Day 25

.gitignore

@@ -1 +1,2 @@
 AoC2021/Bene/
+__pycache__

2023/day12/code.py

@@ -1,16 +1,14 @@
 #!/usr/bin/env python3
 
-import sys, re
+import sys
-from itertools import combinations
-from more_itertools import locate
 
 
 def memo(f):
     memo = {}
 
     def f2(x,y):
-        if (x,y) not in memo: memo[(x,y)] = f(x,y)
+        if (x,tuple(y)) not in memo: memo[(x,tuple(y))] = f(x,tuple(y))
-        return memo[(x,y)]
+        return memo[(x,tuple(y))]
     return f2
 
 
@@ -18,58 +16,35 @@ def fulfills(spring, cond):
     return [len(b) for b in spring.split('.') if len(b) > 0] == cond
 
 
-def solve_row1(spring, cond):
+def dot(spring, cond):
-    if fulfills(spring, cond): return 1
+    if len(spring) == 0 or spring[0] != '#': return solve_r(spring[1:], cond)
-    sols = 0
+    else: return 0
-    not_dam = spring.count('?') + spring.count('#') - sum(cond)
+
-    if not_dam < 1: return 0
+
-    inds = list(locate(spring, lambda x: x == '?'))    
+def hashtag(spring, cond):
-    for c in combinations(inds, not_dam):
+    c = cond[0]
-        rs = list(spring)
+    if len(spring) < c: return 0
-        for i in c:
+    for x in range(c):
-            rs[i] = '.'
+        if spring[x] == '.': return 0
-        if fulfills(''.join(rs),cond): sols += 1
+    return dot(spring[c:], cond[1:])
-    return sols
 
 
 @memo
 def solve_r(spring, cond):
-    if cond == '': return 1
+    cond = [int(c) for c in cond]
-    cond = [int(c) for c in cond.split(',')]
+    if cond == []: return 1 if spring.count('#') == 0 else 0
-    spring = spring.strip('.')
+    if not '?' in spring: return 1 if fulfills(spring, cond) else 0
-    inds = list(locate(spring.strip('.'), lambda x: x == '.'))    
+    if spring == '': return 0
-    if inds == []: return solve_row1(spring, cond)
+    return dot(spring, cond) + hashtag(spring, cond)
-    i = inds[0]
-    sols = 0
-    for j in range(0, len(cond)):
-        if sum(cond[:j]) <= len(list(locate(spring[:i], lambda x: x != '.'))) and sum(cond[j:]) <= len(list(locate(spring[i:], lambda x: x != '.'))):
-            cond1, cond2 = ','.join([str(c) for c in cond[:j]]), ','.join([str(c) for c in cond[j:]])
-            sols += solve_r(spring[:i], cond1) * solve_r(spring[i+1:], cond2)
-    return sols
-
-
-def solve_reg(spring, cond):
-    reg = r'^(\.|\?)*'
-    cond = [int(c) for c in cond.split(',')]
-    for i, z in enumerate(cond):
-        reg += '(\?|\#){' + f'{z}' + '}'
-        if i < (len(cond)-1): reg += '(\.|\?)+'
-    reg += '(\.|\?)*$'
-    print(reg, [i for i in re.findall(reg, spring, overlapped = True)])
-    return sum([1 for i in re.finditer(reg, spring)])
-
 
 
 if __name__ == '__main__':
     springs = [line.strip('\n').split(' ') for line in open(sys.argv[1])]
     res1 = 0
     res2 = 0
-    for s in springs[0:2]:
+    for s in springs:
-        # res1 += solve_row1(*s)
+        res1 += solve_r(s[0], [int(c) for c in s[1].split(',')])
-        res1 += solve_reg(*s)
+        res2 += solve_r('?'.join([s[0]]*5),[int(c) for c in s[1].split(',')*5])
-        # print(solve_row1(*s))
-        # solve_reg('?'.join([s[0]] * 5), ','.join([s[1]] * 5))
-        print(res1, s)
 
     # challenge 1
     res1 = str(res1)

2023/day14/code.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+
+import sys
+from copy import deepcopy
+import numpy as np
+
+
+def show(rocks):
+    st = ''
+    for line in rocks:
+        st += ''.join(line)
+    return st
+
+
+def tilt_north(r):
+    rocks = deepcopy(r)
+    for i in range(0, len(rocks)):
+        for j, rock in enumerate(rocks[i]):
+            if rock == 'O':
+                for a in range(i-1,-1,-1):
+                    if rocks[a][j] == '.':
+                        rocks[a+1][j] = '.'
+                        rocks[a][j] = 'O'
+                    else: break
+    return rocks
+
+
+def cycle(rocks):
+    new = deepcopy(rocks)
+    for _ in range(4):
+        new = tilt_north(new)
+        new = np.rot90(new,3)
+    return new 
+
+
+def load(rocks):
+    res = 0
+    for i, line in enumerate(rocks):
+        res += (len(rocks)-i) * np.count_nonzero(np.array(line) == 'O')
+    return res
+
+
+if __name__ == '__main__':
+    rocks = [list(line.strip('\n')) for line in open(sys.argv[1])]
+
+    # challenge 1
+    tilted = tilt_north(rocks)
+    show(tilted)
+    res1 = load(tilted)
+
+    # challenge 2
+    cycled = cycle(rocks)
+    forms, maps = {}, {}
+    forms[show(cycled)] = 0
+    maps[0] = cycled
+    for i in range(1,1000000000):
+        cycled = cycle(cycled)
+        if show(cycled) in forms.keys():
+            round = forms[show(cycled)]
+            n = round + ((1000000000-round-1)%(i-round))
+            val = maps[n]
+            break
+        forms[show(cycled)] = i
+        maps[i] = cycled
+
+    res1 = str(res1)
+    print(f"challenge 1:\n{res1}\n")
+
+    res2 = str(load(val))
+    print(f"challenge 2:\n{res2}\n")
+

2023/day14/example

@@ -0,0 +1,10 @@
+O....#....
+O.OO#....#
+.....##...
+OO.#O....O
+.O.....O#.
+O.#..O.#.#
+..O..#O..O
+.......O..
+#....###..
+#OO..#....

2023/day14/input

@@ -0,0 +1,100 @@
+#...#..O#.OO...#......#...O.#.O#.O........O#..O#.O.OO..O.......O....##..O#O.........#O....O..O#.....
+OO..O....#.####...#.O..#.....OO.O...O.#OOO.##..O.#.OO.#....O.#....#..#.O#..O#.O...#OO.#....#.O.#...O
+..........O..#..OO.O...##.O........O#O#.#...#O....O.........O.....OO#....O..............#......#...#
+#..O.O.#OO#....O#OO.#.#.O..O#...#.OO#.O#.O......#.....OO...O#.O....O..#.O#..#..O.#.O........#..#..O#
+...#..O#.OO..#O...#..#..O###.........#.....OOOOOO.........#O.O.O#O.O.......O........#.OO....O..#...O
+..OO...O.#.......#.#O....#..O##....O.O..OOO...#O.#..O.#O...#.O..O..#O#.#OO...O.OO..#..O..O.O.O....O#
+.OO#............O.O...#.OO.#..##O......OO...#......##......#.#..#.O..O.O...#..#...O#......O..OOO....
+..........O..#O...O.#....OOO.#........#.##O.#......#..###O...O...O..O.#.O..O.#..O.O.O.O.##.....#.#..
+.##.O#O.........O.#.OOOO..O..O#.#..O.O...O..#......O.O.#O........O..#.#..#OO...#......##O.#O..O.OO..
+.O.O.O##...O...O.........O##O##....#O....O#...OO.O.#..#O....OO...O.O.....##.....#..O#O#.#...O..O..#.
+..OO#.#O.#...............#...#.#.O..#..O.#.#..O.##O..OOO..#O#....##.#.#...#.#.O#.#.O..#.#......#....
+.#...#.#....O..O.#..O.O..O.....##O#..#.##..OO.....OO.OO..OO...O#...O.O...O.OO##.....O..............O
+.....O.....#........#O..#.OO#..O...#O....OO..O.#.OOO.#O.O......#O.#.....#O..O..O#..#.#.#.O..O.#...OO
+#.....#..OO.#....#.##.O.##..O.#.O#.O...O...#O.#.O#..O.#...##....OO#OO......#.O...O.O#.#...O...##.OO#
+O.......O......O..O...#...#..#...##.##..O...O....O.##.#.#OO#.....#.O#...O.##O...O..........#..##.O.O
+..............OO.O##.....#.O......##O#....O.O....O..##.#.............O#...O.#OO...O....#...O..O#..OO
+.#O#...OO...#.#.....O#...O#.O.O#..O..##O.#.#..OO.O.##.#......O..O.O.O...#......OO#.#.#.#.O.OOO#.O.O.
+..#...#..O.........O.O.O..O.........#..#....#.O#..#O...............O##.O##O.O..O#.#....O.#OO.#.#....
+..#.#OO.OO..OO#..#O..O##.....O......OO..O.#..O#.......O..##..##.O.O..O.#O....O.O.......O....O....#.#
+....OOOOO.#.#......#.........#.O.O....O....#.O..O#.....O##..........#..#.....O..O.....O....O.#O.#...
+OOO.O#..#...O#...O.#..OOO.#.....O..#.O#.O.O.O.#O..#...#...#O....O.#..O..#O..O.#O#.OOOO..............
+.#.O#OO#..##...O.#..O.O....#O........#O.....O..O....O.....#...#O.O..........#.......OO#...O..OO.##.O
+OO.....O#.O....O..O.O.#.#O#.......#..##...O.......O...OOO...#...#OO.OO#....O#........OO.OO..OO....##
+..O..#..#.#.O..O...#.#.#.O......O....O...#....#...#O.....O.#.#O.O..O#......OO.O...#.#OO.#...O.O.O..#
+.#.O#.O.....O..OO...O..O..#....O#..O..O#....#......O#O....OO....#...O#O....#........O.O##..O....#...
+#.OOO#..##..O#.#....#.O##..#......O#..OO.....O.....O..OO..#..OO..O..#..#...O.....#.#..O.O.O..#.O...#
+#.O.#..#.....O.....#O.O...##.O....OO...OO.#....O.#.........O.O#.#....#.#......O....O..O....#.O....#O
+.#O...O.O....OO#.....O......#...O#..#.O#.O....#...O.O#..O...O...........#......#.##...OO......OO##..
+........#.#O......#O..#OO....O......#.O.#O#O...O...#O....O...O.........O..OO..##...O.#.#OO#.....##.O
+.#.OOO.....#...#..O#....#.O....OO.O.O..OO..#.O..OOO.#....O.#..#O#O.#...O.#...O......#.O.O#O...O.OO..
+.#..#.O#...O....O....O...#.O..#.O...##.##O.O....O..#.#.#.O..#.O.OO..O...#..O#...##.O.....O...O....#.
+...##...#.##OO.O.O...O...#...##.O..#OOO..#.OO#..O..O....O.O#.#.#O..##.O...O.O..O...O......#.......O.
+.##.#O..#....O........O..O.O..##...#...#O#...O.....O##.#..#.O........O........O##....#....#.O..O...O
+O.#.O..O..#..#O.##O.......O.O...O#.O......OO.O.O....O..#.O...#O.O..#..O....O..#..OO#.#.O#..#.#..#.#.
+...................OO.#O..O...#.O...O...O.O#....#....O.OO.#O.O#.#.O#O.O#.#..O...OOOO..#..O...O.#..#.
+#.....#....#OO..O...O#..#.##....#.#..#.#O..#.O.O....#.#O.........##OOO...OO...O..#.##.O#..O.#....#..
+O..#.##....O##.....O.......O.#...#...#.##.....OO.O..O#.#O.#....#.....#.....#.....O.....#............
+#..#..#...O.#....#......O...#...#.#O.........#O#.#O...O...O...#.#.......#O...............O#....O....
+##.#..OO..OO#...#.OO.....#....O#O...O.O.O.#....#......O...O#..OO.O..#.#...O.#O...O...#........O.O.O#
+O.#...O..#.#.O...#O..O#..O.#..O#O#OOO.......#..#O..#....O#...O.O...O....O.............OO..O..O#.#...
+O##.OO....#..#.....O..O..#..O.#...O..OO.......#...#.#....#...##.#.....#..#..OO#O.#..OO..O#..#..#...O
+#.O.#...#O.#...#.OO.OO..##.#...#.....O#.O#O.OO.........O...O..O.O...#.........O......OO..#..O...#O..
+.....#....O.##..O#..O.....#.O.....O...O.OO#OO.O......O..O..O.....#.#...#.O..#...O.O#.OOO.O.#....O...
+..O...#....O....#.O.O#.#.#.O.OOO........O..OO..O##.....##.....#.O.......#....#.#O.O.#..#.O...#..#..O
+O#...O...##.#.#..O#O#......#.O..#....O...OO.#...#.OOO##..O.O#.#.#..O#OO.OO###.....O..#...#O.#..O....
+O.OO..#...O..O......O.#....O.O##....O.#O.O.O###..O...#..#.....#....O###..#...#O.OOO..O.#O.....#.....
+#O....#....O..O..O#.O.OOO...O.OOO......#....O.##O##O....#.OO..O#..#......O#.........#.#...OO...O....
+.#..OO.....O..#....O..........O..O.O..O.##...O.O.O.#.O.#...#O..#....O.#........#.#..O.##....#O##.#.#
+.OO.......O..O#.O..#OOO.O...#.#.O#.##....#.O..#.#.O.OO......#O##.O...........OO..#.......#...O#.....
+....#......#..........#.#.O..O.....#...O....O.O.OO#.#......O..#.#O..OO..OO#.O#.#O#.O..O.O......#...#
+O.O.O..#O#......O.#O..#####...O.....#.O..#..O.........O...##.#O.....##.....#..#.....O.#...#O.#O#OO.O
+.....O..O#...O..#...O.......O..###O...O..O...OO.O...O..O#OO.....O#.O.#.O......#........O.O.O..OO#.O.
+.O...#.O....O#OO...OO#.#.......OO.....#.#.....#O..#..#.#.#O#..#.O.O.....##.#.#.#...#O...O......O....
+.#..#.OO....O.#..O..O..O...O..........O.#.OO..#..O............O#.O.#.O#...OO...O#.O.O.###.#O.#..O.O.
+..#O...#..#..O....#............O..#.O....#...O...#.....O..##.##OO#....#...O#.O.O....OO#O..##..O...#O
+..OO.#O#....O..#..#..O.#O..O....O.........#.O...#.O....##..#.O........O....O...#.OO..#........O.OOO.
+.O..#.OOO.O.O..O...#O..#..OO.....##....#..#..O.OO#O...#.O...#.....O#..##.##.#.....O..O....O..#O..OO.
+...#.O.#.#.....O...#....O..O..##OO.........O.#..O..O......O#.#....O.O..O..O.......O.#.#..#...##...O.
+..O....##...O...O.#OOOO.O..#.....OO.O.......#O..O..#..O...#....OO....O...##.#....##....O...O...O##.O
+O..O#.....#O...O...#O...#...O.....#......O...#..#O............#.###O.....O.....O.O.#..#OOOO...#O#...
+O.O...OO.##....#....#.#.#O....O.#.#..O..O..O.....OOO#.#.......#.....O...O...O...#..#....OO.#.O.....#
+..#.#.O.O...O..#..O#..O..#..#.OO..##......#OO#....#.O.O.O##..O...O#..#O.........OO.#...OO.O.O.OOO...
+.......O.O..#.......O.O..#.O#..#...O.......O....O....##OOOO..#....#.#....#.....#O#....#.....O..OO.#.
+O..#OO..#.##.......##..O..O.#..O.O##.....OOO#..#....#..O.O..O....#..O.O.....#O..#.OO..O#....#.#.....
+OOO..O.....##....O..#.O.#...O##OOOOO....O.#..O.O#.O..##O.O#OO...O........O.O..O..O..#.O..OOO..#.O.OO
+...O.O.O..OOO..O..#...#..O...##O#OO.OO..O.........O.....O#O.O.O....#..O#.O#..O.O.O.#.#O##O..#.......
+OO....O...OO..#..#OO..#......#.O.OO.O.O.#.......#OO........OO...#..O...##..O.....O...O.O#O.O.O#OO...
+O...O#.OO.....O.O.O...#O.O..O#O........#O.#....#...#.O.#...OOO#..........O.....O...##.....O#O.#.O##.
+...O....#.O......OO......##..O..O.O....##........O.....#....##...##..#........#..##..O....O.O.#..O#O
+..##.O....#.O##.OO#O....#OO#OO....O#.O......##..##.O..OO.O...O....O...OO....#.O..O....O#..#...#....O
+.###....#OOO...#....OOO.#..#....O.O#.......#............O......#...#..##..O#..O..O.##.O...O#....O...
+..##O..#OO#...O....##.O..#...O.....#.O..O.O.....O..#O#O...##.#O.#....#OOO..O....O....#...OOO.#O..##.
+.O.O......#OO.......#.O.....#...OOO.O.O.#.O..#.O..##.O..O..O...O.#O##.O....#......#.O.#......#....O.
+##......O.OO..O#.#O.###O....#...O#......##.......O.OO#O.....O....OO.........#....O.#.O.......O#...#.
+.O.....##..#....#.O.....O.#..OO...#O...#.#...##....O....#OO.#.O.#O.....#O.O.O#O.OO.....#...OO#...O.O
+.O#....OO.OO..O..OO.O....##...#..OO.O....O...O.O..O..O..O..#OO...#O...O...O.OO#...O.O.....#O....O...
+#O......O#....OO###.O...O##...#.........O.....O..##.##....O......O##....#...#..O...O.O.......O...###
+.....O##O..O..####.#O.OO..#..#..OO.#O.....O...O####.#......#..O....O.#.#......OOOOO.O.O...#.##......
+O##.#..#..#.#..#.#....#......OO#...O..O#..OO.#O.....O.........O#..#.......#.....##...#O#.#O..OO.....
+.O..O#O..#.OO.O....O..##O......O.##...O...#.O#.........O...O.O...O.#...OO.........#...#..#OO#.#....#
+........O#....OO.#.O..O...OO#O..OO#OOO.O#.#.#O..#.....O.OO...O...OO.#..O..O....##..O#...OOO.O.##.O..
+..#.O....##O.O.#.#....O.#.O.#...OO.O.....#..O.....O....##.......O#.......O.#..O.#.O#.O.O..##......O.
+#O#O.#...OOOO..OOO.O###....OO....#.O..OOO#..O...#....O.....O..OO.#.O..O###.O...O..#.#...OO...O......
+......O#.O..#.O.......OOOO..#.O........O.#O##.#.#O#O.....O.#O....#...O...OO.O......OO........O.#..#.
+O..#..O..##..O.O....#....#..#O...OOO.OO.#O...#.........O..#..O........O#....O.#O#.#O.OO.......O.....
+..O.OO#..O..O......O...OO...#.....#.....O......O.....O..#....#.....O.O..O#..O.#...#...#O..#..O..O...
+O.#..O.#O.OO.O#..OO...O#O..OO..O...#.O..#O..#...O....OO#..OO.....OOOO...#O...O#O..OO.........#......
+....O.O#.#......O.O#....O#.......#....#.#.#O.#O...O#O.#..#.#.OO........O.#.#O....O#.......#..OO#O.O.
+...O...O..###..#......#.#.O..O....OO##..##OO.......O...O#..OO#OO..#..O........O...#.#.#O.....#O#OOOO
+...O..O.O#.O.#......O.#OO..OO.O....O.O....#.#O#.O.....O.....O..O.#.OO.....O...O.......O....O.#....O.
+#..O....O.O.O#..O..#..........#O...##..OO.#.O.O#O...#..O...#.......O.........O....O#O#O.O.O.#.OO.OO#
+O...#.....O..O#.#O...O...O.##..#O..#.##.O...O##.#O...O..O..O#....#.O..#O##..#...O.O.O..##..OO.O....O
+#.....#.O....O......OO...OO.#.O..O#..O.O#O......#O...#.#..O.#...#.O.#..#..#....O.O....OOO#..O.......
+#....#...O#.....O..O.#...O.O..O#..#.O.O.#...#.O..O#.......O......O..O....O....##OO.#O....##.OO....#.
+O...O.O..#..O#..#O.....#.#.O#O.O......#OOO...OO........O#.O.....#..#.#..#.O.#....#.......OO.#....#O.
+OO.##.#O...#.O.....O..#.#...#OO......##O......O..###...#.......O#.OO..O...#.#.....O.O......O##......
+#.O....OO.O.OO.....OO..O...........O..O..#OO#...O#....OO.O.......#.#.OO..OO.OO.#.O...O.#O.O........#
+..##...O.O.O.O.O...OO.O...O..O.#.#......O.#.#.O.....#.O...O#..O.##O...#....O..#...O.OO.........O#.#.
+.....OOO#O#OO.O...#......#.O..##OOO#.#.#O.O.#O..#O..O..##O.#.#.....#.....#.#...OO.......O#...O....O#
+O..##.##...O...O.O#..#....O..O.....O#O#O#O#O....#.O.#O..#....O.O...O..O.#...O.OO..O..O.O#..#O##.#O.O

2023/day15/challenge

@@ -0,0 +1,165 @@
+--- Day 15: Lens Library ---
+
+The newly-focused parabolic reflector dish is sending all of the collected light to a point on the side of yet another mountain - the largest mountain on Lava Island. As you approach the mountain, you find that the light is being collected by the wall of a large facility embedded in the mountainside.
+
+You find a door under a large sign that says "Lava Production Facility" and next to a smaller sign that says "Danger - Personal Protective Equipment required beyond this point".
+
+As you step inside, you are immediately greeted by a somewhat panicked reindeer wearing goggles and a loose-fitting hard hat. The reindeer leads you to a shelf of goggles and hard hats (you quickly find some that fit) and then further into the facility. At one point, you pass a button with a faint snout mark and the label "PUSH FOR HELP". No wonder you were loaded into that trebuchet so quickly!
+
+You pass through a final set of doors surrounded with even more warning signs and into what must be the room that collects all of the light from outside. As you admire the large assortment of lenses available to further focus the light, the reindeer brings you a book titled "Initialization Manual".
+
+"Hello!", the book cheerfully begins, apparently unaware of the concerned reindeer reading over your shoulder. "This procedure will let you bring the Lava Production Facility online - all without burning or melting anything unintended!"
+
+"Before you begin, please be prepared to use the Holiday ASCII String Helper algorithm (appendix 1A)." You turn to appendix 1A. The reindeer leans closer with interest.
+
+The HASH algorithm is a way to turn any string of characters into a single number in the range 0 to 255. To run the HASH algorithm on a string, start with a current value of 0. Then, for each character in the string starting from the beginning:
+
+    Determine the ASCII code for the current character of the string.
+    Increase the current value by the ASCII code you just determined.
+    Set the current value to itself multiplied by 17.
+    Set the current value to the remainder of dividing itself by 256.
+
+After following these steps for each character in the string in order, the current value is the output of the HASH algorithm.
+
+So, to find the result of running the HASH algorithm on the string HASH:
+
+    The current value starts at 0.
+    The first character is H; its ASCII code is 72.
+    The current value increases to 72.
+    The current value is multiplied by 17 to become 1224.
+    The current value becomes 200 (the remainder of 1224 divided by 256).
+    The next character is A; its ASCII code is 65.
+    The current value increases to 265.
+    The current value is multiplied by 17 to become 4505.
+    The current value becomes 153 (the remainder of 4505 divided by 256).
+    The next character is S; its ASCII code is 83.
+    The current value increases to 236.
+    The current value is multiplied by 17 to become 4012.
+    The current value becomes 172 (the remainder of 4012 divided by 256).
+    The next character is H; its ASCII code is 72.
+    The current value increases to 244.
+    The current value is multiplied by 17 to become 4148.
+    The current value becomes 52 (the remainder of 4148 divided by 256).
+
+So, the result of running the HASH algorithm on the string HASH is 52.
+
+The initialization sequence (your puzzle input) is a comma-separated list of steps to start the Lava Production Facility. Ignore newline characters when parsing the initialization sequence. To verify that your HASH algorithm is working, the book offers the sum of the result of running the HASH algorithm on each step in the initialization sequence.
+
+For example:
+
+rn=1,cm-,qp=3,cm=2,qp-,pc=4,ot=9,ab=5,pc-,pc=6,ot=7
+
+This initialization sequence specifies 11 individual steps; the result of running the HASH algorithm on each of the steps is as follows:
+
+    rn=1 becomes 30.
+    cm- becomes 253.
+    qp=3 becomes 97.
+    cm=2 becomes 47.
+    qp- becomes 14.
+    pc=4 becomes 180.
+    ot=9 becomes 9.
+    ab=5 becomes 197.
+    pc- becomes 48.
+    pc=6 becomes 214.
+    ot=7 becomes 231.
+
+In this example, the sum of these results is 1320. Unfortunately, the reindeer has stolen the page containing the expected verification number and is currently running around the facility with it excitedly.
+
+Run the HASH algorithm on each step in the initialization sequence. What is the sum of the results? (The initialization sequence is one long line; be careful when copy-pasting it.)
+
+Your puzzle answer was 511257.
+--- Part Two ---
+
+You convince the reindeer to bring you the page; the page confirms that your HASH algorithm is working.
+
+The book goes on to describe a series of 256 boxes numbered 0 through 255. The boxes are arranged in a line starting from the point where light enters the facility. The boxes have holes that allow light to pass from one box to the next all the way down the line.
+
+      +-----+  +-----+         +-----+
+Light | Box |  | Box |   ...   | Box |
+----------------------------------------->
+      |  0  |  |  1  |   ...   | 255 |
+      +-----+  +-----+         +-----+
+
+Inside each box, there are several lens slots that will keep a lens correctly positioned to focus light passing through the box. The side of each box has a panel that opens to allow you to insert or remove lenses as necessary.
+
+Along the wall running parallel to the boxes is a large library containing lenses organized by focal length ranging from 1 through 9. The reindeer also brings you a small handheld label printer.
+
+The book goes on to explain how to perform each step in the initialization sequence, a process it calls the Holiday ASCII String Helper Manual Arrangement Procedure, or HASHMAP for short.
+
+Each step begins with a sequence of letters that indicate the label of the lens on which the step operates. The result of running the HASH algorithm on the label indicates the correct box for that step.
+
+The label will be immediately followed by a character that indicates the operation to perform: either an equals sign (=) or a dash (-).
+
+If the operation character is a dash (-), go to the relevant box and remove the lens with the given label if it is present in the box. Then, move any remaining lenses as far forward in the box as they can go without changing their order, filling any space made by removing the indicated lens. (If no lens in that box has the given label, nothing happens.)
+
+If the operation character is an equals sign (=), it will be followed by a number indicating the focal length of the lens that needs to go into the relevant box; be sure to use the label maker to mark the lens with the label given in the beginning of the step so you can find it later. There are two possible situations:
+
+    If there is already a lens in the box with the same label, replace the old lens with the new lens: remove the old lens and put the new lens in its place, not moving any other lenses in the box.
+    If there is not already a lens in the box with the same label, add the lens to the box immediately behind any lenses already in the box. Don't move any of the other lenses when you do this. If there aren't any lenses in the box, the new lens goes all the way to the front of the box.
+
+Here is the contents of every box after each step in the example initialization sequence above:
+
+After "rn=1":
+Box 0: [rn 1]
+
+After "cm-":
+Box 0: [rn 1]
+
+After "qp=3":
+Box 0: [rn 1]
+Box 1: [qp 3]
+
+After "cm=2":
+Box 0: [rn 1] [cm 2]
+Box 1: [qp 3]
+
+After "qp-":
+Box 0: [rn 1] [cm 2]
+
+After "pc=4":
+Box 0: [rn 1] [cm 2]
+Box 3: [pc 4]
+
+After "ot=9":
+Box 0: [rn 1] [cm 2]
+Box 3: [pc 4] [ot 9]
+
+After "ab=5":
+Box 0: [rn 1] [cm 2]
+Box 3: [pc 4] [ot 9] [ab 5]
+
+After "pc-":
+Box 0: [rn 1] [cm 2]
+Box 3: [ot 9] [ab 5]
+
+After "pc=6":
+Box 0: [rn 1] [cm 2]
+Box 3: [ot 9] [ab 5] [pc 6]
+
+After "ot=7":
+Box 0: [rn 1] [cm 2]
+Box 3: [ot 7] [ab 5] [pc 6]
+
+All 256 boxes are always present; only the boxes that contain any lenses are shown here. Within each box, lenses are listed from front to back; each lens is shown as its label and focal length in square brackets.
+
+To confirm that all of the lenses are installed correctly, add up the focusing power of all of the lenses. The focusing power of a single lens is the result of multiplying together:
+
+    One plus the box number of the lens in question.
+    The slot number of the lens within the box: 1 for the first lens, 2 for the second lens, and so on.
+    The focal length of the lens.
+
+At the end of the above example, the focusing power of each lens is as follows:
+
+    rn: 1 (box 0) * 1 (first slot) * 1 (focal length) = 1
+    cm: 1 (box 0) * 2 (second slot) * 2 (focal length) = 4
+    ot: 4 (box 3) * 1 (first slot) * 7 (focal length) = 28
+    ab: 4 (box 3) * 2 (second slot) * 5 (focal length) = 40
+    pc: 4 (box 3) * 3 (third slot) * 6 (focal length) = 72
+
+So, the above example ends up with a total focusing power of 145.
+
+With the help of an over-enthusiastic reindeer in a hard hat, follow the initialization sequence. What is the focusing power of the resulting lens configuration?
+
+Your puzzle answer was 239484.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2023/day15/code.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+
+import sys, re
+
+
+def HASH(string):
+    res = 0
+    for a in string:
+        res += ord(a)
+        res = res * 17 % 256
+    return res
+
+
+if __name__ == '__main__':
+    instr = open(sys.argv[1]).read().strip('\n').split(',')
+
+    # challenge 1
+    res1 = sum([HASH(a) for a in instr])
+    
+    boxes = {}
+    for i in instr:
+        label, op, focus = re.findall(r'(\w+)(\-|\=)(\d*)', i)[0]
+        box = HASH(label)
+        if not box in boxes.keys(): boxes[box] = []
+        present = boxes[box]
+        if op == '=':
+            for i, lens in enumerate(present):
+                if lens[0] == label: present[i] = (label, int(focus)) 
+            if not (label, int(focus)) in present: present.append((label, int(focus)))
+        elif op == '-':
+            for i, lens in enumerate(present):
+                if lens[0] == label:
+                    present.remove(lens)
+                    break
+
+    res2 = 0
+    for b, lenses in boxes.items():
+        for i,l in enumerate(lenses):
+            res2 += (b+1) * (i+1) * l[1]
+
+    res1 = str(res1)
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    res2 = str(res2)
+    print(f"challenge 2:\n{res2}\n")
+

2023/day15/example

@@ -0,0 +1 @@
+rn=1,cm-,qp=3,cm=2,qp-,pc=4,ot=9,ab=5,pc-,pc=6,ot=7

2023/day15/input

@@ -0,0 +1 @@
+fzl-,tcjp=8,vkjr=9,xs-,jktcpk=3,gzp-,kfsxsd-,zxkv=7,fxz-,pj=7,mhbdch=7,xlss-,smk-,ppz-,kqggd-,dqh=7,gmv=6,tjjfm=2,gbv=5,gn-,ld=7,jdr-,phq=3,rd-,qz=3,sh-,gzsb=2,glrt=7,vjkrjg-,gjqmpc=7,qnx=7,mf=1,tnrm-,lppg-,gnvx=1,rv-,vnt-,bst-,gkb-,tl=1,bggff-,lm=8,mqq=7,hr-,gkb-,fspkn=2,tjjfm-,shshb=3,qfczq-,zk-,zcsc-,lnrjh=2,fz-,bkb-,rg-,bcfzn=6,xsbb=5,sm=3,rqs-,rvlv=9,pvh=9,rl-,zrb=9,lftk=1,cdn-,zp=8,hc-,mf-,hp-,zk-,dbj=5,tm=9,zx-,gmp=4,gcq-,mxq-,lvh-,lkhb-,vn=9,gzsb=6,xlss=9,drkhc=8,rgqg=1,hkr-,fxz=7,xsm-,fvmf=4,hsm=7,dlrss=9,rv-,kj-,ndtc-,zjf-,zj=9,kv=5,sxvv-,hj-,mltm-,qggz-,mntr-,td=5,lppg=1,xqb-,brt-,nm-,vlp=7,zcjnv=6,chh-,dd=2,fh-,hxfkx=6,hj=6,rzk=7,skpq-,rxb=1,fn=1,nc=1,vqq-,ndq-,xtgd=6,qlgv-,dl-,xln-,rqs=5,vpmmf=1,llvv-,hzp=6,dnbql=3,rqz=5,nfhb=7,vdb-,gmp-,hskv-,xs-,vk-,xll-,ng=2,xb-,mjjph-,tss-,lsd-,qsj-,tbdb-,tdnm=6,bv-,qz=5,zp=8,jn-,fh-,dqh=1,rgrd=5,kqggd-,ddccc-,gdx=3,br-,cnb=4,tfx-,scp=5,rgch-,xltvn=4,xdblmh-,jdr-,fz-,crd-,hfr-,xlss=2,fxz=5,rzl-,vdb-,tss=6,kc=2,bdmrg=6,mkv-,hdr=9,pv-,qcr=4,ntxqq-,mhbdch=8,npghs-,jb-,lzcp=1,zbl-,vsjs-,dmv=1,zhc-,tfx-,jc=8,vlhhb-,zcbg=2,fcbzpl=8,gkb-,zppn-,jj=6,xlc=6,xltvn-,cnb-,lftk-,ptmc-,fxz=6,ncn-,gzp-,lgtd=4,znp-,ncn=8,fg-,lnrjh=6,lkhb-,tnrm=4,hkr-,ltc-,lv-,ck-,dn=5,srt-,hk-,fspkn=9,drnvhj=5,gvf-,gzp-,pq-,lbq=8,lm-,lsx-,jf-,vkjr-,lcvzfp-,vqqp-,glrt=7,zx=4,hskv=9,bqm=6,jm=6,tshhq=7,sg-,pq-,rgqg=4,bcpb-,df=4,qpqx=6,fn=7,drnvhj=5,vf=8,zsx-,jbd-,kczn=9,fspkn=1,cjd=5,hzp=1,zpkc-,kczn=7,mrd=9,ndq-,hp=4,nfmf-,npghs-,zvd=9,dt=2,jdf=2,xzq-,xb=7,cpbb-,nd-,sgq=2,fc=1,tdnm-,fvmf-,ncn=4,zrdk=1,bvb-,gmp=2,pvh=2,klzj=7,lqlh-,tgm-,vf-,xll=3,lcvzfp=4,jrp=1,jq-,cjd-,nxqhqd=9,lx=4,ltc-,kc=9,gddghs=4,lj=9,bggff=8,pxk-,glgpxh-,mrd=6,mhkbd=1,lbq-,rgch-,vf-,ks=8,dt=5,tb=2,cdn=3,vlxv=6,rgrd-,mcfh=9,bkg-,fd-,bdz=4,vk=7,phd=4,bkg-,krz=6,flk=1,jf=8,zxkv=2,hdhk-,nxqhqd-,dvgz=7,dbj-,rvc-,fshfd=7,tb=4,mjx-,vnsgg=1,zppn=6,zx-,kk=2,xs-,xprp=7,hh=9,xnp=8,vndj=9,qnzlf=3,bdmrg-,dxl=5,ss=4,clv-,hk=3,kgx-,qqvmc=9,xzq-,kfsxsd-,bdt-,vqq-,lqlh-,jvp=7,tshhq=5,pvh=4,cp=4,bpd-,bqql-,dvx=8,qtql=7,zxkv=3,qfv-,xlss-,lzs-,kt=3,ltsb-,pfs=2,dmv-,qcr-,sl-,qsjch-,hmd-,bcpb-,drnvhj=4,bf=3,qx=1,gddghs-,zcjnv-,bdmrg-,rd-,ddccc=2,hvk=6,kk=1,chh=5,mxq=9,kcq-,vkjr-,ntxqq-,glgpxh=6,dvzlc-,lnt=2,rkk-,mzpgh=7,pl-,vndj-,nc-,xx=5,klzj=2,xhs-,cx-,jz=7,rmh=7,gjqmpc-,zdr=4,csqh-,zppn-,zc-,bvb=4,tjjfm-,rdzzjm=8,dbj-,sr=4,npghs=1,pxs-,blxq-,rqz=1,grxx-,sg-,fqmdgn-,jf-,pqjf-,xzljl=9,zdr-,hh-,cnb=5,jrq=1,dvx=2,pzbsd-,xpm=5,znp-,gqsr=2,qtql-,kssg=4,qm=3,scd=1,lzcp=4,gdx=9,shshb=2,sxmq=2,mtqb-,xn-,xln=4,vv-,nj-,tjjfm=7,rp=5,kcq=3,bcfzn-,dbj=9,zcbg-,bfx-,gvf=2,ptmc=7,jb=7,kv-,znl=5,gsk-,zjf=8,kmx-,rbft=1,csqh-,zp-,rq=1,rrx=9,mh=2,gnvx=9,mqq=9,bqql=6,gj=2,mhv=3,dcc-,kgx-,vhrd=6,ztj=2,ng-,rl-,bqm=1,rgqg=6,blmgvg=5,jx-,vqqp=8,jb-,lnk=2,rvlv=9,tz-,hj-,ltc=7,gcjgs=7,tm=2,mn=4,ss=7,vlhhb=4,hkd-,xf-,ltsb-,rzl=7,zx=5,phq=8,srt-,jvp=5,sgq-,qnzlf=9,lsd-,fbrz-,dsnd=3,hj-,tcjp-,vnsgg=9,xn-,mzpgh-,sxvv-,gjqmpc-,ncn-,mqq=2,tmpd-,rkk=6,qrlrxg-,csnq-,ltsb=6,pq-,mjx=6,bkc-,bvb-,kgpnf=2,xv=7,cjd=6,hp=3,vf-,pg-,jnq=2,tnng=7,qq-,dxl=5,nfpqv-,rg=9,dmv-,gd-,rgch-,nfpqv=9,gjqmpc=6,sgq-,cjd-,qnn-,ztj-,gn-,jqhg-,pzbsd-,qjn-,gggk=6,mntr=8,sxvv=3,jtx-,krz-,lzs-,pvh-,rrx=1,kgpnf-,bkg-,krz=4,vpmmf=8,rm=5,jr-,lx-,hbsv=1,pq=4,txs=9,mltm=3,sr=1,hr=8,dqh-,rm-,vdb=8,hdhk-,fzx-,xpm=1,hkr=1,qx=3,xn=1,zjf-,bpd=7,vxb=4,mcfh-,dcc=7,sgq-,vpmmf-,zcsc-,gggk=2,hr-,sgq-,tmpd-,rbft-,xm-,pqjf=6,vnt-,hmd-,vg-,sv-,bqm-,dsnd=2,hbq-,zc-,fxjc-,vsjs-,xv-,jqhg=2,bqm=6,qtz-,rxb-,mjx=3,br=8,hp-,bf=8,hbq-,lnrjh=3,xb=9,cdf=4,pm-,xlc-,tm=8,jrq=1,hq-,kqggd-,dhh-,tf-,nxqhqd-,qpqx=9,vpmmf=8,kgx-,glgpxh=2,rzl=1,qtz-,rl=5,sb=5,lfz-,bcpb-,xsdlmd=8,fshfd-,vlkx-,ss=3,xs=2,mn=5,dl-,lzcp=8,bqql=3,nd=4,lsx-,znl-,ltc=1,qggz-,zrb-,tbdb=4,drkhc=7,dkvqm-,tz-,hvk-,ld=5,mjx-,bl=5,qx=2,zppn=7,rgrd=1,bpd=7,bdmrg-,rl-,rqz=7,kc=1,gzp-,kcx=6,kmx-,rxptm=4,rrn=4,mhv=4,zjf-,blmgvg-,csnq-,ttgzdn-,ptmc=6,jq-,rxptm=8,mtqb=5,bpt=7,pxs-,cx=7,cz-,mn-,qfv=5,kgv=2,xv-,blmgvg-,cp=4,hq-,vlp-,xnp-,hh-,lbrn-,crd=3,jc=2,sr=9,vkxm-,mtqb-,sf=3,sv-,hfdzfc-,gbv=3,xsdlmd=9,nst=2,kf-,vn=4,nfhb=8,gkb-,rvlv-,drqq=5,kx=9,hp=8,dh=3,hbq-,pfxqhx=9,zx=9,jc-,zjttq-,vc-,lnk=6,tnrm=8,nxz=1,lcvzfp-,dnbql=6,xs-,tshhq-,kgv-,dvgz-,zhg=8,ksm-,kt=4,jqhg=8,xpllk-,fspkn=6,fc=3,rbft-,scp=5,hk-,hbsv-,drqq=8,kv=6,zlt=6,sxmq=8,qz=9,brt-,smr-,zsx=2,jvp-,vxcfp-,sf-,zhg=1,rmh=8,ztj=9,tb-,jdf-,xb=6,fvmf=5,vqq-,lm-,rlx-,zjttq-,lzcp-,fd-,vkjr=7,hj-,qnn=1,rv-,tb=9,sfrd=7,dhh-,smk=3,xb-,glms=3,jgmsl-,xzq-,mmx=8,zcbg-,pxs=8,cz-,ksm-,skpq-,rrn-,td-,hfr=4,pq-,vt-,krz-,crd-,dnbql=2,mmx=3,rq-,tgm-,fbrz=7,xm-,rv=1,sv-,nfmf-,pptj=7,kgpnf-,cnd=1,vdb-,sb-,pzbsd-,pqc=3,mf=3,rm=7,cjd-,tnng-,mcfh-,fvmf=5,qsjch=5,dt-,hmd=2,hkd-,hvhd=7,nm=3,mpd-,gsk=1,cbnq=2,sl=8,zhc=8,xnp=7,jrq=8,xzljl=1,ht-,tcjp=4,jgmsl=6,vn-,fqmdgn-,xln=4,tfx-,kfjgqb-,pv=3,dz=5,dj-,bpd=9,rqz=1,cc-,nxqhqd-,kkz=4,drqq=8,rzk=9,skk-,tz=4,nfpqv=4,kfsxsd-,pxk-,hk-,nxqhqd=7,rdzzjm=3,dz-,xx=5,sb=6,phd-,cnk-,zqvb-,rzl-,hxfkx=9,llb=3,sr-,gsk=7,bfx-,dmv-,qm-,lf-,jrq=3,hp=2,scp=7,mcfh=7,lnrjh=8,fvmf=2,hvk-,sv-,drnvhj-,jbd=2,hdLine truncated

2023/day16/code.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+ENERGY = []
+
+
+# direction given as tuple, e.g., (1,0) for right
+def move_beam(x,y,d,grid):
+    while True:
+        if (x > len(grid[0])-1) or (x < 0) or (y > len(grid)-1) or (y < 0): break
+        if d in ENERGY[x+y*len(grid[0])]: break
+        ENERGY[x+y*len(grid[0])].append(d)
+        tile = grid[y][x]
+        if tile == '.':
+            x, y = x+d[0], y+d[1]
+        elif (tile == '-' and d[1] == 0) or (tile == '|' and d[0] == 0):
+            x,y = x+d[0], y+d[1]
+        elif tile == '\\':
+            d = (d[1],d[0])
+            x,y = x+d[0], y+d[1]
+        elif tile == '/':
+            d = (-d[1],-d[0])
+            x,y = x+d[0], y+d[1]
+        elif tile == '-':
+            move_beam(x-1, y, (-1,0), grid)
+            move_beam(x+1, y, (1,0), grid)
+        elif tile == '|':
+            move_beam(x, y-1, (0,-1), grid)
+            move_beam(x, y+1, (0,1), grid)
+
+
+def energize(x,y,d,grid):
+    global ENERGY
+    ENERGY = []
+    for i in range(len(grid) * len(grid[0])):
+        ENERGY.append([])
+    move_beam(x,y,d,grid)
+    return len(ENERGY) - ENERGY.count([])
+
+
+if __name__ == '__main__':
+    grid = [list(line.strip('\n')) for line in open(sys.argv[1])]
+    res2 = 0
+    for i in range(len(grid)):
+        res2 = max(energize(0,i,(1,0),grid),res2)
+    for i in range(len(grid[0])):
+        res2 = max(energize(i,0,(0,1),grid),res2)
+    for i in range(len(grid)):
+        res2 = max(energize(len(grid)-1,i,(-1,0),grid),res2)
+    for i in range(len(grid[0])):
+        res2 = max(energize(i,len(grid[0])-1,(0,-1),grid),res2)
+
+    # challenge 1
+    res1 = str(energize(0,0,(1,0),grid))
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    res2 = str(res2)
+    print(f"challenge 2:\n{res2}\n")
+ 

2023/day16/example

@@ -0,0 +1,10 @@
+.|...\....
+|.-.\.....
+.....|-...
+........|.
+..........
+.........\
+..../.\\..
+.-.-/..|..
+.|....-|.\
+..//.|....

2023/day16/input

@@ -0,0 +1,110 @@
+\.................-....-.-.|....................|......./.|.\................|...........|....--..............
+............-...................|.............|..-.......-/..............-....\...............................
+|.......//...........................................|...............-......../.....\....................\....
+....|......-.-.............-......\.....\......../..................../.......................................
+..\..\../................../.............-............|....-.........................|......|...............|.
+-..|........................./.................\.........\./.............\..|..-...-.............\............
+.\......||-..................../................-................./....|........................|.............
+..............\./...........-.........../-................-.........\...\........../-.......|.................
+....-..........-.-.....\......................../.......-..........-/.....................||................|.
+./..........|/............................\./............................./....../........\...-|............\-
+........\.............................-...../............---...........|...............|......\\..............
+........//....|.\......./...\.............|..............\............./...........-.|..-.............|.......
+...................\...........-/..-......\...|........-.|................\-.......|........\.................
+|.|....../|............\./..-........\..............................-.....................|....../............
+............-....................-..............-..-................|.//.............-.............-..........
+..........-.......-......|-................./........../...\........-.......................-..\.......\......
+................../....|............-....../................./.....................|.................-........
+...\..............--..|.....||.....\.............\../................................................-.-...../
+.........-......|....-.................-.......\-................./..|...................|\.....\.....|.|-....
+......................-......................-............/....................\...../...\..../...............
+...../......-...............\...-....|......../.........\................................|.........../........
+........../.......\..............-...............\........-|....-......-.............|...........|........./..
+./...............\....../....../..../...................................................|.....|.|../......./..
+....|\........\-...../...................-.............\.\..................................././..........\...
+....................................-..../......................-..///......-...|.|..........................|
+.........-\.....-...........|........./..........-..\.....\./...................-........................-....
+....../.......././......--.....|.\..-...-....\..........................-....-...-..|.|.....|.......\-./......
+...-....................-................|.............-../........|../........-.............|\...............
+...../...........-......../................|................|.....\.....-.............../...|....../\.........
+./...\.....\..-./.........................|................................-....................-.............
+.............\|.../....\\.....\..|...........\.....................|......|.|.....|.....-............\.\......
+........................|......-..........-.../......-........|...../.\|...-................................|.
+.......\...-...\..........|.....\...................\.........|..........-/.........\...................../...
+.-|.......|............./..|./....-.../...\............-......../..............-.......//...-...........||.\..
+..|..\./..-........\..|....-..\.........../..............................|..\..................../..|...../-..
+.|.........-.\...........................\..../......./....||............\..........|............-.\|.........
+....................\..../|............................\.../..|........./...../............||........\....../.
+....................../.....|...................|......|.................|..|.......|................|........
+.....................\.........-..../.........../../..-......\.................|.../....................../...
+........\.-................/........\...../....../.|.\...|/../..........................................-.....
+....................................|......./...../............-................-/..|.-....................\..
+..|.........................-....................../...|.....|.............../.........../.....|\.............
+.......................................|.\.|.......................-.......|..............\............-./....
+..........//................\..|./................-.................-..../../|................................
+.|......................................./............/..-.......-.|.........................\|..|............
+............................/.-..................-./..../..............|-.........-|..........................
+.................-...|................\.........|\...............................\...........\...//...........
+........\..|.|--.............|.......\.................|......|\./.........................\.|................
+.-|.............|\|.....\|././...|..\.............\..\...................\...........\...../..................
+..../..............-..|...|.........-.........\.....-...........-.....|...\.-....-../.................\.......
+........\.|........\\.........-...............-.......-..................................../..........|.......
+...............-...................\/...............\..-\...........|.-........-.\-.....\....\..../......-....
+.../-......./..............|.......|..//......-....................../.|....\......|..\.........../-\.........
+.-....|./....-.../....../.....-..............\..-..\..-............\................|...|..........-.......|..
+|......../...................\..../....\......./..|.................\...............\.........\../.|......../.
+../............/........|..|.......................................\../\...............\............/.......\.
+........-.-...\........../.......-....-............./.............-......./................\..........-.......
+.../-................/......|/........-......|..........|..-..............|/..........................-.......
+......./............../...................|../...../................./../..........\../.....\....\............
+..............-..|../-........................|...\.../...-/..........\.......\......\.................-....-.
+......................................-/.\........................../......-..\..\........\...............|..\
+.............-.........../-|........-........\....-.....\....../..\........................\......|.......\...
+.././....................|\.../\.........\.|.............../..../...|......./.\...|.......\.........|.........
+......................./........./-./...........................|/...\........-.../.................||........
+..............|./........\..............\.............................|/................../............|.-..|.
+.........................-......../........./.....|....-..-.-..............-.-......../.......\...\./.........
+.-............../../....\//......../...|......|......\..................-......\.....-....\|.........|........
+..............-.....................\.................\.|...-............................|......\.............
+\\.....|...........\............|............................../............................................\.
+.-........../|...\..............-...............................\...........\.....|......\..........\.........
+.\............\.|....-........./....../../.....-..\........|...............-..................|............-.|
+.....\......-.........-.........|....../..-....|.....\..../....|........-.....................................
+..........\-..-..../\.....................\.........-...........|..../-.......................\....-..........
+...../............./..|..................../............../../.........|...............-../...................
+.....|...../.....|......-.............................|...........-......................./............/......
+.....................||./.-.................-.........\.\..................-..............\...--.........\....
+.|......-......-.\.......-......\....\..\..|.........../......./.....................-..........|.............
+.....\.....\............................--..................|..-........\....\...\.|.\.-...........\...\......
+./...........\.......\/......|........./..|................\-................/....\...................\.\.....
+..|...............................-.........-.|/......|.....|........\........................................
+.......|............-............../............-......../..-...\|-...-..../...........-..........-..-/.......
+............................-..\.......................................-.........................\..........-.
+........................\.........|................||...-....\......\.....\.................\...\\....../.....
+....\../.....-.......-.................-|...................-../.|-............|........-|......./../...\.....
+..................................................\.......|......./..\./......../....|....-|.-................
+....../.........|.......|...|.......\.../|...............-.......-\..\......././..................|..\.|...../
+............|.....\...........-.............................../.....-.................-.../............/.../..
+...../.......\............................|.....\....\................/..................\......../...........
+..................-....\.........\|................/|......../.-................|...\......................--.
+......-..-.....................................-\.........|.../.....................|..|.-.....\...|....\....-
+......-......-.................-......|..................................................|....................
+..\...............|......../........-......./.............../...........-..........|/.....///\.....-..........
+.........../..|.............../..........\|.........................\...|.....\||....\...|.|/.....-....../....
+...../...../.....-............................................|........|............|.........................
+......-../\................../..............\............\.................../|...........|.............\.....
+...........-..........................-....\..\..|.-..............................................\........|..
+/.--..//....\...............................-............|..././..............................................
+/...............|.........../..../......................\.....|............|...........|...................-..
+..-................\../|......../...................../...........\..|.|\../..................................
+....|...../.....-......\.........................-.....//...............|.........-.......|...-....--.........
+....|..\.-..../....................|..........\............./...........\.../.................................
+............................\...................................../.......................|...........\.......
+.........../.....-.....................\..\.-..|............-...............\.........................-.......
+......-.......-\.\......\..-.-........./...........\..........|........................\.....-.....\..........
+..............-....../.-............./........../..............\-....-.../...../.-............\......./.-.....
+......|...................................................||..../...|\.....................-.../...\........|.
+......|.//........................-...../...........-..\...|......|..................../........../...........
+.....................................................|.........//...........|\.....\....................|.../.
+............-..||...........|....../....................\...\................................../.......|......
+..\....\......./-\.\...........-\................|.........../................||.../.....-...........\........

2024/day01/challenge

@@ -0,0 +1,78 @@
+--- Day 1: Historian Hysteria ---
+
+The Chief Historian is always present for the big Christmas sleigh launch, but nobody has seen him in months! Last anyone heard, he was visiting locations that are historically significant to the North Pole; a group of Senior Historians has asked you to accompany them as they check the places they think he was most likely to visit.
+
+As each location is checked, they will mark it on their list with a star. They figure the Chief Historian must be in one of the first fifty places they'll look, so in order to save Christmas, you need to help them get fifty stars on their list before Santa takes off on December 25th.
+
+Collect stars by solving puzzles. Two puzzles will be made available on each day in the Advent calendar; the second puzzle is unlocked when you complete the first. Each puzzle grants one star. Good luck!
+
+You haven't even left yet and the group of Elvish Senior Historians has already hit a problem: their list of locations to check is currently empty. Eventually, someone decides that the best place to check first would be the Chief Historian's office.
+
+Upon pouring into the office, everyone confirms that the Chief Historian is indeed nowhere to be found. Instead, the Elves discover an assortment of notes and lists of historically significant locations! This seems to be the planning the Chief Historian was doing before he left. Perhaps these notes can be used to determine which locations to search?
+
+Throughout the Chief's office, the historically significant locations are listed not by name but by a unique number called the location ID. To make sure they don't miss anything, The Historians split into two groups, each searching the office and trying to create their own complete list of location IDs.
+
+There's just one problem: by holding the two lists up side by side (your puzzle input), it quickly becomes clear that the lists aren't very similar. Maybe you can help The Historians reconcile their lists?
+
+For example:
+
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3
+
+Maybe the lists are only off by a small amount! To find out, pair up the numbers and measure how far apart they are. Pair up the smallest number in the left list with the smallest number in the right list, then the second-smallest left number with the second-smallest right number, and so on.
+
+Within each pair, figure out how far apart the two numbers are; you'll need to add up all of those distances. For example, if you pair up a 3 from the left list with a 7 from the right list, the distance apart is 4; if you pair up a 9 with a 3, the distance apart is 6.
+
+In the example list above, the pairs and distances would be as follows:
+
+    The smallest number in the left list is 1, and the smallest number in the right list is 3. The distance between them is 2.
+    The second-smallest number in the left list is 2, and the second-smallest number in the right list is another 3. The distance between them is 1.
+    The third-smallest number in both lists is 3, so the distance between them is 0.
+    The next numbers to pair up are 3 and 4, a distance of 1.
+    The fifth-smallest numbers in each list are 3 and 5, a distance of 2.
+    Finally, the largest number in the left list is 4, while the largest number in the right list is 9; these are a distance 5 apart.
+
+To find the total distance between the left list and the right list, add up the distances between all of the pairs you found. In the example above, this is 2 + 1 + 0 + 1 + 2 + 5, a total distance of 11!
+
+Your actual left and right lists contain many location IDs. What is the total distance between your lists?
+
+Your puzzle answer was 1660292.
+--- Part Two ---
+
+Your analysis only confirmed what everyone feared: the two lists of location IDs are indeed very different.
+
+Or are they?
+
+The Historians can't agree on which group made the mistakes or how to read most of the Chief's handwriting, but in the commotion you notice an interesting detail: a lot of location IDs appear in both lists! Maybe the other numbers aren't location IDs at all but rather misinterpreted handwriting.
+
+This time, you'll need to figure out exactly how often each number from the left list appears in the right list. Calculate a total similarity score by adding up each number in the left list after multiplying it by the number of times that number appears in the right list.
+
+Here are the same example lists again:
+
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3
+
+For these example lists, here is the process of finding the similarity score:
+
+    The first number in the left list is 3. It appears in the right list three times, so the similarity score increases by 3 * 3 = 9.
+    The second number in the left list is 4. It appears in the right list once, so the similarity score increases by 4 * 1 = 4.
+    The third number in the left list is 2. It does not appear in the right list, so the similarity score does not increase (2 * 0 = 0).
+    The fourth number, 1, also does not appear in the right list.
+    The fifth number, 3, appears in the right list three times; the similarity score increases by 9.
+    The last number, 3, appears in the right list three times; the similarity score again increases by 9.
+
+So, for these example lists, the similarity score at the end of this process is 31 (9 + 4 + 0 + 0 + 9 + 9).
+
+Once again consider your left and right lists. What is their similarity score?
+
+Your puzzle answer was 22776016.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day01/code.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+
+import sys
+
+if __name__ == '__main__':
+    tuples = [[int(l) for l in line.strip('\n').split('   ')] for line in open(sys.argv[1])]
+    first, second = [sorted(a) for a in zip(*tuples)]
+            # first = []
+            # second = []
+            # for line in lines:
+            #     f, s = line.split('   ')
+            #     first.append(int(f))
+            #     second.append(int(s))
+            # first.sort()
+            # second.sort()
+
+    # challenge 1
+    res1 = sum([abs(x-y) for (x,y) in zip(first, second)])
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    res2 = sum([x * second.count(x) for x in first])
+    print(f"challenge 2:\n{res2}")
+

2024/day01/input

@@ -0,0 +1,1000 @@
+15244   50562
+81245   49036
+92897   21393
+63271   60643
+49672   33212
+92232   76048
+53492   58600
+92941   61161
+58509   86979
+28174   73806
+70084   21118
+24410   68037
+84499   63407
+66548   35177
+65580   63759
+87805   49036
+83099   19486
+18390   12243
+26848   76511
+18807   86451
+72147   24247
+79927   19614
+11257   32484
+58028   46123
+75951   64756
+50715   78058
+95795   74458
+32111   39063
+46546   38789
+72734   39167
+98182   93444
+62716   53597
+89475   25175
+39176   55091
+40923   88724
+62512   51774
+86618   93444
+52758   47249
+13428   93526
+21791   94210
+93809   21118
+17938   14392
+60129   64756
+70192   49036
+12155   79882
+40333   53270
+23806   88706
+46661   85277
+88336   57672
+87513   36284
+41580   97455
+39488   79018
+53900   78058
+63780   98092
+18471   20090
+77849   73059
+93111   78100
+52950   22317
+81379   35177
+91351   19771
+14227   53597
+51335   39645
+98624   98092
+21994   54585
+60107   60337
+63161   47739
+42618   96226
+94665   84252
+79153   34048
+78730   80552
+75722   70308
+68857   47918
+88672   98092
+59881   27613
+85772   32111
+30276   98092
+14586   84246
+67593   49036
+72269   13771
+25858   56490
+33541   15922
+16446   54557
+47844   62540
+78173   49722
+50682   88706
+75282   74146
+62042   83481
+18797   76066
+24212   35217
+55048   57348
+91631   84573
+93807   97649
+88119   98092
+19366   77445
+76255   50452
+98264   93444
+64583   34766
+96480   54682
+67367   64709
+12629   53597
+55622   98092
+48715   75722
+38717   98460
+88940   42098
+57583   21667
+13512   32111
+89814   60737
+64756   93444
+16224   53597
+10346   46433
+73809   55198
+80544   20677
+11856   76359
+59087   21118
+72673   20090
+49449   45231
+20810   98650
+28257   76359
+72761   88706
+87721   84970
+33910   17682
+71512   76359
+51593   34928
+52645   73953
+65785   21745
+29202   39203
+84191   30175
+90538   28190
+36816   33095
+74544   38282
+97584   54184
+58739   93390
+75540   64756
+68067   64756
+52407   25292
+15044   66413
+20591   93444
+25885   37703
+26653   32104
+42596   88313
+23950   64756
+52254   88313
+70806   44075
+42195   20677
+36372   36394
+47944   93575
+38297   21118
+19998   76359
+88241   78058
+73698   44859
+92258   29814
+98092   78058
+28030   88927
+53514   59214
+77999   30893
+66582   71673
+79423   10257
+46938   86494
+42971   21118
+11339   13583
+71889   43763
+25429   62716
+81687   15843
+35428   14294
+21885   88053
+98374   37224
+81362   34784
+41486   20677
+20831   98092
+26838   45057
+89226   64709
+11351   66528
+20955   49036
+34764   42441
+43198   21118
+54892   21799
+64587   51818
+62645   88706
+39255   32111
+65266   40330
+20283   30516
+56574   21118
+12809   35177
+23338   15079
+58721   76273
+68541   33747
+46673   34048
+59073   25694
+80216   62716
+81975   28478
+44297   45993
+34344   98092
+63009   28253
+43350   24492
+95286   35177
+33964   82330
+87854   76359
+23407   81183
+95569   74797
+45440   77445
+80991   19568
+30893   61274
+26305   69824
+60205   68773
+12663   76359
+43419   89650
+39569   77945
+73240   17501
+84277   39378
+94177   89662
+95690   94786
+92242   91731
+73905   51412
+35977   13583
+27680   20677
+79830   79733
+84278   52001
+85984   62716
+39122   37115
+78800   35929
+33253   76179
+83659   33516
+91248   15310
+89362   39762
+15884   24386
+98545   18731
+15249   34048
+47287   77445
+68392   27779
+62854   73116
+43214   39063
+65154   73341
+71451   89287
+85490   10108
+10175   60337
+79597   54843
+15040   15044
+96993   21393
+36177   66813
+44659   38606
+10713   49127
+95267   84970
+38841   75464
+33233   71632
+73302   93444
+40471   21118
+26947   80385
+39627   51365
+47637   30893
+53778   29214
+79782   45138
+10038   45411
+86184   64709
+69322   93444
+70602   88706
+85109   49036
+58501   31677
+97931   25694
+24913   88313
+19478   93437
+51774   23744
+45194   46530
+78436   13583
+75773   53334
+24862   77445
+98325   49788
+68242   44288
+21878   78058
+22527   15044
+53407   98092
+33702   78511
+76946   86061
+34943   94066
+66974   23236
+87132   37827
+28641   88706
+78825   49515
+14741   98092
+56627   38087
+47539   85498
+40528   88706
+71885   11213
+83869   60337
+13761   97944
+75267   94765
+76391   40872
+84919   45561
+82510   26839
+42950   66528
+53597   88930
+51068   43621
+41152   77639
+82758   52077
+38873   70358
+88084   36028
+96405   64127
+24799   34048
+77846   98859
+20374   69465
+63292   73846
+11172   84410
+23525   74835
+94244   21118
+32196   95922
+28936   38955
+27350   25044
+20053   63490
+62187   53533
+15008   20677
+44778   75218
+34221   98092
+39018   98053
+23017   49363
+87337   21579
+72930   17695
+93295   39063
+66854   16885
+34104   34048
+60507   13583
+10728   15374
+24778   14446
+71424   89693
+40413   18036
+78058   75722
+37560   88706
+13236   77445
+87173   93444
+73989   37520
+14985   45194
+24184   81289
+28240   76359
+12680   21118
+97498   36199
+93727   75722
+17373   64709
+15927   39063
+30358   20677
+65650   35177
+46846   81415
+53260   86686
+32998   80757
+61488   21055
+95554   23175
+19043   88313
+99442   65217
+35322   56161
+58264   30893
+48887   76048
+96519   97502
+88445   49036
+22815   21393
+26997   56009
+45084   25370
+82066   63417
+88706   13583
+37524   92452
+67340   90779
+37641   60337
+84745   45323
+11631   83982
+19247   76359
+92635   34048
+36981   35177
+31598   74065
+54121   28812
+76881   60337
+99584   27133
+55312   55677
+83419   35177
+13942   23226
+89059   79979
+45943   14892
+49359   83296
+68331   84970
+36265   20090
+46411   98346
+25016   74405
+61228   86987
+47787   64766
+61125   43591
+23793   91663
+20371   49202
+40797   98092
+45793   88706
+68119   25069
+93194   73910
+29041   68173
+40414   90131
+35827   54613
+95241   34755
+34804   49863
+19037   54929
+15853   56399
+28746   57681
+33009   13250
+37386   50787
+89907   88313
+65824   37078
+29642   18922
+25336   60337
+77952   46523
+44241   87880
+25674   39063
+21393   48408
+58355   99461
+69496   39332
+27282   98092
+69938   71743
+83723   88313
+88439   45323
+46485   88255
+39718   23226
+23065   93444
+27197   78058
+72503   76359
+20982   64709
+60535   63346
+38653   13583
+77768   52721
+11298   49544
+42013   66528
+18141   45194
+81075   96111
+39115   37630
+18584   71632
+73719   94863
+85615   69932
+16171   24776
+78057   89054
+97570   12724
+51603   32111
+62411   76116
+72300   95646
+34238   21393
+38052   45323
+29020   84647
+41893   45194
+39513   48753
+11610   14667
+95685   21393
+95779   20677
+15324   63196
+76334   94163
+68091   45194
+38482   70862
+15369   88313
+89175   64021
+60543   34048
+56673   50331
+49457   34048
+71887   13583
+88321   21118
+71071   23226
+67178   49036
+91821   21118
+20076   10076
+87303   84970
+57511   12268
+43501   30007
+91975   66528
+15448   72284
+69907   43654
+25571   11414
+52353   15044
+69803   78058
+40474   52042
+26253   70310
+39802   97896
+83210   97215
+37474   88313
+31093   97572
+42301   23226
+19726   13583
+94312   49036
+58482   25755
+98687   38510
+19047   98092
+26950   78058
+71158   28096
+96412   84970
+35920   30893
+44526   99812
+42755   51182
+24379   30893
+70947   60543
+54882   71632
+51233   33596
+20462   79975
+53935   84134
+74070   62410
+54102   22085
+13298   20677
+26602   92907
+42648   49332
+22183   93444
+30822   98092
+86804   77932
+10838   88167
+24523   65219
+41568   62650
+80060   79089
+21439   70889
+66602   41342
+19704   34111
+67226   95394
+65479   92893
+37260   49036
+31997   30937
+97707   31068
+13170   78674
+26045   35177
+24059   35177
+32491   33653
+75897   71632
+10612   84970
+11001   88313
+35498   68825
+96341   10573
+23226   39063
+69398   67618
+17730   60337
+86503   45099
+72504   98743
+82150   90026
+68294   54832
+80912   34048
+96999   49036
+97530   20090
+35480   49036
+20998   30893
+70873   60337
+91802   62572
+54034   15709
+32710   84970
+58337   58861
+59198   59125
+61993   93321
+79647   21393
+26291   54259
+74198   76048
+57851   49450
+75838   37799
+60309   13382
+86676   72545
+29406   23958
+76718   75217
+33197   67338
+65924   20094
+88612   52547
+75554   14101
+36525   94200
+70266   20090
+36358   87645
+36508   93007
+28589   91657
+48088   77015
+22798   11552
+56726   20677
+80189   32314
+21360   96490
+90866   88706
+39003   18500
+27798   10095
+66032   15135
+11051   34048
+94174   88313
+15442   61388
+10452   20090
+11929   13583
+34739   41426
+64828   49036
+73891   39034
+52449   99470
+71065   77445
+89965   71632
+60544   34717
+21118   78369
+49478   35177
+26213   93444
+49857   23226
+74220   32262
+72833   27081
+38455   99610
+54342   61755
+43456   26783
+24034   76570
+32201   17321
+23799   39823
+72637   37646
+10964   34048
+42818   20090
+21006   39063
+39063   82696
+30375   66442
+15052   93444
+87906   50391
+17028   10100
+81936   32511
+12837   64709
+16027   78058
+49036   60337
+99212   39063
+28629   21118
+65863   84395
+20677   39063
+92405   60182
+55155   39063
+39167   69664
+74584   30893
+69147   41166
+75535   23751
+41314   88960
+47916   76048
+95846   15467
+14883   29065
+85080   93428
+52335   68547
+98645   93444
+39194   96760
+73927   23226
+90575   88313
+46134   11217
+85511   31236
+10109   37785
+20240   30893
+26094   56917
+35316   34048
+73503   25694
+89783   93444
+76048   84368
+63277   64756
+70675   53597
+44803   20677
+47915   20090
+12885   20090
+96783   88706
+55441   39063
+28482   98092
+91088   20088
+56209   49036
+73427   54203
+84253   46441
+45378   88313
+61961   65758
+68877   21118
+99259   53597
+52459   33058
+52656   56240
+95881   45231
+77445   13060
+91203   71632
+80736   20127
+33376   22802
+35538   34048
+98323   92633
+51634   45231
+55669   87627
+21536   17362
+32629   77445
+49199   71632
+57371   20583
+23040   90921
+73189   76359
+18892   84970
+75932   53597
+35376   53731
+29756   88313
+80575   64370
+11795   42629
+72509   82819
+80073   66528
+39611   78343
+55678   77155
+74003   35177
+82981   87429
+44472   88313
+15879   43889
+92293   30401
+68169   72422
+46139   13583
+25753   71632
+29238   13583
+65772   94594
+72372   98661
+49282   29132
+59258   51774
+20268   19289
+68202   10161
+30853   12555
+79108   66252
+93219   49036
+97625   14093
+15662   78058
+74532   12621
+84970   66528
+43513   68633
+24015   37782
+61575   50110
+75452   32111
+95466   69622
+27039   13583
+72285   35711
+84251   33375
+29424   76359
+58618   70025
+14379   66528
+89386   88706
+93381   20090
+91398   98680
+42769   45231
+12169   87022
+25979   78058
+72635   41261
+17059   63554
+47259   79838
+76636   98092
+73546   95012
+91197   19703
+65589   88706
+73955   16375
+23737   62914
+57497   65544
+89971   53597
+65549   60337
+49793   76048
+47384   76610
+23011   71632
+50105   41881
+56427   43543
+30880   76048
+24879   88313
+68581   69278
+74682   15597
+43180   76048
+90603   49036
+52305   12532
+22850   81110
+83915   39167
+19676   43682
+18372   71954
+89452   88706
+59733   65480
+70454   82540
+60701   46004
+90655   83636
+70929   71632
+28216   29450
+96165   67274
+34322   77426
+31874   57584
+54166   90667
+99511   98508
+31060   92465
+55106   51095
+79552   22669
+27806   75575
+46797   33693
+64746   32111
+76861   10157
+76339   65246
+13583   91436
+14467   16938
+85582   35177
+13718   20378
+99759   66607
+59581   15550
+96543   22529
+86658   75460
+65202   88706
+38311   38185
+19721   38534
+20090   65369
+21044   60105
+45323   93444
+41853   88706
+48731   39841
+44220   71632
+49345   80849
+77455   96766
+64991   79807
+84833   99183
+15508   15491
+31649   95360
+47963   15187
+32556   10033
+98424   72571
+20214   45512
+92261   73300
+83550   30893
+40965   30434
+73994   76048
+55035   53597
+25828   60337
+75771   88313
+67673   77526
+44405   93052
+18454   90175
+88189   33126
+87628   49036
+71632   71504
+37621   85292
+23775   66528
+52816   35363
+30089   60337
+98618   96587
+44216   21118
+26104   88313
+42299   45510
+45953   35177
+88461   49036
+94707   98092
+44832   34048
+30018   97006
+10073   60126
+32801   21118
+93444   78058
+14724   75670
+88496   89181
+97226   64756
+44779   84970
+20417   20090
+74763   34048
+86926   21988
+82229   51396
+41522   77498
+97004   64462
+94063   53597
+33439   77445
+52901   86349
+95858   45194
+46763   37729
+99339   32386
+97353   39063
+30474   20090
+29221   48754
+54778   62716
+32771   39063
+20116   71632
+69722   87766
+51398   43440
+97793   76359
+56926   32111
+66003   75722
+11344   94388
+45264   39251
+94465   49036
+12978   38585
+17184   53348
+87705   34048
+32187   85695
+51481   78692
+54232   60337
+99572   51669
+29822   15075
+65918   82780
+66528   23226
+40810   85626
+71957   88313
+93701   88706
+10667   73326
+51857   77839
+13968   15900
+99521   15237
+43540   92443
+27624   12544
+65271   76048
+44186   14578
+33230   21393
+33874   35177
+54932   45194
+18315   53578
+69769   71632
+75322   51896
+20861   47764
+88546   23226
+29838   93444
+83883   52312
+67889   35177
+59762   39167
+30665   65756
+13966   93444
+38266   43913
+60711   39167
+42774   72205
+76359   37929
+65904   13043
+34048   77445
+38275   66528
+84943   34580
+50731   74327
+64612   53597
+14016   49346
+55402   66508
+93047   76359
+49251   20090
+75392   87115
+90871   76589
+13432   49036
+18501   19808
+73315   38104
+18380   78457
+56744   85328
+44147   13583
+98969   79480
+16683   63967
+83183   68296
+33184   80175
+36362   93444
+40671   53597
+65788   71632
+23573   75722
+50571   60337
+67765   76048
+73101   48453
+67112   35176
+46594   70172
+75172   17447
+45231   76197
+20392   53244
+35352   32191
+20609   45194
+78496   95165
+12271   85861
+89991   76048
+65923   30779
+71880   30893
+73845   19368
+25694   77445
+44679   71632
+95542   29625
+72865   48533
+43025   65302
+38909   78058
+38961   77445
+12553   66528
+66378   76359
+79514   46457
+96727   76359
+12664   91220
+22671   32111
+60272   21393
+54910   43373
+78968   52670
+31357   84820
+98176   98092
+43398   88955
+51128   13514
+97517   39212
+53814   40263
+56961   35177
+90552   31236
+13602   13583
+12187   44890
+47432   44401
+84078   64709
+77515   71632
+88313   70149
+69118   78954
+75221   27687
+64709   20090
+89680   59037
+31715   65294
+61413   21118
+75865   32111
+67755   31175
+52584   94277
+47546   95471
+91225   55015
+28913   58527
+65645   71632
+19183   39377
+47460   95947
+75848   23226
+56518   43259
+60240   48233
+31724   84970
+37699   76048
+18796   64805
+37497   45231
+42751   75722
+28509   34048
+90061   17966
+65385   83274
+72856   25904
+41016   21118
+86979   93485
+18571   88706
+37984   84970
+36879   21118
+72715   56620
+88099   34048
+61613   85581
+15090   77445
+35177   86160
+52551   58172
+60337   20677
+95870   77445
+51272   34048
+31236   15332
+77046   35697

2024/day02/challenge

@@ -0,0 +1,62 @@
+--- Day 2: Red-Nosed Reports ---
+
+Fortunately, the first location The Historians want to search isn't a long walk from the Chief Historian's office.
+
+While the Red-Nosed Reindeer nuclear fusion/fission plant appears to contain no sign of the Chief Historian, the engineers there run up to you as soon as they see you. Apparently, they still talk about the time Rudolph was saved through molecular synthesis from a single electron.
+
+They're quick to add that - since you're already here - they'd really appreciate your help analyzing some unusual data from the Red-Nosed reactor. You turn to check if The Historians are waiting for you, but they seem to have already divided into groups that are currently searching every corner of the facility. You offer to help with the unusual data.
+
+The unusual data (your puzzle input) consists of many reports, one report per line. Each report is a list of numbers called levels that are separated by spaces. For example:
+
+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9
+
+This example data contains six reports each containing five levels.
+
+The engineers are trying to figure out which reports are safe. The Red-Nosed reactor safety systems can only tolerate levels that are either gradually increasing or gradually decreasing. So, a report only counts as safe if both of the following are true:
+
+    The levels are either all increasing or all decreasing.
+    Any two adjacent levels differ by at least one and at most three.
+
+In the example above, the reports can be found safe or unsafe by checking those rules:
+
+    7 6 4 2 1: Safe because the levels are all decreasing by 1 or 2.
+    1 2 7 8 9: Unsafe because 2 7 is an increase of 5.
+    9 7 6 2 1: Unsafe because 6 2 is a decrease of 4.
+    1 3 2 4 5: Unsafe because 1 3 is increasing but 3 2 is decreasing.
+    8 6 4 4 1: Unsafe because 4 4 is neither an increase or a decrease.
+    1 3 6 7 9: Safe because the levels are all increasing by 1, 2, or 3.
+
+So, in this example, 2 reports are safe.
+
+Analyze the unusual data from the engineers. How many reports are safe?
+
+Your puzzle answer was 624.
+--- Part Two ---
+
+The engineers are surprised by the low number of safe reports until they realize they forgot to tell you about the Problem Dampener.
+
+The Problem Dampener is a reactor-mounted module that lets the reactor safety systems tolerate a single bad level in what would otherwise be a safe report. It's like the bad level never happened!
+
+Now, the same rules apply as before, except if removing a single level from an unsafe report would make it safe, the report instead counts as safe.
+
+More of the above example's reports are now safe:
+
+    7 6 4 2 1: Safe without removing any level.
+    1 2 7 8 9: Unsafe regardless of which level is removed.
+    9 7 6 2 1: Unsafe regardless of which level is removed.
+    1 3 2 4 5: Safe by removing the second level, 3.
+    8 6 4 4 1: Safe by removing the third level, 4.
+    1 3 6 7 9: Safe without removing any level.
+
+Thanks to the Problem Dampener, 4 reports are actually safe!
+
+Update your analysis by handling situations where the Problem Dampener can remove a single level from unsafe reports. How many reports are now safe?
+
+Your puzzle answer was 658.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day02/code.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def safe(report):
+    if report == sorted(report) or report == sorted(report, reverse=True):
+        start = report[0]
+        for l in report[1:]:
+            if 1 > abs(l-start) or 3 < abs(l-start): return False
+            start = l
+        return True
+    return False
+
+
+if __name__ == '__main__':
+    reports = [[int(x) for x in line.strip('\n').split(' ')] for line in open(sys.argv[1])]
+
+    # challenge 1
+    saferep = sum([safe(r) for r in reports])
+    res1 = saferep
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    for r in reports:
+        if not safe(r):
+            tolerate = False
+            for i in range(len(r)):
+                r1 = r[0:i] + r[i+1:len(r)]
+                if safe(r1):
+                    tolerate = True
+                    break
+            saferep += tolerate
+
+    res2 = saferep
+    print(f"challenge 2:\n{res2}")

2024/day02/example

@@ -0,0 +1,6 @@
+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9

2024/day02/input

@@ -0,0 +1,1000 @@
+31 34 36 38 40 43 46 44
+67 68 70 72 74 77 79 79
+32 35 36 38 42
+18 21 22 24 27 30 35
+63 66 67 66 69 72
+63 64 67 64 65 67 64
+35 36 38 41 38 40 42 42
+59 62 63 64 66 64 67 71
+55 57 55 56 61
+58 60 62 62 65 67 68
+84 86 89 91 93 94 94 91
+32 34 36 36 37 39 41 41
+13 15 18 19 19 21 22 26
+61 64 64 67 68 74
+56 57 58 61 65 66 68
+53 56 57 61 62 64 62
+78 80 84 85 85
+38 39 41 45 47 51
+2 5 8 9 12 16 18 24
+50 51 53 55 60 61
+31 32 37 39 40 42 40
+46 48 53 54 54
+40 43 45 51 55
+31 32 35 37 44 45 51
+15 12 15 18 20 23 25 27
+78 76 79 80 78
+46 45 48 49 52 54 54
+17 16 17 20 24
+80 78 80 82 83 90
+48 47 44 46 48
+62 60 59 62 61
+26 23 24 26 24 26 28 28
+4 3 1 4 5 7 9 13
+48 45 43 45 47 52
+93 90 92 95 95 98
+80 79 81 81 83 84 83
+6 4 4 6 8 8
+8 5 6 9 12 12 16
+42 41 41 44 45 47 54
+66 63 64 68 70 73
+45 43 44 46 50 49
+5 4 7 11 12 14 14
+72 71 75 78 80 84
+79 77 79 82 83 87 88 93
+75 74 76 77 84 85
+26 25 28 30 36 39 38
+26 25 26 32 32
+49 47 50 53 60 61 65
+18 16 17 18 23 29
+73 73 74 75 78
+43 43 46 47 49 50 51 50
+87 87 89 90 93 93
+52 52 55 58 62
+78 78 81 82 83 85 91
+48 48 46 49 51
+89 89 92 93 91 92 95 94
+13 13 15 14 16 19 19
+68 68 65 66 68 72
+39 39 37 38 39 46
+23 23 25 25 26 29
+90 90 93 94 94 95 98 96
+26 26 27 30 30 31 32 32
+61 61 64 66 66 70
+34 34 34 36 41
+35 35 37 39 40 44 45
+70 70 74 77 79 82 84 82
+16 16 19 23 26 28 29 29
+41 41 42 46 50
+33 33 34 38 40 46
+28 28 29 36 39
+79 79 85 87 88 90 89
+66 66 69 72 77 77
+49 49 51 52 59 63
+38 38 40 42 49 56
+78 82 84 86 88 90 91
+41 45 48 50 52 49
+60 64 67 68 69 72 75 75
+78 82 83 85 89
+33 37 40 42 48
+78 82 85 87 89 87 88 89
+2 6 5 6 7 9 7
+1 5 3 5 6 8 8
+81 85 83 84 86 90
+65 69 67 68 69 72 74 81
+15 19 21 24 26 26 28
+4 8 11 14 14 16 15
+9 13 14 14 17 17
+15 19 20 20 22 26
+9 13 15 16 16 22
+16 20 23 27 30
+18 22 25 29 31 29
+1 5 6 8 10 13 17 17
+9 13 17 20 22 26
+28 32 33 37 40 46
+30 34 36 38 40 47 50
+44 48 54 57 59 60 61 58
+9 13 16 22 22
+62 66 68 71 77 81
+36 40 42 49 54
+43 50 53 55 56 58 60 63
+5 10 11 13 10
+5 11 12 15 17 19 19
+34 39 40 43 47
+50 57 59 60 61 63 70
+38 43 44 43 46 48 51
+79 85 88 85 87 86
+72 78 79 76 78 80 81 81
+42 48 47 48 52
+55 62 63 66 68 65 70
+47 54 55 55 58 59 60
+79 85 87 87 89 88
+7 14 17 20 23 24 24 24
+68 73 75 75 76 77 79 83
+9 16 19 19 24
+66 72 73 77 79
+12 18 22 23 24 23
+26 32 33 36 38 42 44 44
+30 37 39 43 46 50
+66 73 74 75 79 86
+47 53 58 60 62
+46 53 59 62 59
+56 61 63 66 68 75 76 76
+23 29 32 34 39 40 44
+33 40 41 43 48 49 56
+13 12 11 9 11
+41 38 35 33 33
+99 96 94 93 90 88 84
+20 19 17 16 13 7
+80 79 78 75 72 70 71 70
+88 87 88 86 85 83 84
+44 42 41 44 43 43
+23 20 17 18 15 14 10
+22 19 18 19 12
+17 16 16 13 12 9
+38 36 36 35 32 31 34
+41 40 40 39 38 37 35 35
+63 61 59 58 56 56 53 49
+30 27 26 26 21
+47 45 41 38 37
+48 46 45 41 43
+27 26 24 20 19 19
+17 14 10 7 3
+66 64 60 57 52
+82 81 78 73 70 68 65
+93 90 87 84 82 75 77
+83 81 80 73 73
+41 38 32 29 25
+50 49 48 41 36
+83 86 83 81 78 75
+39 41 39 37 36 37
+39 41 39 37 37
+61 62 59 58 57 54 50
+61 62 59 57 51
+72 73 72 71 74 73
+90 92 93 91 88 87 88
+31 33 30 31 28 25 25
+74 75 73 72 71 70 73 69
+78 81 78 79 78 71
+66 69 69 66 63 61 60 57
+7 9 6 5 5 7
+51 53 52 52 51 51
+90 92 89 86 86 84 80
+88 91 91 90 89 83
+52 55 54 50 48 46 45 44
+87 90 88 86 82 81 78 81
+46 49 48 45 41 38 38
+41 42 38 37 33
+90 93 91 90 88 84 81 76
+52 54 52 46 43 42
+43 46 43 36 38
+12 14 11 10 8 7 2 2
+29 30 23 22 21 17
+68 71 65 64 61 59 56 51
+99 99 97 94 93 90
+46 46 45 44 47
+65 65 62 60 59 57 54 54
+90 90 87 86 84 81 80 76
+22 22 20 19 18 17 10
+56 56 55 53 55 54 51 49
+46 46 47 44 45
+94 94 95 92 90 90
+51 51 54 51 47
+64 64 62 64 62 60 55
+99 99 97 96 96 93 90 89
+70 70 70 68 66 64 66
+91 91 89 87 84 84 83 83
+92 92 92 91 89 85
+11 11 8 8 6 1
+81 81 80 76 73 70
+56 56 54 50 48 45 43 45
+72 72 69 68 64 61 59 59
+80 80 77 73 69
+61 61 59 55 49
+24 24 21 20 15 14 12 9
+38 38 35 32 26 28
+53 53 52 51 49 42 42
+60 60 54 52 51 50 46
+42 42 39 36 34 27 20
+16 12 11 8 7 4
+34 30 28 27 25 22 25
+94 90 88 87 84 84
+84 80 77 76 75 74 70
+65 61 59 58 57 55 49
+72 68 71 68 65 64
+75 71 70 71 70 71
+97 93 91 88 85 87 86 86
+29 25 23 26 22
+92 88 86 89 86 83 80 75
+85 81 79 78 78 77 75 73
+80 76 75 75 72 69 72
+59 55 52 52 49 49
+60 56 56 54 50
+75 71 71 70 67 60
+81 77 76 72 70
+36 32 31 27 29
+86 82 79 77 73 71 71
+56 52 49 45 41
+94 90 86 85 80
+95 91 88 87 84 78 76
+63 59 56 55 54 47 49
+63 59 56 54 48 48
+70 66 59 57 55 53 49
+24 20 18 15 8 7 6 1
+61 54 51 50 47 46
+31 25 23 21 19 16 15 17
+89 82 80 77 77
+58 53 51 48 44
+63 56 55 52 50 47 45 38
+58 52 50 52 50 47 45
+86 79 80 79 82
+70 63 61 60 63 63
+54 48 47 45 46 42
+58 53 52 54 52 45
+54 47 44 41 39 39 36 33
+56 51 50 50 49 47 49
+79 73 73 70 69 69
+80 73 72 71 71 69 67 63
+70 63 62 60 59 58 58 52
+21 15 12 9 6 2 1
+42 35 33 29 31
+36 30 26 23 23
+30 23 22 21 18 16 12 8
+29 24 20 17 14 9
+47 42 36 34 33
+99 93 90 89 82 81 78 81
+29 22 17 16 16
+59 53 52 50 48 46 40 36
+97 92 85 82 81 79 78 71
+52 57 60 61 62 64 70 73
+14 13 11 10 9 7 5 1
+42 44 47 50 53 57 60 64
+34 27 27 25 25
+92 90 90 92 99
+73 75 76 78 82 85 87 85
+23 19 21 18 16 14 8
+21 26 27 28 30 27 33
+26 23 24 27 31 32 31
+30 31 33 32 29 28 26 26
+42 44 45 46 46 48 49 55
+45 49 52 53 55 60
+22 26 28 31 32 35 37
+47 47 46 42 42
+61 61 60 62 61 58 56 50
+15 15 15 18 21 19
+28 26 22 19 12
+23 29 30 33 30 32 35 39
+20 20 17 16 13 9 7 2
+76 72 71 70 67 65 59 55
+78 81 81 82 83
+35 40 42 44 47 49 49
+87 83 86 83 82 82
+37 32 30 27 24 20 20
+21 21 23 21 28
+41 39 40 42 45 48 51 51
+74 74 73 70 68 67 65
+84 85 84 82 80 76
+45 45 39 38 38
+47 43 43 41 38 31
+33 33 32 29 22 21 15
+31 37 40 40 47
+62 62 63 65 67 68 69
+70 67 64 63 61 62 57
+39 34 33 30 29 26 26 19
+63 63 64 66 66 68 69 71
+38 45 48 51 50
+53 59 63 66 65
+59 59 56 56 55 56
+71 67 66 64 60
+48 50 57 60 60
+73 73 75 76 76 77 77
+62 62 63 70 71
+45 41 38 34 33 31 29 26
+85 85 88 89 92 89 92 90
+64 61 60 59 56 53 48
+49 47 48 51 53 53 53
+17 16 13 15 16 18 18
+56 57 58 62 65 72
+13 13 18 20 20
+76 72 67 66 64 58
+4 11 12 13 15 19 19
+32 28 27 24 21 14 11 11
+11 11 10 10 6
+42 42 44 45 47 53 56 60
+96 95 94 93 91 91 89 87
+77 80 77 75 74 72
+41 45 49 52 55 56 59
+30 35 36 37 38 38 41
+69 72 73 76 78 80 80 84
+78 74 71 69 68 64 66
+21 16 12 10 6
+94 90 86 83 83
+81 85 88 89 90 88
+43 45 43 39 37 33
+99 95 94 91 94
+57 57 54 52 50 47 45 39
+24 25 23 22 15 14 14
+88 84 83 80 79 76 74 74
+98 94 92 90 89 85 80
+37 37 38 41 44 44
+95 96 96 93 92 85
+6 6 7 9 15 17 16
+68 71 78 80 81 85
+35 37 39 40 41 42 43 43
+30 34 37 40 41 45 45
+9 13 15 15 16 19 22 26
+55 49 46 45 42 40 41
+76 72 68 67 63
+26 33 36 37 34 35
+51 44 41 39 41 39 35
+12 9 11 14 15 16 18 15
+42 42 45 45 46 48 49 56
+4 8 9 10 8 8
+17 15 18 19 21 22
+53 53 50 49 44 42 44
+8 12 16 18 20 24
+67 68 70 69 69
+56 49 44 43 42 40 43
+39 41 42 43 49 50
+39 37 40 43 44 49 53
+59 63 66 72 72
+44 44 47 48 49 52 56 56
+62 59 57 57 58
+83 83 81 78 77 73
+54 58 60 62 69 74
+37 35 35 32 26
+39 43 46 52 55
+31 27 24 22 21 20 18
+73 80 83 84 86 90
+67 69 67 67 64 63 61
+53 54 51 48 45 44 45
+34 34 35 36 38 40 37 37
+73 75 72 71 68 65 62 62
+39 46 52 53 55 52
+32 32 31 29 26 28 28
+6 9 12 10 7
+26 26 28 32 35 38 40 44
+67 70 67 65 58
+32 33 32 31 30 23 20
+17 16 16 13 9
+81 80 79 77 75 69 66
+22 21 21 22 24 26 29 33
+91 91 93 91 92
+28 28 29 31 32 33 32
+39 39 40 37 34
+9 9 9 8 5 3 1 1
+21 19 18 14 13 12 15
+58 54 51 50 48 48 45 41
+14 12 6 4 3 5
+19 22 22 19 16 17
+87 80 74 72 68
+94 94 90 88 84
+16 10 13 10 8 8
+60 53 50 53 55
+56 53 50 47 46 47 44 42
+25 28 30 31 33 35 42 39
+33 28 25 23 20 19 15
+44 41 38 36 34 31 30
+51 49 48 45 42 41 39 37
+44 43 42 41 38
+88 85 82 81 78 76 75 74
+30 27 24 23 22 20 19
+94 92 90 89 88 85
+62 65 68 70 71 74
+48 50 53 54 57
+49 50 52 54 55 58 61 62
+51 54 56 57 60 63 66 68
+29 26 25 23 21
+17 14 11 8 6 5 2
+18 19 20 21 23 24
+67 65 63 62 59 57
+52 49 48 47 45 44 43
+55 56 58 61 62 64 66 67
+60 58 57 54 51 50
+56 59 60 62 64 66
+70 72 73 75 76
+20 21 24 27 28 30
+52 55 57 60 62 65
+84 82 79 77 76 74
+58 59 61 63 66 69 71 74
+36 35 32 29 26 23 21
+69 70 72 73 76 78 81
+53 52 50 47 44 41 38 35
+62 63 64 65 67 68
+65 63 61 59 56 54 53 50
+75 76 77 80 82 85 86
+68 66 64 61 60 57 56 55
+14 12 9 8 6 4 3
+78 76 73 70 67 66 63
+28 29 30 31 34 35 37
+32 31 29 27 26 23 22 19
+66 65 63 60 59 57 54
+10 11 13 16 17 19 22
+61 64 65 67 70 73 76 78
+81 78 77 75 73
+40 37 34 32 31
+35 37 39 40 41 43 45 47
+49 51 52 54 56 59 61 64
+52 54 55 56 57
+86 85 84 81 80 79
+53 50 49 46 43
+44 42 41 40 37
+32 35 36 39 41 44 45 48
+25 27 28 29 30 31
+90 88 86 85 83
+42 45 48 50 51 53 54
+22 20 19 16 13
+93 90 87 84 82 80 78
+18 16 15 13 12 10 7 4
+96 94 92 89 87 85 84 83
+38 41 44 46 49 52
+63 62 60 57 55 52 49 46
+51 52 55 58 61 64 67
+77 78 79 82 84 87
+58 61 62 63 65
+55 58 59 62 65 68 69 70
+29 28 25 23 22 20 18
+18 20 22 24 26 29 32
+77 78 79 81 83 86 87
+15 14 11 9 6
+72 71 68 67 66
+82 84 85 87 88 89 92
+50 49 48 47 44 42 40 39
+82 80 78 77 74 71 68
+60 58 55 54 53
+71 72 73 76 77 79
+38 39 41 44 45 47 50 51
+65 62 61 59 56 53 51
+56 57 60 62 65
+34 37 39 42 44 47
+12 14 16 19 22 25
+19 17 16 15 14 12 10
+22 20 19 17 16 15 13 10
+82 79 78 77 74 71
+15 13 10 7 6 4
+56 58 59 61 63 65 66 69
+86 85 83 81 78 77 74
+75 74 71 69 67 65
+33 31 29 28 26 25 24 21
+58 60 62 63 65 68 71 74
+43 45 48 50 52
+15 17 20 23 24 25 26 29
+73 70 68 67 66 64 62
+91 88 87 84 82 81
+51 53 54 56 58
+9 11 14 17 19 22 23 26
+55 52 49 47 46
+9 11 13 15 17 18 20 21
+89 91 92 94 96 97 98
+58 59 60 61 64
+14 13 10 9 8
+30 33 36 39 41
+75 78 80 81 84 85 87
+40 42 43 45 46
+71 70 68 67 65
+21 23 25 28 31 33 34 36
+54 51 50 49 48
+61 64 67 70 73 74 75 78
+19 17 16 14 12 9 8 5
+22 24 27 28 30 32
+80 83 84 86 88 89 90
+95 93 90 89 88 85
+24 26 27 30 33 35 37
+96 93 90 89 87 85 82 81
+82 79 76 74 73 71 69 67
+77 74 71 69 67 65 64 61
+29 26 23 22 20 19 16 15
+72 69 66 63 61
+13 12 10 9 7 6 5
+15 18 21 22 24
+30 28 26 23 21 19 18
+49 46 43 42 39 37 36 33
+62 64 67 70 73 75 78 79
+47 46 45 42 41 40
+44 43 42 41 38 36
+52 50 49 47 44 41 38 36
+45 42 40 37 36 34 31
+16 14 11 8 6 5
+69 66 65 63 61 59 56
+29 26 24 21 20 19 18
+54 52 50 47 46 43 40 38
+80 83 85 86 88 89 91 92
+39 40 43 45 48 51 52 55
+80 79 78 77 76 75 72
+8 10 11 12 15 16 18 19
+86 89 90 91 93
+48 51 52 55 58 59 61 63
+75 72 70 67 65 62 60 59
+11 14 17 18 19 20 23 26
+52 49 47 45 42 41 38 35
+36 38 39 42 43 45 47 48
+73 70 67 65 62
+80 78 75 72 69
+72 70 67 65 62 61 59
+59 61 62 64 66
+8 11 12 14 17
+45 47 49 50 53 55 58 59
+51 50 48 47 46 43 42
+16 18 21 23 24 26
+21 20 19 16 15 12 11
+13 16 17 20 23 24 25
+94 92 91 90 89 86 83 80
+94 91 90 87 86 83 80
+17 14 12 11 8 7
+23 21 18 17 16
+76 75 74 72 71 70
+43 41 40 37 36
+32 34 35 36 39 40 43
+19 21 22 24 26 28
+13 14 16 17 19 22 24 26
+18 15 14 11 9 8
+63 62 60 58 56 55 52 51
+71 72 73 75 77 78
+40 42 43 46 48 50
+84 83 80 78 75 72 70
+28 31 32 34 37 39 40 42
+27 25 24 22 20
+79 77 75 73 72
+86 84 83 81 80 79
+81 83 86 89 92 94 96
+85 86 88 90 93 96 97
+81 78 75 72 71
+14 17 20 23 26 28 30 31
+66 65 62 59 58 57 54 52
+54 56 58 61 64 66 67
+37 35 33 31 30 27 26
+75 73 70 68 67
+76 75 73 70 68
+25 28 29 31 33
+70 73 75 78 80 83 84
+42 41 40 38 36 34 33
+20 21 22 24 26 29 31
+24 21 19 17 14 11 9
+77 75 73 70 68 65 63
+55 54 51 50 48 47
+78 77 76 75 73 72 69 68
+29 27 24 21 20 19
+73 71 70 69 67 64 62
+91 94 95 96 97
+11 13 14 16 19 20 23
+63 64 66 68 70 71 74 76
+64 63 61 58 57 56 54 53
+46 49 51 52 54 55
+20 22 24 25 28 31 32
+46 49 52 54 56
+74 77 79 81 82 85 86 89
+45 47 50 53 54
+58 57 55 54 51 50
+91 90 89 86 85 83 82 80
+49 46 43 42 39 36 35
+75 72 71 70 69 68 65 64
+42 41 39 36 33 32 31
+59 61 63 64 67 69 70 72
+79 81 83 85 86 87 90
+35 34 32 31 30
+76 73 71 68 67 65
+5 7 8 11 14
+26 28 29 30 32 33 34
+80 83 85 86 87 89
+19 18 16 14 13 10 7 4
+21 18 16 15 12 11
+64 67 70 72 75 76 79 80
+5 6 9 11 13
+87 85 82 80 77 75 72
+23 22 19 18 17 16 15
+51 50 47 44 41 38
+34 33 31 30 29 27
+39 36 33 30 27
+15 13 12 10 9 8
+27 28 31 33 35 36
+31 30 29 26 23 20 19
+47 46 44 41 39
+60 58 56 54 53 51 49 48
+50 47 44 42 39 36 33 30
+70 68 65 64 63 60
+61 63 66 69 72 75 77 78
+19 17 16 13 10 7
+51 50 47 45 44 42 41 40
+72 73 76 77 80 81
+69 68 65 64 62 60 58
+47 44 41 38 35
+33 30 27 24 22 20
+54 51 50 48 46 43
+96 95 94 93 91 88
+77 76 73 71 69
+2 3 5 7 9 10 12
+20 21 23 24 25 26 27
+28 26 25 23 21 20 18 17
+52 55 57 59 60 63 64
+37 35 32 29 26
+62 61 60 57 55 53 52 50
+80 82 83 86 87
+64 66 68 69 71 72
+22 19 16 14 13 11
+98 96 93 91 88
+22 25 27 28 31 32
+63 61 60 57 56 55 53 50
+13 10 8 6 4
+35 37 38 40 41 42 43
+95 94 93 90 88
+98 96 93 90 88 87
+39 40 43 44 45 48
+21 24 26 27 28 29
+31 34 36 39 40 41 42 43
+68 65 64 61 58
+47 49 52 54 57 60
+26 28 31 34 36 37 40 43
+82 84 86 89 91 93
+78 75 74 72 71 70
+43 46 49 50 52 53
+64 66 67 69 71
+1 4 7 9 10
+47 49 50 51 53 56
+54 53 52 49 46 43 42 40
+59 58 57 56 53
+29 28 26 23 20 18 15
+41 42 45 48 49 52 54 55
+30 32 34 37 40
+34 37 38 41 43 46 48 50
+18 20 23 25 26
+61 63 66 69 72 74 77
+34 37 40 42 45 48 49 51
+64 61 60 59 56 53 50
+71 68 66 63 61 58 55 53
+25 22 20 19 16 15 14
+25 22 21 19 18
+13 15 16 19 22 24 25
+53 54 56 58 60 62
+6 7 8 11 14 16
+61 60 59 58 56 54
+89 86 85 82 79 76 74 73
+19 21 23 26 28 30 31
+90 89 88 86 83
+68 69 71 72 74 75
+67 65 63 61 59
+13 11 9 7 6 5 4 3
+52 53 54 55 56 59
+82 80 77 76 74 73
+11 9 6 3 2
+59 60 62 64 65 67
+69 67 66 64 62
+65 67 68 71 74 75
+73 74 75 78 80 83 84 87
+96 93 91 88 85 83 81 80
+28 25 23 21 19 16
+61 62 63 66 67 70 73
+86 87 88 90 91
+69 66 63 61 59 58 56
+24 26 27 28 31 34 37
+15 16 18 20 22 23 24
+64 66 67 69 71 74 75 76
+77 76 75 73 70 68 66
+26 27 29 31 34 36
+95 94 93 92 90
+1 4 7 8 10 12 14
+66 64 62 60 58 56 55 54
+40 42 44 45 47 50 52 55
+16 17 18 20 22 24 26 29
+27 25 24 21 19 16 13
+99 96 95 93 91 89
+29 32 35 38 39 40 43
+96 94 92 91 88 85
+51 48 47 45 43
+37 35 34 31 28 27 25 23
+92 89 87 86 83
+69 71 74 77 80 83 85
+17 20 21 22 25 27 28 29
+15 16 18 19 21 22 23 26
+50 52 54 56 57 58 59 60
+63 60 57 54 53 50 47
+57 59 62 64 66 67 68
+82 81 79 76 74 73 71 69
+34 35 37 39 42
+81 83 86 89 90 92 95 98
+1 2 5 6 7 10
+57 55 52 51 50 48
+2 3 5 7 8 11 12 15
+14 11 10 8 5 4
+11 14 16 19 20
+73 76 78 79 81 84
+70 71 73 75 78 80 82
+24 27 28 31 34 37 38
+47 45 42 40 38 35 33
+30 29 27 26 23 22
+13 16 17 18 19 21
+58 55 52 51 48 46 45 42
+73 72 69 66 63 62 60 59
+21 19 16 15 12 11 9 8
+70 71 74 77 80
+57 58 59 60 61 62
+39 36 33 30 29 26 24
+36 35 33 30 28 25
+51 48 46 45 43 42
+69 70 73 74 77 79 80 83
+33 35 36 38 39 40 43
+48 47 46 45 44 42
+14 15 16 19 22 25 28
+76 79 82 85 88 89 90
+55 56 58 59 62 64
+1 4 6 7 9 10 12 15
+64 61 59 58 57 54
+30 29 27 25 24 22 20
+67 65 62 59 56 54
+70 69 68 65 64 63
+93 92 89 87 85
+26 25 22 21 19 16 14 13
+30 31 34 35 38 40 41 42
+33 35 37 38 41 44 46
+91 89 86 85 83 82
+59 62 65 67 70 73 75
+62 64 65 68 69 72 73
+19 22 23 26 28 29 32
+40 37 34 33 32 29 27
+34 36 39 41 44 46
+3 4 7 10 13 15 16 19
+74 72 69 67 66 65
+78 76 75 73 72 70 67 65
+2 5 8 9 11
+8 11 14 17 19 22 25
+39 42 44 46 48 51
+36 35 34 31 30 27 25
+38 40 43 46 48 49 50
+64 66 68 71 73 76 78
+66 69 70 72 73
+64 61 60 58 55
+84 81 79 76 74
+14 17 20 21 23 25 27
+77 80 81 84 87 88 91 93
+20 17 14 12 9 6 3
+81 84 87 89 92 95
+73 72 71 70 67 64
+50 48 47 44 43 41 38
+62 64 66 69 72 74
+35 34 32 31 28
+79 78 76 74 73 72 71 70
+35 32 29 28 27 26
+63 62 60 58 56 54
+19 16 13 10 9
+80 78 75 73 71
+68 65 62 60 58 57 56
+36 39 40 43 44
+46 44 42 39 36 35 34 32
+29 31 34 37 40 42 43
+57 55 53 52 49 46
+87 84 83 82 80
+13 10 8 6 3
+92 91 90 88 85 84 83 82
+36 33 30 29 27 25 23 21
+39 38 36 34 32 30
+77 80 81 83 85 86
+79 81 82 83 85 88 90
+24 25 28 29 31 33 36 38
+87 85 83 82 80 79
+88 90 92 93 94
+17 19 20 21 22 25 26 29
+37 34 31 30 27
+23 21 19 17 16
+27 25 24 23 22 19 18 17
+13 12 9 6 4 1
+81 83 85 88 91 93
+15 14 12 10 9 7 6
+44 46 48 51 54 55
+27 25 23 22 20 18 17 16
+45 48 49 51 52 53
+23 25 27 28 30 31
+60 59 56 54 53
+70 73 75 76 78 79 80 82
+32 29 27 26 23
+7 8 9 11 14
+80 81 83 86 89 92
+85 84 82 80 77
+95 94 92 91 89
+20 17 14 12 11
+20 18 16 14 13 10 9
+26 23 21 19 18 17 15
+25 27 30 33 36 39
+58 59 62 65 68 69
+16 19 22 23 24 25 28 30
+71 70 68 67 64 62
+31 28 27 24 22
+5 8 10 11 12 14 15
+88 87 85 83 82 79 77
+52 53 56 57 59
+45 47 48 50 51 54 56
+49 51 53 55 56
+92 90 89 86 85 83 82
+84 85 88 91 94
+79 77 75 74 72 70
+67 66 63 62 61
+84 87 90 91 93
+84 83 82 79 78 76
+78 79 81 82 83 86
+17 18 19 22 23
+49 51 52 53 56 59 61
+29 28 26 23 21
+73 75 76 79 82 83 85 87
+52 54 56 58 61
+83 81 80 77 74 73
+74 76 79 82 85 88 90 91
+80 79 78 76 75 73 72 70
+59 62 65 68 71 73 75
+27 29 31 34 37 39 41 43
+12 11 8 6 5 3
+49 48 45 43 42 39 36 33
+26 25 22 21 18 17 15 12
+20 18 17 16 13
+56 54 53 50 47
+46 43 41 40 38 36 35 33
+6 7 9 11 14
+45 48 50 52 55 57 58
+35 37 39 42 44 47 50 51
+93 92 89 88 87 84 81 79
+15 17 20 22 25 28
+65 63 60 57 55 53
+84 81 80 77 76
+79 82 85 88 89
+84 85 86 88 91 93 94
+42 45 46 49 52 53 56
+16 17 20 23 24
+59 60 63 65 68 71 72
+48 49 50 51 54 55 57
+52 55 57 60 61
+42 45 48 49 52 55 57
+18 17 16 14 13
+20 23 26 28 29 32
+22 19 17 15 14 12 11
+72 74 76 78 79 80
+11 12 13 16 19
+24 27 29 32 34 37 39 40
+18 20 22 25 26
+68 70 71 74 76
+49 51 52 54 56 59 61
+29 30 33 34 36 37 39
+80 81 84 87 89
+52 55 57 59 62
+58 56 54 53 50
+28 29 32 35 36 39 40
+21 18 15 13 10 7 6 4
+79 80 82 83 86 89 92 95
+46 48 50 52 55 56 59
+41 43 44 45 47 49 50 53
+18 20 21 22 25 27 29 32
+22 24 26 27 30
+82 79 78 75 74
+86 85 82 81 78 75 73
+51 49 46 45 42 41
+85 88 89 90 93 94 95 98
+52 55 58 61 63
+60 59 57 54 52 50 47
+68 69 71 74 75 76 79 80
+39 42 44 45 47 49 52
+56 53 51 49 48 45
+78 81 84 87 90
+3 4 6 7 8 10
+25 28 31 33 36 39 40 42
+59 62 63 65 67
+93 90 88 86 85 82 80 78
+35 33 32 30 29 28 26 25
+28 30 33 36 39 41 42
+88 85 84 82 81 80 78 75
+26 25 24 23 20 19
+81 84 85 88 89 92 93 96
+31 28 27 24 23 22 20 19
+96 95 93 90 89
+69 72 74 77 80
+97 96 95 92 91 88 87 84
+86 85 84 82 80 79 77
+44 42 39 37 36 35 32 31
+70 68 66 65 62
+79 80 82 83 85 88
+28 31 32 33 34
+15 16 19 21 24
+73 75 77 78 80 83
+50 52 53 54 57 60 63
+81 79 78 75 72 70 68
+46 49 52 54 55 57
+57 56 53 50 49
+41 42 45 46 49 51 54
+86 83 81 80 79 78
+50 51 52 55 58 61
+61 64 66 69 71
+15 16 17 20 23 26 27
+56 59 60 61 64 65 68 71
+72 71 69 66 65 62
+35 36 39 41 42
+79 81 84 85 87
+72 70 69 66 65 64
+59 60 62 64 65 66 67
+28 27 26 25 24 23 21
+34 32 30 29 26 24
+14 16 19 21 23
+61 63 66 67 70 73 75
+62 64 66 69 72
+52 54 56 57 58
+67 70 72 75 78 79
+74 72 70 68 66 64 63 61
+86 84 81 79 76 75 73 71
+31 30 28 26 23 22 20
+78 79 81 82 85 88
+20 21 22 23 25 26 28 30
+12 9 7 4 1
+97 96 95 94 92 90 89 86
+51 53 55 58 59 60
+53 52 49 47 46 43
+44 43 42 39 38
+67 70 73 75 78 80 83 84
+68 66 64 61 59 56 53
+49 46 45 43 41 40 38
+70 68 67 66 65 63 61
+40 39 37 34 33 30 28 25
+16 18 20 22 23 25 28
+79 78 76 74 73 70 68
+69 67 64 61 59 57
+50 52 55 57 58 59 62
+46 49 51 54 56 58 60 62
+55 57 60 62 63 66 69
+99 97 94 93 92
+26 29 32 33 36 37 39
+13 15 18 20 22 23 25 27
+76 77 80 82 85 86
+32 33 36 39 40 41
+27 26 24 21 19
+12 11 10 9 7 6 5 2
+50 53 54 57 60 62
+23 25 28 29 31 33 34
+31 33 35 36 37 39 41 43
+48 49 51 53 54 55 58
+70 67 64 62 59 57 55
+37 38 39 41 42 44
+71 74 76 78 80 82 84 87
+61 63 65 67 68 70 72
+87 84 82 80 79
+3 5 6 8 11 13 14 17
+95 93 91 88 87 85 84
+34 37 39 42 45 46 49
+61 58 56 55 54
+17 14 11 8 6
+50 48 45 42 40 38 35
+52 51 50 47 44 42
+21 22 23 26 28 29
+26 29 31 32 33
+46 45 43 42 41 39 37 36
+85 87 89 92 94
+78 76 75 73 71 70 69 68
+59 61 63 64 66 69 70 72
+20 17 15 13 12 11
+25 27 30 31 32 34 36 37
+68 71 74 77 79 80
+73 72 69 67 64 62 60 59
+22 20 19 18 16
+49 47 45 43 40 38 36
+70 71 72 75 76 79 81
+66 67 69 70 73 75 77
+94 91 89 87 84 81 79
+45 46 47 49 52 54
+31 33 34 35 38 41 43
+21 19 18 17 14 12 9 8
+54 57 59 60 61 62 65 66
+39 42 45 47 48 51 52
+97 96 93 90 88
+38 35 34 31 28
+91 89 86 83 81 79
+77 80 82 83 86
+36 35 33 32 31 28 26 23
+37 40 41 42 44 47 48 50
+42 43 44 46 48 51 52 54
+79 81 82 84 85 86 89 91
+38 40 42 45 46 49 50
+21 19 16 15 12 11
+35 33 31 29 28 27
+42 41 40 37 35
+85 82 81 78 75 73 72
+22 25 26 28 31 34
+77 74 71 69 68 67
+71 68 67 64 61 58 57
+68 66 63 61 59
+31 32 35 36 38 39 41
+33 30 28 26 23 21
+18 15 13 11 9 6 5
+60 63 66 67 68 70 71
+38 41 43 44 45 47

2024/day03/challenge

@@ -0,0 +1,45 @@
+--- Day 3: Mull It Over ---
+
+"Our computers are having issues, so I have no idea if we have any Chief Historians in stock! You're welcome to check the warehouse, though," says the mildly flustered shopkeeper at the North Pole Toboggan Rental Shop. The Historians head out to take a look.
+
+The shopkeeper turns to you. "Any chance you can see why our computers are having issues again?"
+
+The computer appears to be trying to run a program, but its memory (your puzzle input) is corrupted. All of the instructions have been jumbled up!
+
+It seems like the goal of the program is just to multiply some numbers. It does that with instructions like mul(X,Y), where X and Y are each 1-3 digit numbers. For instance, mul(44,46) multiplies 44 by 46 to get a result of 2024. Similarly, mul(123,4) would multiply 123 by 4.
+
+However, because the program's memory has been corrupted, there are also many invalid characters that should be ignored, even if they look like part of a mul instruction. Sequences like mul(4*, mul(6,9!, ?(12,34), or mul ( 2 , 4 ) do nothing.
+
+For example, consider the following section of corrupted memory:
+
+xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))
+
+Only the four highlighted sections are real mul instructions. Adding up the result of each instruction produces 161 (2*4 + 5*5 + 11*8 + 8*5).
+
+Scan the corrupted memory for uncorrupted mul instructions. What do you get if you add up all of the results of the multiplications?
+
+Your puzzle answer was 166630675.
+--- Part Two ---
+
+As you scan through the corrupted memory, you notice that some of the conditional statements are also still intact. If you handle some of the uncorrupted conditional statements in the program, you might be able to get an even more accurate result.
+
+There are two new instructions you'll need to handle:
+
+    The do() instruction enables future mul instructions.
+    The don't() instruction disables future mul instructions.
+
+Only the most recent do() or don't() instruction applies. At the beginning of the program, mul instructions are enabled.
+
+For example:
+
+xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))
+
+This corrupted memory is similar to the example from before, but this time the mul(5,5) and mul(11,8) instructions are disabled because there is a don't() instruction before them. The other mul instructions function normally, including the one at the end that gets re-enabled by a do() instruction.
+
+This time, the sum of the results is 48 (2*4 + 8*5).
+
+Handle the new instructions; what do you get if you add up all of the results of just the enabled multiplications?
+
+Your puzzle answer was 93465710.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day03/code.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+import sys, re
+
+
+if __name__ == '__main__':
+    instr = '\n'.join([line.strip('\n') for line in open(sys.argv[1])])
+    res1, res2 = 0, 0
+    do = True
+    dos = []
+    prev = 0
+    do = re.compile(r'(don\'t|do)\(\)')
+    for d in do.finditer(instr):
+        if d.group() == 'don\'t()' and do: 
+            do = False 
+            dos.append((prev, d.start()))
+        elif d.group() == 'do()' and not do:
+            do = True
+            prev = d.start()
+    if do: dos.append((prev, len(instr)))
+
+    mul = re.compile(r'mul\((?P<d1>\d{1,3}),(?P<d2>\d{1,3})\)', re.DOTALL)
+    for m in mul.finditer(instr):
+        res1 += int(m['d1']) * int(m['d2'])
+        if sum([m.start() in range(*r) for r in dos]): res2 += int(m['d1']) * int(m['d2'])
+
+    # challenge 1
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day03/example

@@ -0,0 +1 @@
+xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))

2024/day03/example2

@@ -0,0 +1 @@
+xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))

2024/day03/input

@@ -0,0 +1,6 @@
+mul(168,87)}*:mul(911,800)(%,)where()#&&$mul(734,19)?when()why(){$:?mul(829,495)do()mul(724,312){;^mul(520,383) mul(137,485)select()-mul(700,211) <(who()who()/mul(295,600)]~<select()'$why()do()when()mul(310,255)^}where()who()(!+mul(16,916),)what()@:@#where()mul(918,822),when()~/)mul(177,722)<&]:who()where()>mul(439,650)?+$mul(349,399)mul(807,317)what()?@[%mul(674,778)!mul(104,928)~[!!mul(60,636){where()when()&@why()-+mul(742,28)select()why()'&why()@>select()mul(527,483)mul(797,855)how()mul(502,647)what() {(*'}%mul(688,600))!??,+$mul(538,127)&from(),>~&*mul(963,787)~mul(820,259)~}~how()>do()what()^<}[?{'mul(202,9)$select(795,484);from()<!mul(913,93)/{{what()#-select()how()]mul(520,288),^&what()mul(583,623)mul(657,601)>;^@what()mul(671,74)&@how(151,76)!?:{mul(933,567)/)&select()do()>+,~?>mul(627,488) *mul(437,91){!#}%?how()who()mul(741,704)select():where()mul(258,129),&why():)mul(770,13)@ from()?-!what()$mul(229,613)from() select()why()};select()mul(59,263)where()from(97,930)?where()mul(514,278)(-don't()&$[how()why(783,866)&who(589,80)#; mul(130,239)don't()mul(195,249),~>>who()mul(945,698) /}how()>mul(983,248)[~why()({from()-(how()?mul(206,469)&>~who()]mul(661,410)how()&mul(768,601)/!--select()>,%mul(455,805)(}]how();<who(735,631)why()mul(216,340))what(181,514)mul(736,427)^when()]$%where()'<;mul(754,836)*@!why()select()]mul(869,551)~mul(752,713) <(~&@#mul(124,162)why()/mul(512,273); /where()why()mul(471,915)/(where():?}mul(608,515){[@:'select()[][ mul(983,96)%where(),why(){~-+]mul(102,860):#?select()%who(105,947):who(416,728)mul(765,635)@(mul(898,549)$where(580,81){mul(497,154)>/from())mul(728,180)'(what()[mul(915,20)who()+&don't()select()^)}$!who()+>mul(481,439)- *mul(332,923)when()-why()!mul(625,335)?mul(156,134)why()*'$:mul(104,186)^?#>/mul(605,863),,?mul(161,457)!#~,#~>/mul(514how()where(),'$;'$+)mul(207,90)&>$how()mul(394,95),where()'mul(827,742)how()[from()(]:/why()$+mul(46,294)>who()who()^@[^mul(500,356){]{mul(989,398)(}: mul(300,17):how()who()%?#@why()!mul(362,556)>$mul(29,294)who()<;when()mul(108,898),#<<~-*(where()@mul(86,710),'-$&what()(mul(573,832)),?{mul(953,794)why()^what()-*,/?)mul(511,634):how()/how()'what()what()mul(709,593)]mul(721,842)(!&why()where()&mul(259,304/$[*why()+#mul(932,748)? {mul(979,591)mul(576,282)(-when():^,select()>@mul(146,41){[<#(#'*}mul(615,174)&>when()what()&(mul(914,488)[~why(267,875)mul(167,385)+<%~}@![why()mul(221,316):,;[:@(!who()mul(340,617)&*how()%mul(151,744) >},-)'?mul(414,238)mul(100,868)%%what()where()mul(467,880):mul(266,276)!@!#'who()'mul(500,629)[#^select()*+how()(mul(538,599):* [;'mul(919,315)mul(760,200) <$/$}{why()'(mul(794,683)from()**'$,}}mul(915,608)>$$mul(114,893)what()select()do():^from()??from()from()^mul(316,793)>'/when()+mul(199,368)[~mul(539,838) ^(*??%mul(162,286){mul(647,357)who()$(>what()?,why()>from()mul(239,449){select()who()mul(408,790)mul(567,879)
+when(),who()[what()mul(874,22)mul*'mul(908,653)>~)@mul(773,355)#mul(716,195) ?@who()mul(128,574)^select(),{:mul(799,387)who()-)+]select()'mul[mul(153,811)from(854,516)select()'(',#mul(760,387from()mul(434,344)@?what(),&!'mul(108,675) 'who()%>+why()mul>]%select()[mul(793,13)mul(333,332)~why()/what()mul(774,658)**mul(375,739)[)*what()what(),>::>mul(702,335)%}{-@'~who();mul(992,903)}where()$(~@)'%mul(488,891)where()*);why()what():{&why()mul(29,881)&]where()where()~*mul(886,964)}&):where()who(){?mul(60,664)why()from()< +select()[when(789,49)$mul(40,510)<how()who()mul(755,503)mul(851,686)?#;}{{from()~'do()>from()~ who()>?from(431,14)%[mul(313,439)mul(999,227)[how()']what()(%,don't()who()><{#~'where()?mul(796,988)what()$/why()#select()/#what();mul(401{~mul(949,141)when()why())/^$$}^(mul(472,738){]:+mul(372,612)mul(647,895)>&$***mul(619,883)(;^mul(864,456-}#/?mul(68,612)~,}>from()!>-when()mul(997,365)mul(524,378)where()where()/!mul(301,937) ++?^what()mul(656,303)}{}mul(953,842);select()select()~[)<mul(617,87)where()what(517,442)~{mul(412,205)-?^?from()],+mul#?%#mul(389,357)how()!$<mul(809,511)who()>do() !;!mul(344,321)from()mul(819,403)+how()where()where()<($mul(908(,>%*why()what()^mul(533,374)-,select()mul(905,803)mul(140,691)what()([mul(874,79)]?how()what()?->mul(344,908)$#&#;from()!mul(256,631){where()#@,]~*:why()mul(225,679)where()?[mul(141,585)+)@~#how()mul(933,177)((+select()mul(312,241)+mul(247,632)how()^[,&from():where()%mul(663,72)![@@when()mul(274,536)>who()@mul(269,240)mul(732,115)!%@'%mul(479,836)-why()mul(502,828)#mul(548,385))mul(312,586)/&{//+{^mul(275,705)where(377,884)$ *!who()mul(382,713)+<@(<>)[select()'don't()mul(182,291)select()]:*select()where(872,531)what()&)mul(361,941)why()/+mul(832,469),-$)mul(753,874)^when(){,@mul(865,352),+#what()mul(749,612)!?#]from(),#mul(734,31)when()^mul(992,318)mul(396,187where()mul(134,182)&<&%$[>,mul(527,215)mul(400,794)'~what()mul(427,148)where()from()<<mul(867,258)<>-mul(495,578)where()}-don't()select()%+^{]what()where()mul(730,966)%$where()'mul(507,416)from()~)how(488,343) %<%>$mul(486,368)what()why()[mul}^^{who()what()[select()'why()who()mul(214,853)from()how(301,437)^):)]how()mul(657,161))(^@select()'mul(313,702)(mul(486,323)*&;&why(){'&how()-mul(911,603)-what()%mul(519,498))select():from()mul(652,991)!!/,mul(308,418)- &#+(who())~)mul(749,786);what()(mul(731,76)<!mul(572,33)/%:;select()from()mul(509,810)~mul(861,431)>do(){&what()$+-^how()mul(214,122)mul(540,414)from()mul(640,157)select()< #:;]^mul~mul(705,467)(?[}when()>where()?mul(45,584)~when()^;mul(519,782)}#when()+[mul(670,319?>]mul(451,604):mul(646,328)when()^mul(326,180)why();who();'$mul(642,425)from();?+when()]mul(907,636)what()%;do()what()?{who()mul(974,27)>{how()(^}mul(357,294)${~[@mul(983,221)who(){(!~from()^mul(128,197)*mul(942,48)>:+]{/from()#mul(237,772)<+select()@mul(361,84);why()]!)who()}+mul(740,305)&,[>]how()mul(660,613):)from()do() select()?when()%select() (mul(835,437)why();)</? how()mul(417,353)-( !select(480,286)mul(935,409)who()/*^+$mul(48,5)>how()mul(819<%/{how(675,621)where()@(>from()mul(722,49)
++)do()%;!who()who(772,423)]$<-mul(328,361))mul(149,957))do(){#!where()>#what()(select()/mul(756,781) *-select()?why(713,643)mul(514,277)$]how()/^mul(7,203)%when()how()who()mul(389,589~]who()*>$^@mul(129,92)~;mul(759,369)how()*!&from()/when()%mul(650,562),*who()*'%when()mul(236,299) }?how()how():don't(),who()how()'why()who()what()@mul(322,510):-@:$@^mul(634,343)-what()#what()from(38,805),<+mul*where(835,107)where()&where(816,43)(%{mul(617,254)where()!^![ who()?;<mul(166,155),$*:<mul(827>/~*;why()mul(788,442))-what())!?(mul(662,916)mul(401,521)mul(234,405)+~,{>from() :{select()mul(635,416)+[~[,mul(562,550)mul(152,551)#]mul(164,957)~<what()#where()>from() mul(761$who()?--<where()+mul(795,259)[~{?<select()&:mul(229,87)mul(864,182)how()?mul(974,34),mul(627-mul(177,523);,^mul(45,82)[-!}mul(370,437)(#:];:(mul(818,270)'}^]when()how(934,258)don't()'{+*why()}mul(530,297)]^/$from()<who()*$mul(842,310)from()^/)%select())+mul(482why()select()&from(415,942)!]how()why()mul(279,984)~when()>}~'/who()when();mul(796,168)what()mul(199,983)>:]when()?why() mul(410,263) when()how()?mul(413,448)]mul(825,830)# mul$mul(261,686)@~{>{what(276,567)mul(341,638)who(){?*$[why(831,759)^ from()mul(741,711)'who()select(){mul(61,52)[what(){%don't():who()@mul(219!)?];where();' *mul(371,514)>[:mul(53,428!mul(538,853)]$#~do()@mul(200%{$$[$#$)mul(57,357)/mul(399,855)~<(*@~what()(@mul(814select():what()]~[#mul(507,982)**mul(68,893)}#mul(631,348)from()mul(205,133)mul(497,687from() !mul(728,117)[;)'@/}@{mul(678,169)who()@$@@~%how()mul(959,969)%@^&{~! ]%mul(324,123)'from()who()}^%mul(763,855)from()^when()#{ /from()#]mul(316,502)what())^<^%%mul(813,959)&why()~~-?-mul(798,375)$>{#'why()&:,why()mul(83,95)(don't()mul(798,687)when(506,624)from()(,how()^: ]>mul(149,563)why()~mul(41,612)-:?when()^/)mul(974,373)>when()?how()*mul(36,761)what(){&@)mul(390,671)when()mul(696,964,@when()@$/?~>~mul(548,987)select()what()% who();$mul(80,587)&^{+,don't()?what()*why(),( mul(124-^>how()/>'mul(155,901)?<;when()!!mul(90,13))/'^from()&[,)mul(805,998):@select()/~from()+(^/mul(823,626)%where()select()how()%&>mul(257,517))#->mul(304,899))mul(255?mul(302,286)>?@<mul(777,721)^&what() !from()/*where()mul(817,696)why()#+&who()why(351,81)}where()$mul(237,864)<&(do()^?from():*{<who()select())mul(975,616),{+where()/@@who()mul(549,977)@<)when(),mul(508+<$mul(716,515)^,-]who()#select()<+mul(118,226how()mul(543,380)(how()?select()from()@}mul(28,144);;'>mul(899,21)@mul(619,488)$->&^@from()(*-mul(266,282)/]from()@who(109,244)()mul(98,720)why()what()>;% mul(681,256)#~)]from()@&mul(517,40)@@what())mul(725,452)mul(852,71)?$mul(612,673*select()what())#mul(120,4),where()who())mul(808,259)who()'^~mul(325,215)!>select()~mul(853,581)%why()mul(652,100)%<select()##what()~mul(237,441)when()!how(753,120)^mul(890,518)from():,who(196,65)+#$ mul(664,43)}%^how()/from()[[when()mul(39,906)mul(324,714)#[#from()mul(569,489)'<who()*@mul(167,880)*select(){>^@don't()/,when()~what(),+&mul(975,420){+*when()]^how()*why()who()mul(448,331)!/when()~mul(235,190)^$}+*++{#mul(96,137):?%where()mul(511,78)};^{&:when()!don't()&when()''&#:{mul(205,318)*!where()?when()~/&from(733,701)?mul*#&#where()where()]{select()mul(474,265)from(755,678)why()!;#]'>-]mul(132,817);&)]^*what()[mul(831,118)select()<mul(181,530)%)mul,])!<>+how()how()mul(292,875)%&select()[@*mul(868,274)&@select(),{mul(427,903)/@]mul(620,307-+what()select()-where()mul(206,860)-mul(937,784):where()!+mul(347,517)#!/usr/bin/perl(select()~from()mul(730-,what()!where(360,351)what()*how(600,916)mul(929,974)
+~]#<!when()[~*<mul(132-+why()#%*~:@mul(416,703){@#';>mul(190,848)?{from() }where()<mul(527,529)-mul(209,184)?[what()when()mul(77,529)why()how()<#who(360,918)-mul(417,741)where()what(269,273)from()(mul(322,695)select()@^][don't()]mul(739,357)']when(789,549)/:&when()>mul(532,685)#+~^&]^where(947,658){mul(835,556)mul(785,197)@mul(20,129)>(%*$?,%^]mul(309,855)(!select(){[?](mul(408,217)+;who()why()-&$ ,$mul(824,38)&mul(848,553)@where()who(774,973)-[;mul(590,491)what()'/mul(625,672)!}~~%>-{]-mul(113,831)}+//>(what()mul(822,256):<*$!select()mul(743,335)how()^* (<mul(341,513)do() {,(how()*,^&mul(777,587){>^what()'{[,select(249,901)mul(795,853)@$;mul(486,10)>>?~mulwhere()<~}mul(375,790)/}when()*!mul~-select(){select()select()<]don't()''-'mul(934,731)select()';*select()&why()mul(280,932>mul(530,961)how(),-{how()&what()>(mul(285,204)who()+select()>~>?/<)mul(791,587)from();~mul(142,801),from()~>when()mul(636,737)mul(122,583)select()mul(29,534)[<}>~?;++,mul(853,461)where()&/where()>do()what()where()mul(224,748)when()(from()$%>mul(537,689)@how()from(97,626)%!mul(854,118)when(998,592)-+>how()'when()/mul(548,649)who()who()#) &@!,do()}[^[@mul(154,777)mul(96,225)when()mul(951,144)what()mul(358,785)select()+from()what()-$mul(507,770);select()where()where()mul(696,121)who()when()]&$}how()what(){mul(63,669)+*where()/why()mul}&@where()!?'@;mul(81,559)*]how(372,376)mul(602,773)+mul(511,514)) (,}mul!#%$where()from()%~?>+mul(451,596);from()mul(719,514)^who(533,943)}how()@mul(382,562)!#[,@*)>mul(234,778)&-mul(280,479){, [do()how()!&{mul(971,30)'@why()) ?:+>don't()where()%from()/*&&!mul(551,129)where()!when()@@>[$mul(266,378)&mul(354,236)where()who()mul(198,648)when()~<[what()what()mul(215,213)mul(687,432){,mul(595,927)+<why()*@how()*{%mul(764,459)>who(829,436)^+mul(424,283)@why(),mul(169,939)/[*from()> %!(mul(537,425)%^mul(352,791)*#when()when()-&;what()mul(904,80) select() how()how()mul(34,66)@%<mul(276,65)where()when()how()})mul(52,448)who();select()mul(692,130)what()${%&^%mul(444,170)[)(,<mul(297,209)%&]select(170,397)$mul(577,234),select()^:~,[*>do()mul(921,346)/#what()mul(49,901)mul(734,885)/)(:mul(553,997)(who()mul(62,853)from(535,930);where()#what()mul(457,969)&(+(*}why()mul(317,972)where()when()$do()why() why():~%:^mul(447,529){mul(612,477)how()$when()mul(66,532)>$$*mul(945+*<how(289,725) who() what()how()how()}mul(304,883)select()^':{/':'-mul(715,525)!mul(270,804)from()::['when()why()mul(93,166),-when()!mul(736,616)+;mul(531,606)<how()&[+&mul(967-^'}+-}from()mul(178,389)who()<*mul(116,273)#);#select()mul(628,521)@}where()<where()(;how(376,88)<mul(99,450)}<how()$mul(612(mul(214,455)?:mul(841,59)~~mul(162,250)^]#&>*^)who()mul(291,880)/mul(903,311)*;how()mul(58,539)]-@+&%),what()mul(501,878)*[[mul(626,427)]}how()?when()[mul(280,653)/when()]-<mul(765,466)~-<(select()}{){do()from()*where()!;mul(701,836)'~mul(529,579);!:'+@/'mul(54,282)^<'mul(792,927)&mul(470,236)who() @ ])+??mul(693,230#+~?:-^mul(814,574)from()<when()@#mul(430,705)where(),when()@*$!what()$how()mul(95,323)who()when()mul(38,704)@{where()why(),from()where()[{<mul(455,604)}where()from()~mul(719,681)mul(131why()^where(389,683)**mul(331,541)-}{mul(320,970)
+:}#mul(737,307) *?)~,]mul(740,642))><mul(666,137)why()where()where()from()why()$ mul(709when(),select()*]when()(mul(510,937)&+>where()why()mul(235,299){;select()mul(543,852)>mul(456,133)(>mul(671,153)'?*who()(mul(12,640)<{##+mul(432,266)*>)'[~>$~?mul(816,840)what()-mul(698,399)how()mul(45,603))~*what()mul(737,715){when()why()~from()mul(995,968)where()mul(262,96)^?who(){; )from()who(615,278)mulhow()mul(838,616)}from())mul(865,576))~-;how()mul(192,403)))[-$]^select(),mul(184,369)#why()*^;)(do()#,'mul(423,897);)]what()/[$]mul(867,533)select(138,395)*-how()mul+#<why()}[~{mul(925,163)<mul(798,343):mul(137,381)~/>;mul(515,882)]:(mul(364,946)&!&,how()select()- mul(111,167):~$from()^]don't()&mul(829,425)!'/how()where()]/<what()mul(521,742)mul(316,792)mul(311,104)from()<%mul(869,189)^&why()[&:mul(683,138)how()mul(533,311)from()%what()@mul(785;select()~?{}++where()mul(102,590)}&what()}(^[<:mul(997,376)'@/$;mul(25,111)~+$]^;+?mul(786,845)@why()&mul(737,79)''from(340,968) how()where()^?mul(803$select()*why()!select()*/%-mul(450,746)who()-(from()where()when(525,894)mul(110,878)-%select()$)@;mul(445)]-~~*/)&mul(205,632)$[^}select(599,536)how()how()who()]mul(952,986)who()/#*:]who()+/mul(346,355)^where() don't()@who()?+&;mul(617,393)&how()>mul(195,257)*mul(953,79);who()when()$,from()<>why()mul(529,405)from()&mul(492,793)&#*[;+;-mul(331,898)?/{+}mul(424,343)$~[mul(523,74)why();mul(772,703):;mul(17,157)! }why()/]!^mul(979,338when()$?mul(898,616)}why(359,279)+from()what())}$from()!mul(612,784)(where()mul(640,368){#!mul(69,807)]how()( #mul(739,987)'*~&%who()!}@mul(834,525)when())::$mul(122,894)%+^(who()@when()%mul>when()from()?mul(464,80)$^! !/@?@,mul-what()!!@:[mul(283,21)([how()[mul(11,617)]}where()/mul(976,268)mul(843,731)<how()why()[mul(601,412)%how()!]@*why(136,791) -mul(371,365)@~$*'~[/ mul(15,594)how(),/{#-}>'mul(676,131)where()}{(]'where()mul(459,88);(where():mul(64,747);[&$})+select()&;mul(750#[{;*&mul(458,334)?where()select()%)mul  what()?when()mul(808,879)what()*}-$+from()where()@mul(152,857)'#%where() /<:+?mul(304,149)from()!<when(865,985)mul(238,815))~!+<)@from()mul(401,975)%&mul(625>*!mul(802,11)!*select(),; )-;how()mul(199,993)/!when()^;[)mul(577,723)!?^who()+what()<mul(489,809)~what(625,812)<?;*#)how()do()!(]who()what()where()*from()+mul(705,108)(who()why(815,180)[]^[mul(821,379)&^(&<,%mul(197,678)%-what()mul(944,295)select()how()!mul(357,711))$-what()'&)'mul(114,910)}<*@-from(688,563)[mul(279,269)from()}$mul(707,287)<;*+what()*>when()mul(447,881)+'(+&@&do()mul(192]what()%/mul(463,832)mul?^*>why()where()from()what(){*mul(456,920) $where(911,93)select()+who()select()}don't()}!how()what()~+what()mul(404,558)>,>{(?{'&,mul(936,304);mul(232,989~;>]who()mul(582,897)*!mul(11,23),~>!{<who()$>mul(542,522)^;,from()(?mul(177,928)how(985,316)}who()@](-#why()mul>~why(851,863)[)!@>mul(101,448)select()+?%&select()~((mul(11,450)how()^)mul(344,639)}+;mul(343,648)^why()!where()&{/'#mul(9,810)where()-%mul(877,263)&select();where(240,275)[mul(289,282)how()&<{who()} ['do(){mul(818,421)/}$]mul(617,829)~['why()?&~)mul(741,559)mul(133,701)$]:@&mul(594,307)[',how()^{how()mul(388,657!({'mul(492,896)#@/why()why()mul(127,225)}>where()-/,^mul(219,314))mul(682,893)what()why(){(,from()(?mul(219,360)what()' ](mul(80,569)
+select(82,585)mul(693,510)%$what()from()mul(740,749){~'<]mul(281,263)when()(!?>/% +mul(116,41)-*-when(506,165)?^}mul(651,943){~,/what(){#{!mul(629,41)/mul(74,998)?mul(525,86)&how()do()+/%mul(15,103)#select(671,57)from()who()]mul(309,559)%>mul(311,459)'when()@#mul(980,750)when()+%how()how()~:mul(484,554) )+{ - :]mul(113,626)[^<%,mul(187,326)*:!]*!mul(374,45)from(),mul(41,137),^)-,#when()?who()mul(93,289)select(853,56)]^where()mul(43,349)*where()mul(406,653)from()from()*&*mul(486,350);)*~how()mul(817,387)>>when()who():mul(417,224)^!&{from()}@mul(342,365)why()^who()+~!}when()do()why()when(939,686)^)((mul(160,438)what()>mul(23,766)+]*mul(618,433[/~where()[;why()what(){mul(292,318)*$why(664,963)how(68,975)why()who(276,89)where()!why(777,555){mul(875,358)@'[#who();)mul(198,992)?:(?~where()what()how()-'mul(956,332)mul(889,561)from()((what()mul(753,443)#>? , -mul(267,527):when()+mul(225,923)>>?^mul(726,980)~when()'mul(760,283)!;why(),;when()mul(358,713)//select()]%^{why()*'mul(406,429,(: {how()!^;mul(363,272)--where()*:select()when()?when()mul(242,130);why()>:!&why()$mul(386,685)@!}>when()why()>how()how(872,684)mul(418,627)why()[{:[-%mul(946,701)(}mul(10,874)&mul(109,151)],mul(676,79:;]}),mul(206,822)mul(228,261)-how()?]+mul(295,706)/]@( how()-mul(558,819)@::!>where()*when()?}mul(709,558)*)~;?}> how()from()mul(489,495)[*where():}(*%mul(189,692)how()/where()why()(mul(895,190))]<select();'who()when(309,317)mul(204,524)from(),&# mul(563,48)what()mul(207,241)&mul(450,18)when()what()select()^]{$why(565,783): mul(422,431){,}?+how()what()where()mul(782,229)[%}:~mul(994,946)){,$*,mul(84,333)#?@^]mul(324,259)<mul(723,626)*)/select()mul(22,373)from()mul(158,952) #mul(862,250)'$#;{mul(816,365)&$who(930,819) mul(440,442)^@@mul(35,883))>{+mul(904,446)~(?-*:select():]?mul(21,770){&?/what()mul(810,761)( <{#^why()select()mul(542,583)mul(517,719)*who()]mul(229,391)^:,;where()who()[&mul(181,416)>when()( %+{mul(376,885)+}/}*what()[%when()mul(412,213)who() mul(151,478)do()+when()mul(683,117)@how()[@>(*%mul(666,434)%+mul(83,30)^}:mul(983,213)@-what()mul(36,788)';%-#+]#mul(575,6)#when()'&@who()<$ who()mul(764,292)<,where()where()mul(230,519)<<^('mul(384,769)%,what()@who()when()where()when()mul(104,361)&select()what()-!mul(523,283)do()mul(920,551)mul(589,394)$(select()?#>&*'mul(672,365)+:]@$)mul(373,982)mul(810,292)-mul(990,386)?mul(372,766)where(),]^mul(651,898)from()from(){?;select()mul(293,197)why()( [;&^~@mul(505,310)what()what()select():]-what(873,670)mul(885,505);-#{';-how(967,119)select() mul(956,774)mul(51,516)mul(756,597)^~select()how()%&from()mul(463,747)&why()who()())mul(193,948)from()when()what()why()from():select()%select();mul(143,694)(mul(448,194)@<(-where(536,660)?select()mul(280,832)select()#^}mul(296,908)where()@{> #*do(); ;how()mul(417,4)mul(939,57)&'~?-'(#do())[where()+<<where()mul(223,643):%/mul(367,601)}*}[mul(451,653)why()<when()from();(#<;mul(960,745)>%:?(}mul(975,356):,select(275,833),#?(when()&]

2024/day04/challenge

@@ -0,0 +1,75 @@
+--- Day 4: Ceres Search ---
+
+"Looks like the Chief's not here. Next!" One of The Historians pulls out a device and pushes the only button on it. After a brief flash, you recognize the interior of the Ceres monitoring station!
+
+As the search for the Chief continues, a small Elf who lives on the station tugs on your shirt; she'd like to know if you could help her with her word search (your puzzle input). She only has to find one word: XMAS.
+
+This word search allows words to be horizontal, vertical, diagonal, written backwards, or even overlapping other words. It's a little unusual, though, as you don't merely need to find one instance of XMAS - you need to find all of them. Here are a few ways XMAS might appear, where irrelevant characters have been replaced with .:
+
+..X...
+.SAMX.
+.A..A.
+XMAS.S
+.X....
+
+The actual word search will be full of letters instead. For example:
+
+MMMSXXMASM
+MSAMXMSMSA
+AMXSXMAAMM
+MSAMASMSMX
+XMASAMXAMM
+XXAMMXXAMA
+SMSMSASXSS
+SAXAMASAAA
+MAMMMXMMMM
+MXMXAXMASX
+
+In this word search, XMAS occurs a total of 18 times; here's the same word search again, but where letters not involved in any XMAS have been replaced with .:
+
+....XXMAS.
+.SAMXMS...
+...S..A...
+..A.A.MS.X
+XMASAMX.MM
+X.....XA.A
+S.S.S.S.SS
+.A.A.A.A.A
+..M.M.M.MM
+.X.X.XMASX
+
+Take a look at the little Elf's word search. How many times does XMAS appear?
+
+Your puzzle answer was 2493.
+--- Part Two ---
+
+The Elf looks quizzically at you. Did you misunderstand the assignment?
+
+Looking for the instructions, you flip over the word search to find that this isn't actually an XMAS puzzle; it's an X-MAS puzzle in which you're supposed to find two MAS in the shape of an X. One way to achieve that is like this:
+
+M.S
+.A.
+M.S
+
+Irrelevant characters have again been replaced with . in the above diagram. Within the X, each MAS can be written forwards or backwards.
+
+Here's the same example from before, but this time all of the X-MASes have been kept instead:
+
+.M.S......
+..A..MSMS.
+.M.S.MAA..
+..A.ASMSM.
+.M.S.M....
+..........
+S.S.S.S.S.
+.A.A.A.A..
+M.M.M.M.M.
+..........
+
+In this example, an X-MAS appears 9 times.
+
+Flip the word search from the instructions back over to the word search side and try again. How many times does an X-MAS appear?
+
+Your puzzle answer was 1890.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day04/code.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+
+import sys, re
+import numpy as np
+from scipy.ndimage import rotate
+from collections import defaultdict
+
+
+# copied from stackoverflow
+def groups(data, func):
+    grouping = defaultdict(list)
+    for y in range(len(data)):
+        for x in range(len(data[y])):
+            grouping[func(x, y)].append(data[y][x])
+    return list(map(grouping.get, sorted(grouping)))
+
+
+def a_cross(puzzle, x, y):
+    if puzzle[y][x] != 'A': return False
+    elif x == 0 or y == 0 or x == len(puzzle[y])-1 or y == len(puzzle)-1: return False
+    elif ((puzzle[y-1][x-1] == 'M' and puzzle[y+1][x+1] == 'S') or (puzzle[y-1][x-1] == 'S' and puzzle[y+1][x+1] == 'M')) and ((puzzle[y+1][x-1] == 'M' and puzzle[y-1][x+1] == 'S') or (puzzle[y+1][x-1] == 'S' and puzzle[y-1][x+1] == 'M')): 
+        return True
+    else: return False
+
+
+if __name__ == '__main__':
+    puzzle = [line.strip('\n') for line in open(sys.argv[1])]
+    words = re.compile(r'(?=XMAS|SAMX)')
+    res1 = len(words.findall('D'.join(puzzle)))
+    npuzzle = np.array([list(p) for p in puzzle])
+    # rows = groups(puzzle, lambda x, y: y)
+    #cols 
+    res1 += len(words.findall('.'.join(['.'.join([''.join(l) for l in groups(npuzzle, lambda x, y: x)])])))
+    #fdiag
+    res1 += len(words.findall('.'.join(['.'.join([''.join(l) for l in groups(npuzzle, lambda x, y: x + y)])])))
+    #bdiag
+    res1 += len(words.findall('.'.join(['.'.join([''.join(l) for l in groups(npuzzle, lambda x, y: x - y)])])))
+
+    res2 = 0
+    npuzzle = np.array([list(p) for p in puzzle])
+    for y in range(len(npuzzle)):
+        for x in range(len(npuzzle[y])):
+            res2 += int(a_cross(npuzzle, x, y))
+
+    # challenge 1
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day04/example

@@ -0,0 +1,10 @@
+MMMSXXMASM
+MSAMXMSMSA
+AMXSXMAAMM
+MSAMASMSMX
+XMASAMXAMM
+XXAMMXXAMA
+SMSMSASXSS
+SAXAMASAAA
+MAMMMXMMMM
+MXMXAXMASX

2024/day04/input

@@ -0,0 +1,140 @@
+SXMSMMXMASMSSSSXAMXMXAMXXAAXMAMSAMMXMAMXSAMXMXMMMMSMMXMXMASMMSMMSSSMAXXMSMSSXMASMXSSSXSMMSSSSSXMASXSAMXSMMSSMXXXXXMASXMXMSSSMMSSMSSSMMMMSSXM
+SAMAMSMSMSXAAMAAXMSXMSSSXSXMSMMSASASXSMSMSSMSSMXAAMXMASXSAAMAXASAXMASXSASMASMMSMMAMXSAAXAAXAAAASAMAXAXASAAAAMMSMMSMMMASASAMXSAAAAMASMAASMMAS
+SAMXSAAXAMMMMMMXAXSAMMAMAMXMAAXSXMASAAMSXAXAAAXSMSSSSXSAMXMMASMMMSXAMSAAXMAMMMAAMASAMXMMMSSMMMMMASMXMMXSMMSXMAAAAAAAXMASMASAMMSMMMAMMMXMAMAM
+SAMXSMSMAMAAXSXSSXSAMMAMAMASXSMSXXXMMMMSMMSMMXMSAAAMXXMXMXXMXXXASAMXMSMSMMXXAXXXMAXAMSXXAAMXSAASMMMSXAAXMAXMSMSMMSXMXMMMSXMXSXMMMMXSXSMSSMMS
+MSSXMAXMASMSSMAXMAMXMMASAXMXAMAMXMMMXMXMAMXXAXSMMMSMXMMAMMXMAMSMMMSSXSAXMSASXXSXMSSMMSAMMMSAMMMMAAAAMMMSSXMAMAAAAMMSXXAAXXSASAAAXMASAAAAMAXA
+XAXASMXSAMAMAMMMMAMASMMMMSXMSMSMSAASXSXSAMAMSMSAXSAMXAAAXMAMAMAAMAAMAMAMAMASAASAMAAXAXAMASMMSSSSSMMSAMAAMAMAMSSMMSAMMSMXXMMASMSMMSAMXMMMSMMM
+MMSMMMAMMSXSAMAASAMXMAAAXMAXMAXAMSMSAMASXSXAMASMMXAAXXXMXMMMASMSMMSSSMSMSMAMMMMAAXXMXMMMXMAAAAXAAMAMMMMASMMXXAAAAMAMMAMXMXAAMXMAAMXSASXMAXAX
+XAAAAMMSAAASXMSASASXSSMMSMMMSAMSAMXMAMAMMAMSMAMMXSXMSMSASXMSXSAMXMAXMAXXXAXXXASXMASMXSAMSSMMSXMXMMAXXASAMAASMSSMMSSMMASAASMXSAMMMSMSXSASASXS
+MSSMMSMMMMMMMMMAXAMAAXMASASASXMXMAMSAMXXSAMXMAMMXSMAAAMSMAASAMXMSXMXMAMSSMMMSASMMXXAASXMAAAMAAMSXSSSMMMSMMMSXAXXXAAXSAXAXMAASXSAMXAXXSAMXSAS
+XAAASXXAAMAAXAMSMMMXMMMMXAMAXAMXAMMSXSXMXSSXSAXXASMMMSMAMMMMAMMAMXXXMASXMAAXMAXASMMMMSAMSSMMMXMAAAMAAMAMMMSMMMSMMMSAMAXSAMXMSAXXSMMMAXAMAMMM
+MMSMSAXSSSMMMMAXAXMASAXSMSMXSAMXXXAMMMMMAMMMSMSMASXMXMMMMAXSMMSASMSSSXMASXMXMMMAXMAMSSMMMAMXXSSSSMSSMMASAMAAAAAAAAMMMXMAASAXMXXMXMASMMSMMSAS
+AXAXMAMMAXAXAMSMSMMAXMXSAXAMSAMXMMMSAAAMAMSAMXAMAXASXMASMMMMMASAMAXAAXSMMMXAAXMXMMMSAMASXAAAAAAAXAXXASASMSSSMSSXMXSXXXMXAMXXSSMMAMMAXSMAXXMA
+XSASMMMMAMMSXSAAMAASXSASXMAMMSMASAMXMXXXAXMASXXSSSMMXMASAAXAMMXXMSMMMMMAAAXSXXMSASXMASXMSAMMMMMMMMMSMMXSXXXMAXMMSMSMSMSAMASXSAAAASMMMAMMMSXM
+XSAMMAXMMMMSMSMSMSMMAMASASXMAAXXMASAXXSMSSSMMAXAAMAAXXASMMSSSSMSAMASAAXMMMMMAAAAMMASXMXMAXXXAAAMXSASAXMMMSSMXMAXSASAAAXXSAMXMSMMXMAASAMSASAX
+AMAMSXSXMASMAMAMMMAMMMXMXAMMXSSMXXMAMSAMXAAMASMMSMSASMXXAASXAAASASAMSSSSSXASMMXMASAMASMMMAMXSSXSAMXSAMSAMXAMASMMMAMSXSXXMAXAXMMSMXSMMMMASXSM
+AMMMXAMASMMMAMAMSSMMXSASXMMSAMAMAMMMMXAMMXMAAXMXXAMXXAXXMMSMSMMSAMAXXXAAAMXAXMXMAMASAAAAAAMXMMXMMMXMMMSASXMMXAAAMXMXXMMMSSMMASAAMMMMASMMMMMM
+MSSMSAAAXAASMSMSXAXMMSASAAAMASMMASAMMSMMMXXMSSSMMAMXMSMXSAMMASMMMMSSMMMMMXXSXXAMAXAMXSSMSMSAAAXMAMXAMXXMAAXAMSMSXMXMSMAMAMAMAMMMXAASAXMXXAAM
+MAAXSAMXMSMSAMXSMXMXAMAMMMXMMMXSMSASAAMAMAXXAAAMSAMAMAAMMAMSAMMAAAXAAAXAXMMMMMMMSXMMAAAAAASMSMSMAMSAMXMXSSMXAMAMMMAXAXAXXXAMASXXSSMMMSSMSSMS
+MMSMSXMAMXMMXMAMMSMMXXAMXXSSXSASASAMMXSAMSSMMSMMSMSMSASXXAMMMMSXMXSSSMSMSMAAAASMMASMMSAMMMMAMAMXXXASMMSAAAASMMAMAXSSSXSSMMASASMXAXAAAAAAAAAS
+MMAAXAMXXSAMXSSMASMAMXSXSSMASXAMMMMMXMXAMAAXXAXXSXSASAMMMSSMMASMMMXAXXAAAMMMSASAXXMAAAAXMXMAMAMMMSMMXAMMSMMAAMMXSMMAXAMAMSAMAXAMMXSMMXSSMMMS
+MSMSMMSAMXAMAMAMAXMASMMAMXMXMMSMSAMSXMSSMSSMMSXXMAMAMAMSAAAXMASASMMAMSMSMSMAMXSAMSMSMSSMSASASASAAXXXMMMMAAMSMMSAMASAMXMAMXMMXMSXSAXMAXMAMMAX
+AAXXAAXAXMAMXXAMXXMASAMSMMMSMAXMMAMMAMAMMXAMAXSMMSMSMXMMMSSMXXSAMXMAMXAAAAAMXAMMMAAXAAXASXSAXXSMSMMXMXSSMSXAAAMASMMMSXMAMAXMXXXAAXSXMASAAMAM
+SXXMMMSXMMSXMSSSMMMASXXAAAAAMAMMMSMXAMASMXAMXMASAAXMSMXMAXAAXMMMMASAMMSMSMSSMAXMXMXMMMMAMMMMMMXMXASAMAMAAXMMMMSAMMASAASASXSXSAMMMSMMXXMAMMAS
+AMSXSAMXSAMXAAAMAMSXMASXXMMSXSAAAXASMSXAMMXXAAXMXSMMAXMXMSMSMXAXSXSASAAAAXAXMAMSMSMXMMXXXAAAXXAMXSMXSASMMMXXAXSXAMMXMAMXAAAAXAAXXXMASMXSAMAM
+XMAXMASAMASXMMSMSMSASXXMASXMAMMMMSASAAAMXASXMSMSMMASMMMAMMAMASAMMASAMXSSMMMSMSXSAAAASAMXSMSSMSASMAAASXSAMAMSMMMXSSSSXSMSMMMMMXSMXMMASAAAAMXS
+SAMXSAMXSMMXMAXXXASXMXAMXSAMAMXXXMXMXMMXMMAAAAAAASAMXMSASMAMXXXAMMSMMAMAMXXAMMAMSMMMSAAMMMMAMSAAXMMMSASXMAMAAAXAXAAMAAXAXMAXSXMMSAMXMMMMXMXM
+MAXAMASXSAMXSASXMAMXSXMAMMAMMMXMMXXXSMSXSMSMMMSMMXXSAMSASXMXAMXMSAMXMXSAMSSMMMAMXSXMXMXSAMSAMXMAXMAXMMMMSSSSSMSXMMMMSXSSSSSSMXAAMXMXSASMMMMS
+SXMASMMMSAXXMASAMXXAXASMXXMMXXMSAAMMMMAMSAXAAXXXXSMMAMMAMMSMSSXAMXMXXAXAMMAMXSAMMAMSAMASAMXASMMSMSMSSXAASAAXXAAMMXMAXMAMAMXAMSSMSAAAMAAMAAAX
+MAMAMASASAMXMAMXMMMMSAMXXSSSSXAMXMMAAAASMAMSMSMSMMXXXMMMMASAAAMMMSSSMSMSMSMMMMASXAMMMMASAMSSMXAXXXMXMSMSMMMMSSMAAXMXXAXMXMSAXAAASMXXMMMSSMSS
+MMMASMMAXXAMMMSMMMAASXMMMAAAMMAMXMMMMSMSMSMXXMASAAASMMXSMASMMXAAAAAXAMAMMMAAMMMMMXSXXMASAMMXAMXMMMMAMSXAAXMAXAXSSXSMXSXSMASXMMSMSASMXSMAXXAX
+SASXSXMMMSXXMAAAASMMSASAAMMMMASMSSMSAXAXAAMMSSSMMMXSAMMMMXXAXXSSMXSMSMAXAMSMSASASAAXMAXSAMXMMMAAAAXAXXAXXMMXSAMXAASAMAAAMAMAMAMXMAMXAAMASXMM
+AMSAMXMMASAMXSSSMSMXSAMXSXXMXSAAAAAAAMAMMMSAMXAMXMXSXMAMXASXMXMAAXMXMMXSMMMXSASASMAMSXAMAMMAMSSXSSSSSMMSAAAXAMXMMMMSAMXXMASXMASAMSMMAMMXXAAA
+SXXAMXMMAXAAMAMAMXAAMAMXXMAMXXMMMMMMMMXMSAMASXMMAXMSASXXMAASMSXMSMXAXSASXSAAMXMXMASMXXXXAMAMXAXMXAXAAMAAXMMSAMMXSXXAXXMXXAXAMXSAMAAMMXMAXSMM
+ASXSMXMMSSMXMAMAMMMASAMXMSMXXSXMAXAXMXAAAASAMAASASASXMAASXMXXAAXAXSMMMXMASMXXAMXSAXXSMMSMSSXMASMMSMXMMMXXMXMAXSAMXMMMAMXSSMSMMMMSSMMMAMSMXAA
+MAMAAXXAMAMASMSSMMXMMASXMAMXMASASXSSMMSMSAMXSSMMMMAMMMMMMAASMSSMMXXXASAMXMMMSSSMMASAMAXMXAMXMSAMXMASMSSMSSSSMMMASMAAMAXAAAAXMAAAMMSXSAAAASXM
+XXMAMMMXXAMAAAAAASXMMMMMSASXMASMMXXAXXXAMXMAMMMXXMXMAMXMSMMMAAAAXSASAXXMMAXXAAAAMAMXMSMSASMMXMAMXMAMAAAAMXAAAXSMSMMSMSSSMMMMSSSMSAAMSMSMXMAA
+XXASASXASXMSSMMSMMAMASXXSAXXSAMASXSSMMMMMAMXMAMXMMAMXMAAXXXXMMXMMXAMMSSMSAMMMSMMMASAXMAMMXAXAMAMSMMXMXMMMMSMMXMAMMSMAMAXAMXMMMXAMMMXXAXMASXM
+XMAXAAXMASAAXMAXAXXMAMAAMAMXMXMAMAAAMAAMSXSSSSMASAMMSAMXMASMXSXMXMXMMAXAAAMXAXAAMXSAMMSMXSAMASAMAAAMSASASAAAXMMAMSASMMAMMMAMAXMXMSMSMSMMMXAA
+SXAXXMMXAMMSMMMMAXSMSXSAMAMXAAMSMMMMMSXMXMAXAAMASAAASASAMMMMAXMAMSAMXMMXMMMMXSSMMMSAMAMXAXAMXSXMSSMXSASAMSSSMMSMSMAMXMXMMSMSMSAMXAAXAAAMSSMM
+AMXSSMXMXMSAMASMXMMAXAMXSXSMMMXMAMMXXXSSMSMMSMMMXXMASMSASXAMXSMMMMSAAXMMMAXMAXASAASXMXXMSSMMXSAXMAMXMMMAMAMAMAAMXMAMXMSSMSAXMAMXSMSMMMMMAASX
+MAXAMXAMMMMASAXAMXMAMAMAAAMXSAMSSMAAXMASAAMMMMSSMXMAMMSAMMSSMMMSAAXXXXMASMSXMMAMMMMASMSMMAMXAXMMSAMXMXSAMXSAMSMMASASAMAAAMXMMSMMXAAXXAAMSXMM
+XSMXXSXSAXSAMXSSXMASXXMXSXXAMAXAMXXMMMMMMMSAASAXAXMXSAMAMAXXMSASMSMASMMMXAAXXMAMSASXMAAMMAMMMSXXMAMSAMXMMXMXMMXSAXXMMSSMMMMSAAASMSMSSSSMMASA
+SXSAAMMSAMMXMAMXASAMXSMMMAMSSMMSSMSMSAAMMXSMSMMXSAMAMXSAMXSMXMASAMXMMAMAMXMMXMSXSASMASMSSXMAAMXMSXMAMMAXMAMMMMXMMSMSAMXMAASMMSSMAAXXXAMAMAAS
+SASMXMAMXMAXMAXMAMXSAMXAMAMAAMAMAXAAXSMSAASXXMXAXAMAXMMAXMAXAMAXMASXSSMAXSAMXAMXMMMXMAXAASMMSSSXSAMSMSSSSSXMAMXAAAXAMASXMXSAMXMASASMMXMAMMMA
+MAMXMSSSSSSSSSSMSMMMXSAMXAMXMMASMMMSMXMXMASAMXMXSASXSMSAMSMXXXMXXASXMASAMSAMXSSSXAAXSMMMSMMAXAMASAMMAXAAXAASASXMMMSAMXSAXASMMAXMASXAXMSXSSSM
+MAMAAXAAAAXAAAMAAAAAMMASMXMASMXSMMMAAXAMXAXAMAAXSAMXAASXMAMMSAMSMXSASXXXMMAXAXAMMMSXMXMSMMMSMAMAMAMMAMMMMSMMASXASAMXXXSAMXSASMSXXMMMMMMXMAAX
+MAXXMMMMMMMMMMMSSSMSSXAAMXXMXMAMAAMMXXSSMMSAMXSAMXMMMMMXSXXASAMXMMSAMMMMSSSMXMMMASMMXAXMAXAMXXMXSAMXXAMAMXAMAMMMMMSMAMMASXSAMXMXAMAMXXXAMSMM
+SSSMMAXAXXXSMSXMAAAAMMMMXASXMSSSMMSMSMMAAASXMXMXMAXAXSSMMSMASXMAMAMSMAAAXAXAAMASMSAXXMSSMMSMMMMXAASMSSMAMSAMMSMSAMAAXXMAMMSASAMMSSSSSSSMMAMX
+XAAASXMMMAAMMSAMXMAMXMASMMSAAAAMMSAMAASMMMMMMASMSMSSXMAAAXMMMMSASASMSXSXMXMSASASXSXMSMAAAAMAAAMAMMMAAAXAMAMXAAMMASMSMXMAMAMMXAXAAAAAAAMSAAMX
+MMMMMMASMSMXAMXMAMXXMSAXAASMMMMMMSASXXMAXXASMXMAMXAMASXMMSMAMASMSXSAMXXXMMXAXMAXAMMAAMSSMMSSMMMMSMXXMSMXMXSMMSMSAMXMASMMMSSSSSMMSSMMMMMAMSMM
+ASXSMSASAAAMSSMXXSAAXMSMMMSXMXMAXSAMXMMSMSXSAXMMMMASXMASXXXAMASASMMXMAMAMSXMAXSMASASMXMAXMMMMSMSAMXSAAAASASAXAAMASXMMMAMXMAMAMMMAMMXXXXMAXXA
+SXAAXMASMMMMMAXMASMSMAMXMASASXSMMMSMMSMMASASAMSMSAAXMMXSXASMSASMMMSMMASAMAMXMAMXXMAMXSXAMMAAAAMXAMAAMMSMMASMMMSMSXMAXSAMAMAMAMASAMMAMXSMXMAX
+MMMMMMAMXXXASAMMAMAXMAMAMAXAMAXSXAXMAAAMSMXMAMAAAMMMSMAMMXMMMMSASAAMSASXSAMAMMSASMAMAMMMSSSMSSSSSMSMXMAAMXMAAXAXMASMMAMSXSXSXSMSASXXXASMSSSM
+SAXMASMMXASXMAXMSSSXMSSSMSMSMMMMMMMSSSSMMMAXAMMSMXSAAMSSSSSMSSSXMMXXMASASXSXSAAAMMMMMSMXAAAAXXMAXAMASXSSMMMSMSMSMXMMAMXMASMMXSXMXMASMMMAAAAS
+SMMMXMAASMMMXSMAXAMASAAAAXAMXSAXSAAMMAAMXXSSSSMXXAMMASXAAAAAXASAXMXMMMMMMMMXMXMSMXSAMAAMXSMMMSMAMXMASAMAXAXAAAAAAAXMAXXMAMASAMMXSAAXAAMMMXMM
+MAAXAXMMSAAMAXMMMAMXMMXMMMASXXASMMXMMMMSXXMAXMXSMASMMSMMMSMMMSMMMMMMAAAAAAXAMXXAAASASMSMMMASAMMXSMSAMAMMMMSMSMSMSMSSXSXMASAMAMAXAMXMSMXSSMAX
+XSXSSSMASXMMMMASMMXMAXXXXMSMASXMXMMSSMASMMMAMMASMAAAAXXXAXXXSXSXAAASXSSSSSMMSAMXMMSAMMAMXSAMAXXAXAXXMAMXAXAXAMXAAXXMMMAMAMXSMMSMMSMXMMSAXSXM
+MMXAAMAMXXXMXMAMMXAAASMMAXXMAMMAXXAAAMXMAMXMMMAXMSSMMSXMMMMXMASXXXMMXAMMAMXSAMSAXXXMXSAMMMAMXASMMMMMSMMSSSMSAMXXXSAAAMAMASMSXXXAXAXAAXMMMMXM
+XMASMMSAMXMXSMMSMSAXMAAXSSSMSSSMMMMSSMSSSMMSXMMSAAAAAXMAMASAMXMASMSSMSMMAMSXAMSMSMAMXMAXMMAMXMAXAMAMASAAAAMAMASAAXMAMSASMMMXMMSMMMSMSMMXMMAA
+ASAXXAMAMASAMXMAMMMMMSAMXAAAAMAAXXAMAMAAXMAMAMSSMSSMMSAXSASASAMAMAAXAAXSXSSMMMXMAMAMMSMMSSMSMXMXXXASMSMMXSMMSAMMAMAXMSAMAXMMSAAAMXXAXAXAAXAS
+MMAXMXXAXSMMXXSASXSAAXMMMMMMMSSMMMAMAMMXMMSSSMXSAAMAMXXXMXXMMMMSMMMMSSMMXXXAAAASASXMXAAAMAAAXAXXMSASXSASAAXAMXSXMMMMAMMSMMXAMXMMMMMMMSSSSSMM
+MMSMMSMXMMASAASMSAMXSXMXASXSAXXAXMASMSXAMMAAXSSMMMSMXMASMSSSSXAAAAXMAMMSSSSSMSMSXSAMSSMMSMMMSASAAMAMASAMSSMXSMSMSAASXMAAXAMSSSSSSXSAAXXMAAAX
+XAXAAMMMASAMMMMAMMMMAAMSMSASXMSMMMMAAMXXSSMMMXMAMXMMAXMASAAAXMSSXMSMASXAAMAAAXAMAMAMAAMMAXXXXAXMXMAMAMAMXXXXAAXXMSXMAMSSMMAXXAAAMAXMXXAMSMMM
+MMSMMSXAMMMMXXMMMXMMMSMAAMAMAAAXXMMXAMXXMMAMMMSXMASMSSSXAMMMMMMXAASMASMMSMSMMMASMSSMSXMMAMMMMSMMMSASASMMMAMSMMMSMMMSMMXAMXSXMMMMMMMMAMSAMXAA
+XXAAAXMSXSMSSXSAMXSAAAXXMMAMMSMSASMSAMXAXSAMAAAASMMMXMAMMSXXXSASMMMMAMAXAMXMAMXAXAXAXMMMXMAAAMAAAXASASXAMAMAMAAAAAAAMXMAMAXASASXAASMASAAMSSM
+XSSSXSAXASAAXXMASASMSMSSXSXSXAMAAAASAMSMMSXSMSSMMMSSSSMXAAXMAMMSMAMASXSSXSXSSSMSMMSAMXSAMSSSSSMMSSMMAMMXXAXASMMXSMSMSASAMASMMXSSSXSSXSAMXAMA
+XMAAAXAMMMMXSASAMAXXXMXMAMAMXXSMSXAMAAMAMXMSAMXAXSXAAMXMMSSMAMXXXAXAAAXMASXAAXAAAXMXMAMAMAAAAAMMXXXAAMMMSSSMSXSAAAAMSMSXMAXAMAMMMMMMMMAXMASM
+MMMMMMXMXAXAXAMSSXMSSMAMAMAMMMXMMMXSMMMAMXAMSMMSMAMMMMAASAXXAMXMXSSMMMMMAMMMMMMXSXMAMXMMMSMXMASMMSMXMAXMAMAAXAAMMMMXSAMXMSSMMAMAAXAMXXXMMAMM
+AAXMASAMXXSMXMAMXAMXASMSXSXSXXAAXSMXASXSSSSMAXXMMMASMSASMXXMXSXSAMXMASAXMAMSAAXSMMSASMXXAMXXXXAXAAXMXSMMSSMMMSMSSXXAMAMMMXAXSASXXSAMXXSAMAAX
+SMXXAMASXMXXSXSXSMMSMMMMMMXMAMMSASAMXMAXAAXSSXSMAXAMXMMAMMSSXSAMSSXSASXMAMXXXXXAAXSASAAMSMSMMSMMSMMSAMXAAAASXMAAXAMXXSMMSMMMMASAASMSAMSAMXSM
+XAAMXSMMAXSAMXMASMXXAAAXSSSMXSAMXXMAMMMMMMMAXAXSMMAMAMSASAXMASMSAMXSAMMSMXMXSSSSXMXMMMMMMAMAAAXMMXAMASMMSSMMAMMMSMXMSMAAXAAAMXMMMMXMAMSAMAXM
+AMSSMAMSXMMAAMMAXMXMSSSMAAAAAXXSAMMSXAAAAMSAMSMSXMAXAXSAMASMMMXMAMAMAMMAMMMMAAMXXMXXMMSXMAMSSMSAMXXXAMXMAXASXMAMAMASASMMSSSSSMXXMMMSSMXAMXMX
+SXAAMAMMMXSMMMSAMXSMAAMMMMMMMMMXAMXMSSSSSXMASMAMMMMXMMMXMASASMMMSMXMAMXAMAAMMSMMAMAMMAAAMSMMAAXMMSSMASMMAMMMMXAXASMSASMXAMAMAAMXXMASAMSXXXXX
+MMSSMXSXXAXASASASASMMXMMXSXASASXSMXXAMXAAXSXMMSMSASASXSAMMSMMXMAXASXSSSSSSXSAMASXSASMMXSMAASMMSXAAAMXMASXSAAAXSXMSXSAMXASMAMXSAMXMXSAMAMMMMS
+MAMXMASMMSSMMASMMASXSMSAASMXSXMAAMMMSSMSMMAMXXAXSASASASMSMMXSAMXSAAAAMXMAMAMASAXASAMXMAXMXMMAAXMMSSMXXXAASMMSMMAXXAMXSXMXSMSXMMMMSASAMMAAAAA
+MASAMASXAAAAMAMMMSMAXAMMXMAXXMMSMMAAMXXAXMASXSXMMMMAMAMMAXXXMAMAMXMMMMAMAMMSMMASMMSMAXMMAMSXMMSMMAXAMXMMMMXXMASMMMXMAAAXAXXMMMAXAAAMXMXSSSSM
+SASXMASMSMSMMMSXSAMXMSMSMSXAAMMMXSMMSASMXMAXMAXSAMMSMXMSASMMSSMMSSMMMSXSASXSASAMXAMSXMXMSMSASXAASMMMAAXXXXXXMAMMASAMXMXMMSXMAMSMSMSSMXXMAMAX
+MASAMXSMMXXAMXSMSASAMXAAASMMMMAMMMXSMAMMAMMXSAMXAMAMAMAMAXAAAAMXAXAAMMMXMXXXAMXSASMMSAXXMASAMSSXMAXMSXSXXMASMAMSSSXSSSMAAMXMAXXAXAMAAASXMSSM
+SAMXXMSASASASAMAXSMAMMMMSMAXMSMSAMSAMXMXAMMMMASMSMMSAMMMSSMMSSMMSSSMSXAXSSSMAMAMAMAAXSMXMXMXMXMAMMMXAASMSAMXMAMMAMAXAAXMMMXXMXMAMXMMSMMAXAMX
+MAXMAXSAMASXMAXAXXXAXXAMAMMMMMXSASMMSMSSMXAASAMMMAAXASXAAMMMAAMXAAAAXMMSMAXSAMASASAMMXXMMMSMMAXAMXSMSXSAXXXMXMXMAMXMXMMXASMAMSMMMAXXXXSSMSSS
+SAMASMMXMAMMAMXSSMSMXSASASMSXSAMXMMAMMXAASMXMXSXSMMSMMMMXMAMXAMMMSMMMMMAMMMSXMXMXSASAXMAMAAAMMSSXXMAXAMXMSMSAAMSSMAMMAXSAXSAMXAAMMXMXMXAAAAA
+MASMMAAXMASAMXAMAAAMXXAMASMSAMXXXMMASMSMMMMAAAMMMMMAMXSSXSXSASAMXAAAAASMMXXMASASMSAMXSASMSSSMXAMXSMSMMMSXAAMMMMAAMASMMMAMMSMSMSMSSSXAMSMMMSM
+SAMXSMMXMASASMSSSSSMMMMMXSAMSMMMSSSMMMAAMASMMAXAAASASXAXAAASAMXSSSSMSAMXSXAASAMXAMXMAMXMXXMAMMASASAAAAAXSMSMSAMXSMXMAAXMMXXXSAAAAAMXXXAMXMAX
+MMSASAXXMASAAAAAAAMAAAXMAMXMMSAASASAXXMXSASXXMAMSXSASMSMMMMMAMMMAMXXMMXMAXMXXMXMSMAMMMAMXMMMXSSMAXXAXMSMMXXAMASAAAASXMMXMAMAMSMMMXMASMMSSSMS
+SMXAXMMSMASMMMMSMSSSSSSMASXMAMMXSAMXMMSAMXSMMMSAAXMXMAMSXAXAMXMMMMSXSSMSAMSASXMAXSMSSSMSMSAXASAMXMXSAMXAXAMXSAMMSMXAMXSAMAMXXAXASXMMSAXXAAAA
+MMMSSMAXAMSAXMXXAAAAAAAMASMSMSMAMAMXMAMASMMXSAMMAMXAMSMSSMXXMAXAXXXAAAXMAMMASXMAXAXAXAAAAMASMSXSXMAMMXSXMSSMMXMAXMMXMASAXXSMSXXXSAAXSXMMSMMM
+SXAMAMXMMXMASMMMSMMMSMMMMMAAAAMASAMMXAMSMXAAMAMXAASMSMMMSMASMMSASMMMMMMMAMMXMAMXMMMSSSMSXSAMXMASMMMSMAMMMXAMXAMXSMSXMASMMSMMXSSMSMMMMAAXMXXX
+AMSSMMXMSAMXMAAAAXXAAXXSXMSMSMSASASXMSSXAMMMSAMSMMMMAAAAMXXSAAMAMAAXMXSXXSMMSSMAAXAMXAAAAMXMAMXMAMXAMASASXXMSXSMAXSMMMSAMXAAAXMASAMASXMMMMAM
+MXAMXMAMAASXSSMMSSMSSSMXAXMAMMMAXXMAAMAMXMAXXMMMXAAXSSMSXMAMMMMXMSMMMASXAMXMAAXSMMSSSMMMSMMMXXSSMMSXMASAMXAXAASMSMMAAAMXMSXMASMAMAMMSMMAMAAX
+XMAMAAXXAXAMXAASXMAAMAMXMMXMXSMSMXMMMMASXMASXSAMMSSMXXAAXMAMMMMMMAMXMASMSMAMSSMXAAXXMAXAAXMASMMAXASMMMMXMSMMMSMAXASXMMSAXMAMSAMXSSMAXAXAMSSS
+AXSSSSMMMMMXSXMMMMMMMAMMXSXMMXAMMSSMMSAMXMASMMAXXAMXMMSMXSAXAAAAMASAMMSAAXXMAAXSMMSASAMSSXSASASXMMSAMXASMAMXMAMMMXMAAASAMXSMXXXMAMMSMXXAMAMX
+SXMAAMAASASXSAXSAAAXMMXSAMASAMXMAAAAAMAMXMAMAXAMAMXSAXAAMSAMSSSSSMSASAMMMSMXMAMXAXXAMXMAAAMASXMAAASAMMMMSMSSSMSMSSMMMMMSAMXAMXMMAXAAAMXSMMSS
+AXMSMMMMSASASMMMSASMXSAMASAMMSXMMSSMMSXMXMMSSMMMXSAXSXMSMMXMAAMMAMXMMAMAXAMMSMSAMXMAMXMMSMMAMXSMMMSAMXMAMXAAAAXAAXASAMXAMAMAMSXMMMMSSXAMXXXA
+MXAMASAAMMMMMMXXAMMAAMMMMMXSXMASAAMAMSXSAAAAAAXXAMXSMXXMXMMMMMMSSMSMSMSMSMSAASAXXAAAMAXAMASXSASXMASMMXMSSMMMMMMMMXXXAAMMSSSXMXSAASAAMMMSAMAM
+XMAXAMMXMAAAAXMMMSMMMMAAXMASAAMMMXXSMSASMSMSSMMMSSSXMAMMAMMMSAMMXAXAAAAAMAMMSMMSXSMSSSMMSAMMSASMSAMXXAXMAMASXMSAXXSMSMXXAAXMAAXXAMMMMMXAAMAX
+MSAMSMMSSSSSXSAAASASAXSXSMAXMMMXXXAXAMAMAXXMAAXAAXMASXMSSMSASMSMMMMSMXMSMAXXAAXMXXAAMAAAMMSAMAMXMASXSMMSAMASAASMSMSAAMXMMMMSMSSSSMSAASMSSSXS
+XMAMMAXXMAMAXXMMXSAMAMMASMSSXXMASMAMAMSMMMASMMMMXMSAMXMAXMMASXAMASAMXXSXXMMMXSMMAMMMMSMMSASXMMMMSSMMMMAXXMXSMMMAAAMSMSAMAMAAXXAAMAMSMMAMXMAM
+XXAMSAMMMSMMMMSMMMAMXMMAMAXMASMASMMMMMXAXXMMMMAXMAMASXMSSXMMMMMSAMMMSMSAXSASXXMMAXMAMMXMSAXXSAAMXMSASXSSSSMSAAMXMSMXXSMSAMSASMAMMAMMSMSMSMSM
+SSMMXMAXAMAAASAAAXAMXSMMMXMMASMMMAXMMAXXMMSAMSAXSASAMXAAXXSAMXXMMXAXAAMAMMASAAXSAMSASMMMMSMXSSSSMMXSXAMAAMASMMSSMXASASASXMAXSAMMSAXMAXAAAAAM
+XAMAMMSMSSSMXAXSMSMSXSAXMMMSASAMSAMXMASMAXSAMMAMSAMXSXSMSASASMMASMMSMSMXMMAMMSMMAMMASAAAAMMAMXMXAMMXMMMMMMMSMXMASMXMAMMMSMSXMAMAXXMSMSMSMMMX
+SAMXSMAMXAAXSMMMAAXXASXMAAAMMMAMXMMMMAMMSMMXMXMXMSMMXAAXXMSAMXMAMAASXXMASMXMAAXXSMMSMMSMSMMASXMXAMXMASAXXMAMMXSAMMSMXMXAAXMASMMSSXMAXAAAXMSS
+SAMXMMAXMSMMAXASMMSMXMMSSMSSXSSMMSAMMASAAXXAMASAAAMMMMMXXXMXXAMASMMMMMMASXSMSMXAMAXAAXXMXXSASAASMMMSAMMSMMMSAAMAMXASASMXSAMMMAAMAMSAMMSMSAAX
+SMXASXSSMXXAXMXXAAXMAMXMAMAMXAXAASASXMSMMASMSASMSMMXSAMXMASMSMSXXMAXMSMASXXXMASMSXMMXMMMMAMAXMMMMAXMAMXAAMXMMXMAMXMSXXAXMXMMSMMMSAMXXXMASMSM
+SMMXSAMXAMXSSMXSMMMSAMMSMMASMMMMMSMMXMSASMAAMAMMXAXAMAAMSAMAAAXAMMMMAAMMMMXAMXMXAMXSAXAAAXMASMSMSSMSAMSMSXXXSMSSSSXMMSMMMSMXAMXXMMXSAAMAMXAA
+XXAMMXMMXMAMAXMAXSASXSAMAMSSMAAAASMASMSAMXXMAMMXSMMMSMXXMAXSMSMSMASXSMSAAXMXMAXXXSMSASMMMSAXXAAAMMAMMXAAMMMMMAXAAMXMAAAMAAMXAMXXXXASMSMAAXXS
+AXSXXAXAAMASAMMSXMASXMAMSMAMXSSXXSMASXMXMASXSSMXXAAAAXMXXXMMSMAXMASAAXSMXSASXMXSMMAMAMXAASXMMSMMSMSMMSMXMAXAAXMMMMAMSSSMMSSSSMMMSMMSAMMSSSMM
+SAMXSMSSXSXSXMXAMMAMMMXXXAMXAMAMSMMMSASXMXSAMXMASMMSSSMSAMXMAMSMSXMXMMXXASMXAMMXAMSMAMXMMSAXAAASAAMAMXSAAMSXMSSXAMXMMAAMXAAMMAAXMASMMMAAAAXM
+MAXAAAAXMMMMAXXMSMASMMMAMAXMAMAMAAMXXAMAXXMMMSMAXAAXAAAXMMAMMSXMASAMXAXMASXXSMASXMMMASMMMMMMXXSMMXXAMASXSXXXASAMXMMAMXMXMMSMSSMMSXMAAMMSSMMS
+SSMMMSMSMAAXAMXMAXASAAXXSXMXMSSSSSMMSSMMMMSMSAMMSMAMMMMMXXAMXMXXMASXXXSAMXMSMMMXMAXMAXMASXSAMSAMXSSXMAMSAMXAMMAMAMSXMMSXXXMMXAXASXSXMSAMAAXA
+MXAAAAXSMSSSMSXMAMSSMSAAMMMMXAAAAXAXAMASMXAXSAMXAXXXXASMMMXSAAXMXXMMMMAXXSXAXXMASMMMSSSMSMMAXSAMXXASAMXMMXAMASXMAXASMASXMMMXSMMMSASAXMMSSMSM
+MSXMSMXMXXMAMMASXSXMAMMXMAAASMSMMMSMMSAXASXMXMMSXSMMSMSAXAASMMMMSMMAAXMMMMMMSAMXXMASAAAAXAMXMMAMXSAMXMMAMMSSMXASMSAAMASASMMASAMAMAMMXMAMMAXX
+MAAMAMSMSSSMMSAMMMAMXMXAMSSXSXAAXXXAMMMSXXMASMMSAXXAAXSAMSMXAXSAXASMXSAAXMAXMXSXMASMMSMMMSMMMXMMMXAMXMAAMAAMXMMMMMXMAMSAMAMMSAMMMMAXAMAXMSMM
+MMSMASXAAMAXMMMSASMMXMSXXAXXMXMXMMXMMAAXXAMXMAASASXSXXMAMXASMMMXXXAAXSMMSSMSAMMMMSXSAXMMAXAXXASASMAXSMSSSMMSSSMXAXASXMMAMXSXSAMXMSMSMSAXSAAA
+XAAXXMMMMSSMXAXXMAAASMMSMMSSMSSMASASXMXSXXMXSMMMAMXAMSSMMXMAMAMAMMMXMSAMXAASXSAAMXAMXSAMASAMSMSASXMMXAAMAAXAAAXSXSASXMMAMMAASXMAXAAAXAASXMXS
+MSSSSXMXAAAMSMSMMSMMMAAAXAXAAAXAXSASAMXSXSAMXAXMXMXMMXASXXSMSAMAXXAXSXMSSMMMASXSSMSMMSMAMMXMMAMAMMSMMMMSSMMMMMMXMSAMAMSMSAMXMASMSMSMSMSMXXSM
+AXAAXMASMXAMAAAXMAAXSMMMMASMMMSMAMAMASXMASXXXXXMASXXSSMMMAMAXXXMXMMSXAXMASMMAMMMMAMMMMXMMMMSMAMAMAAMAAMMAMMSAXXAMMAMSMAAMXXAMXMXMAXAMXAAAMAM
+SMMMMAAXMASMMSMSSSSXSMAMMMMAMXMMAMAMMSAMAMMMMSMSMSXMAMAAMAMMMSMXAAMXXAMSMMXMAXAAMAMMAMAAAAMXSMXMMSSSMSMXAMASASXSSSMMASXSSSSSSSMASMMAMSMSMMMS
+XAAXSMMSSXMAAXAAAXMAMMSAAASAMMAXXMASAXXMASAAXXMAAXXSSMSMSMSAXMAMSMSAXMMASMASXSSSSMXSASXSSMSAMXMSXMAXAAXSSMMSAMAMMMSMASXMAAXXAMSASASXMXAXXXXS
+XSXXAMAMXAMMMMSMMMXMAAXMSMSMSMSXSMXMMSXMXSASXMSMSMMMMAAAAAXXSMSMAAMMMXSASMXSMAMAMAXMASXAXAXMMAMAAMAMMMMMMAMSMMAMAAMMAMAMMAMMXMMXSAMXSMMMXSAS
+MXMMMSMMMSMSAMMAXAMXMXSAXXMMAMXASAAAAAAMXSXMAXSXAMSAMSMMMSMMMAMAMXMMAMMAXMXXAAMAMAXMAMMMMSMMSXSMSMAXAXSXSAMXASXSMSSMMSXMXMMMAMMMXMMMSAAAMMAM
+AXAAXAAAAAXSASXSMSAAXMMMMASXXXMAMSSMMXSMAMAMXMSAMXAXMXXMAMXAMMMAXAXMSSSSSMXASXMSMSAMAMAAAAAXXXXAMMSMMMAASMXSAMXXXMXAASAMXMASAMAMMXXXSSMSMMXM
+MMMMMSSMXXXMMMAXAXSMMMAAMAMXMASAMXMASAMMAXSASXSXXAMMMMSAMXSMSASMSSSMAXAAAASXMSXMAMMSASXMSSSMMMMMMAXASAMXMAASXSMMMMMMMXASASASMSMSAMSMXXMAMSAM
+XMXSAXMAMSMSSMMMSMAXASASXMXSAAXAMSAAMAMMAMXAMAMMMSXASAMAMMSAMASXAMAMMSMMMMMAAMMMAMXMMSXAXXXAAAAAMAMAMXSAMXMXAXMAAAMAXMXMAMASAAXXXAMMAMMSXSAS
+XAAAXSAASAAAMASAMXSMXSAXASXMMMMAMAMSSSMMSMMAMXMASAAASXSAMMMSMAMMSSSMAAXAXXSMMMASAMAMXSMMMXSSSSSMSAMAMXSAMMXMAMXMMMSASAAMXMAMMMSMMMASXSAMXSSM
+XMAMMMXMSMMMSAMMSXMSMMMSAMXMAMSAMASXAXMAXAMXMAMMMMMMMASASMAMMXMXAMAMSSSMSMMXXSMSASASAMAMMAMMMAAASMMSSMXXMXAASMMSAMXAMXAMXMAMSASAMXAXXMAXASMS
+SSMMSXMXXXSXMXXMAMMASAAMAMAMAXMAMXSMAMMASXMSSXSASXSXXXMMAMAMSMSMMSMMAAXXAAASMMMSASAMMSAMMASAMMMMMAAMAXSMXXASXAASAMMMMXMXMXSAMASASMAMXMSMMMAM
+MAAASASXMMAAXSMSAMMAXXMMAXXMSXSAMMMMMXMASAXXAASAMAMXMSMXAMAXAAXMXAXMMMMSSSMSAAXMAMXMMSAXSASASXMAMMMSAMXAMSMMMMMSAMAMAMSAMXXMMXMAMMMAAAAAXMAM
+XSMMMXMAAASMMSAMAXMSMSMSMSAXAASASAAAXXMASMSMMMMMMAMASASMSXSAMXMXSSSXSAAAMXMMMMSMAMSMASAMMXSXMASXSAXMXMAXMAAXXSAMXSASAMMASASXSSMMMMXSMSSSXSSS
+MXASXSSSMXAMAMXMAMSMAAAAASMMMXMASMSMSMXXSAMXAXMASXSMSAMXXAMXMASAAAAASMSXMASXMASXAAAMMXMXXAMASAMXSAMSASASXXMMXMASXMMSASXSMASAXSXXAXXXMAMXAXAM
+MSAMAAAAXSMXSXXXXXAAMMMMMMSSMMMXMMMMMMMMMXMSMSSMAMAMMMMAMMMXMAMMXMMMMXMAMAXAMASXSSSSXSXSMXSAMASXMAMMXMASMMSAXSAMMSMSAMXAMMMMMMSSSSMMSMMXSMSA
+MMMMMMMMMASAMXAMXSMSSXXXMMMMAASASAXAAAMAAAXAAMAMMSSMAAMXSASMMSSMXMSXMSSSMSSMMXSMMAAMAAAXXAMAMXMAMMMXSMMMAXSAMSASAAMMAMXMASAXAAAXXAMAAAXMXAXA
+XAXXAXXXXAMMXSMAMXAAAMAMAAAMSMSASMSSSSSMSSSMSMXSAMXSXSAASMSAMAAXXMASMAAAAXAMAASMMMMMMMSMMSMSMSSSMAAMXAAXSMMAMXAMMMMXAMXXASXSMSXSSXMMXMMAXMXX
+SMSMXMMMMMSXMASXAMMMSAXMSSSXMXMAMXMMMMAAAAAAXMXXAMAMMMMXSXSAMSSMXSASMAXMMMAXMMSAMXXAXAAAXAAMAMAASMSSSXMXMAMSMMXMMSSSMSXMASMXMAAMMMSSMMSSMMSM
+AXAXAXAAAMAAAMXSMMSAXXXMAMMMXXMXMAAAAMAMMSMMMMMSMMAMXAXXMAMAMXXAAMASXMSSXSAMMXMMMMXMMSSSMMSMAMXMASAAAXSASMMMAXSAAAAAAMXSAMXMMMMMAAAAAAAAAAAA
+MSMMMSXMXXAXMSAXMASMXSMMASMMXXMAMXXSSSMSXXXXAAAAXSAMSSSMMXMSAMXMMMAMAMAMXSXMMASXMMAMMXMAMXMXXMAXMMMSMMMAXMASAMSAMMSMMMAMASMMMSMSMMXSMMXMMSSS
+MAXAMSMSSXSAAMASMXSAASXSASAAAXSSMSMMAAAXXXXSSMXSMSMMMXAXAMXXASXMAMASAMAXMMAMSMSAMSSSMASAMMMXMXXSAMAAAXXXMMXMXMXAMXAAAMASAAAMXAAXAXXMXSMSMAAX
+SASXAXASAAMXMASMXAMMMSAMXSMMXXAAASMMSMMMMXXMAXAMMXMAXSMMMMMSXMASASMXAMMMAMAMSAMXMAMAXASXSAMXMAXMAMSSSMMXMXXMXMSSMXMMASAXMSXMMMMMSMXXAXAAAMMM
+MASXMMMMMMMAMSMMXXSMAMAMMXMAXMMMMMAMASXAMXSSSMMSASXSXMMXAAXSMSAMXMASXMSASMASMAMAMXSAMXSMXASAMSMSAMAMAASAMSXMAAAXMASMASAXMMMMASAMAASMMMSMSAMS
+MAMMXAXAXXSAMAAAAMXMASAMSAMXSSXAAAMMAMSASAMXAAAAXMAMXAASXSMXAMSSXMASAASAMSXMMAMXSAMXSXSASXMASAASMMAMSAMASAASMSMXSASMAMAMAAMSASASMSXAAAXSXMSX
+MMSASMSMSASXSSSMMAMSXSASMXMXSAMSSSXMXXSXMXSSSMMSSMXMAMASAAMMXMMSXMSSMMMSMXXMAXSAMXXSAMXXSSSSMMXMXSSMXMSMMMXMMAMXMXSMASMSMXMMASMMXMMSMSSMMSSX

2024/day05/challenge

@@ -0,0 +1,97 @@
+--- Day 5: Print Queue ---
+
+Satisfied with their search on Ceres, the squadron of scholars suggests subsequently scanning the stationery stacks of sub-basement 17.
+
+The North Pole printing department is busier than ever this close to Christmas, and while The Historians continue their search of this historically significant facility, an Elf operating a very familiar printer beckons you over.
+
+The Elf must recognize you, because they waste no time explaining that the new sleigh launch safety manual updates won't print correctly. Failure to update the safety manuals would be dire indeed, so you offer your services.
+
+Safety protocols clearly indicate that new pages for the safety manuals must be printed in a very specific order. The notation X|Y means that if both page number X and page number Y are to be produced as part of an update, page number X must be printed at some point before page number Y.
+
+The Elf has for you both the page ordering rules and the pages to produce in each update (your puzzle input), but can't figure out whether each update has the pages in the right order.
+
+For example:
+
+47|53
+97|13
+97|61
+97|47
+75|29
+61|13
+75|53
+29|13
+97|29
+53|29
+61|53
+97|53
+61|29
+47|13
+75|47
+97|75
+47|61
+75|61
+47|29
+75|13
+53|13
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+75,97,47,61,53
+61,13,29
+97,13,75,29,47
+
+The first section specifies the page ordering rules, one per line. The first rule, 47|53, means that if an update includes both page number 47 and page number 53, then page number 47 must be printed at some point before page number 53. (47 doesn't necessarily need to be immediately before 53; other pages are allowed to be between them.)
+
+The second section specifies the page numbers of each update. Because most safety manuals are different, the pages needed in the updates are different too. The first update, 75,47,61,53,29, means that the update consists of page numbers 75, 47, 61, 53, and 29.
+
+To get the printers going as soon as possible, start by identifying which updates are already in the right order.
+
+In the above example, the first update (75,47,61,53,29) is in the right order:
+
+    75 is correctly first because there are rules that put each other page after it: 75|47, 75|61, 75|53, and 75|29.
+    47 is correctly second because 75 must be before it (75|47) and every other page must be after it according to 47|61, 47|53, and 47|29.
+    61 is correctly in the middle because 75 and 47 are before it (75|61 and 47|61) and 53 and 29 are after it (61|53 and 61|29).
+    53 is correctly fourth because it is before page number 29 (53|29).
+    29 is the only page left and so is correctly last.
+
+Because the first update does not include some page numbers, the ordering rules involving those missing page numbers are ignored.
+
+The second and third updates are also in the correct order according to the rules. Like the first update, they also do not include every page number, and so only some of the ordering rules apply - within each update, the ordering rules that involve missing page numbers are not used.
+
+The fourth update, 75,97,47,61,53, is not in the correct order: it would print 75 before 97, which violates the rule 97|75.
+
+The fifth update, 61,13,29, is also not in the correct order, since it breaks the rule 29|13.
+
+The last update, 97,13,75,29,47, is not in the correct order due to breaking several rules.
+
+For some reason, the Elves also need to know the middle page number of each update being printed. Because you are currently only printing the correctly-ordered updates, you will need to find the middle page number of each correctly-ordered update. In the above example, the correctly-ordered updates are:
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+
+These have middle page numbers of 61, 53, and 29 respectively. Adding these page numbers together gives 143.
+
+Of course, you'll need to be careful: the actual list of page ordering rules is bigger and more complicated than the above example.
+
+Determine which updates are already in the correct order. What do you get if you add up the middle page number from those correctly-ordered updates?
+
+Your puzzle answer was 5948.
+--- Part Two ---
+
+While the Elves get to work printing the correctly-ordered updates, you have a little time to fix the rest of them.
+
+For each of the incorrectly-ordered updates, use the page ordering rules to put the page numbers in the right order. For the above example, here are the three incorrectly-ordered updates and their correct orderings:
+
+    75,97,47,61,53 becomes 97,75,47,61,53.
+    61,13,29 becomes 61,29,13.
+    97,13,75,29,47 becomes 97,75,47,29,13.
+
+After taking only the incorrectly-ordered updates and ordering them correctly, their middle page numbers are 47, 29, and 47. Adding these together produces 123.
+
+Find the updates which are not in the correct order. What do you get if you add up the middle page numbers after correctly ordering just those updates?
+
+Your puzzle answer was 3062.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day05/code.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+
+import sys
+from functools import cmp_to_key
+
+
+if __name__ == '__main__':
+    lines = [line.strip('\n') for line in open(sys.argv[1])]
+    rules = [tuple([int(y) for y in x.split('|')]) for x in lines[:lines.index('')]]
+    updates = [[int(x) for x in line.split(',')] for line in lines[lines.index('')+1:]]
+    
+    def compare(a,b):
+        for rule in rules:
+            if a in rule and b in rule:
+                return -1 if a == rule[0] else 1
+        return 0
+
+    res1, res2 = 0, 0
+    for update in updates:
+        correct = True
+        for i, u in enumerate(update):
+            for u2 in update[i+1:]:
+                if compare(u,u2) == 1:
+                    correct = False
+                    break
+            if not correct:
+                update.sort(key=cmp_to_key(compare))
+                res2 += update[int(len(update)/2)]
+                break
+        if correct: res1 += update[int(len(update)/2)]
+
+    # challenge 1
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day05/example

@@ -0,0 +1,28 @@
+47|53
+97|13
+97|61
+97|47
+75|29
+61|13
+75|53
+29|13
+97|29
+53|29
+61|53
+97|53
+61|29
+47|13
+75|47
+97|75
+47|61
+75|61
+47|29
+75|13
+53|13
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+75,97,47,61,53
+61,13,29
+97,13,75,29,47

2024/day06/challenge

@@ -0,0 +1,195 @@
+--- Day 6: Guard Gallivant ---
+
+The Historians use their fancy device again, this time to whisk you all away to the North Pole prototype suit manufacturing lab... in the year 1518! It turns out that having direct access to history is very convenient for a group of historians.
+
+You still have to be careful of time paradoxes, and so it will be important to avoid anyone from 1518 while The Historians search for the Chief. Unfortunately, a single guard is patrolling this part of the lab.
+
+Maybe you can work out where the guard will go ahead of time so that The Historians can search safely?
+
+You start by making a map (your puzzle input) of the situation. For example:
+
+....#.....
+.........#
+..........
+..#.......
+.......#..
+..........
+.#..^.....
+........#.
+#.........
+......#...
+
+The map shows the current position of the guard with ^ (to indicate the guard is currently facing up from the perspective of the map). Any obstructions - crates, desks, alchemical reactors, etc. - are shown as #.
+
+Lab guards in 1518 follow a very strict patrol protocol which involves repeatedly following these steps:
+
+    If there is something directly in front of you, turn right 90 degrees.
+    Otherwise, take a step forward.
+
+Following the above protocol, the guard moves up several times until she reaches an obstacle (in this case, a pile of failed suit prototypes):
+
+....#.....
+....^....#
+..........
+..#.......
+.......#..
+..........
+.#........
+........#.
+#.........
+......#...
+
+Because there is now an obstacle in front of the guard, she turns right before continuing straight in her new facing direction:
+
+....#.....
+........>#
+..........
+..#.......
+.......#..
+..........
+.#........
+........#.
+#.........
+......#...
+
+Reaching another obstacle (a spool of several very long polymers), she turns right again and continues downward:
+
+....#.....
+.........#
+..........
+..#.......
+.......#..
+..........
+.#......v.
+........#.
+#.........
+......#...
+
+This process continues for a while, but the guard eventually leaves the mapped area (after walking past a tank of universal solvent):
+
+....#.....
+.........#
+..........
+..#.......
+.......#..
+..........
+.#........
+........#.
+#.........
+......#v..
+
+By predicting the guard's route, you can determine which specific positions in the lab will be in the patrol path. Including the guard's starting position, the positions visited by the guard before leaving the area are marked with an X:
+
+....#.....
+....XXXXX#
+....X...X.
+..#.X...X.
+..XXXXX#X.
+..X.X.X.X.
+.#XXXXXXX.
+.XXXXXXX#.
+#XXXXXXX..
+......#X..
+
+In this example, the guard will visit 41 distinct positions on your map.
+
+Predict the path of the guard. How many distinct positions will the guard visit before leaving the mapped area?
+
+Your puzzle answer was 5212.
+--- Part Two ---
+
+While The Historians begin working around the guard's patrol route, you borrow their fancy device and step outside the lab. From the safety of a supply closet, you time travel through the last few months and record the nightly status of the lab's guard post on the walls of the closet.
+
+Returning after what seems like only a few seconds to The Historians, they explain that the guard's patrol area is simply too large for them to safely search the lab without getting caught.
+
+Fortunately, they are pretty sure that adding a single new obstruction won't cause a time paradox. They'd like to place the new obstruction in such a way that the guard will get stuck in a loop, making the rest of the lab safe to search.
+
+To have the lowest chance of creating a time paradox, The Historians would like to know all of the possible positions for such an obstruction. The new obstruction can't be placed at the guard's starting position - the guard is there right now and would notice.
+
+In the above example, there are only 6 different positions where a new obstruction would cause the guard to get stuck in a loop. The diagrams of these six situations use O to mark the new obstruction, | to show a position where the guard moves up/down, - to show a position where the guard moves left/right, and + to show a position where the guard moves both up/down and left/right.
+
+Option one, put a printing press next to the guard's starting position:
+
+....#.....
+....+---+#
+....|...|.
+..#.|...|.
+....|..#|.
+....|...|.
+.#.O^---+.
+........#.
+#.........
+......#...
+
+Option two, put a stack of failed suit prototypes in the bottom right quadrant of the mapped area:
+
+....#.....
+....+---+#
+....|...|.
+..#.|...|.
+..+-+-+#|.
+..|.|.|.|.
+.#+-^-+-+.
+......O.#.
+#.........
+......#...
+
+Option three, put a crate of chimney-squeeze prototype fabric next to the standing desk in the bottom right quadrant:
+
+....#.....
+....+---+#
+....|...|.
+..#.|...|.
+..+-+-+#|.
+..|.|.|.|.
+.#+-^-+-+.
+.+----+O#.
+#+----+...
+......#...
+
+Option four, put an alchemical retroencabulator near the bottom left corner:
+
+....#.....
+....+---+#
+....|...|.
+..#.|...|.
+..+-+-+#|.
+..|.|.|.|.
+.#+-^-+-+.
+..|...|.#.
+#O+---+...
+......#...
+
+Option five, put the alchemical retroencabulator a bit to the right instead:
+
+....#.....
+....+---+#
+....|...|.
+..#.|...|.
+..+-+-+#|.
+..|.|.|.|.
+.#+-^-+-+.
+....|.|.#.
+#..O+-+...
+......#...
+
+Option six, put a tank of sovereign glue right next to the tank of universal solvent:
+
+....#.....
+....+---+#
+....|...|.
+..#.|...|.
+..+-+-+#|.
+..|.|.|.|.
+.#+-^-+-+.
+.+----++#.
+#+----++..
+......#O..
+
+It doesn't really matter what you choose to use as an obstacle so long as you and The Historians can put it into position without the guard noticing. The important thing is having enough options that you can find one that minimizes time paradoxes, and in this example, there are 6 different positions you could choose.
+
+You need to get the guard stuck in a loop by adding a single new obstruction. How many different positions could you choose for this obstruction?
+
+Your puzzle answer was 1767.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day06/code.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+
+import sys
+from copy import deepcopy
+import numpy as np
+
+
+def show(maps):
+    st = ''
+    for line in maps:
+        print(''.join(line))
+
+
+def find_guard(current):
+    move = (0,0)
+    for y in range(0, len(current)):
+        for x, field in enumerate(current[y]):
+            if field == '.' or field == '#' or field == 'X': continue
+            elif field == '^': move = np.array((0, -1))
+            elif field == '>': move = np.array((1, 0))
+            elif field == 'v': move = np.array((0, 1))
+            elif field == '<': move = np.array((-1, 0))
+            guard = np.array((x, y))
+            return(guard, move, field)
+
+
+def guard(m, guard, move):
+    next = {(0,-1): '>', (1,0): 'v', (0,1): '<', (-1,0): '^'}
+    nextm = {(0,-1): (1,0), (1,0): (0,1), (0,1): (-1, 0), (-1,0): (0,-1)}
+    current = m
+
+    while (0 <= guard[0] + move[0] < len(m[0]) and 0 <= guard[1] + move[1] < len(m)):
+        gx, gy = guard
+        guard = guard + move
+        x, y = guard
+        if m[y][x] == '#':
+            current[gy][gx] = next[tuple(move)]
+            return current, True, np.array((gx, gy)), np.array(nextm[tuple(move)])
+        else:
+            current[gy][gx] = 'X'
+    current[guard[1]][guard[0]] = 'X'
+    return current, False, np.array((guard[0], guard[1])), np.array(nextm[tuple(move)])
+
+
+def test_loop(m, x, y, g, move, o):
+    current = deepcopy(m)
+    current[y][x] = '#'
+    positions = set([])
+    positions.add((g[0], g[1], o))
+    running = True
+    while running:
+        current, running, g, move = guard(current, g, move)
+        o = current[g[1]][g[0]]
+        if (g[0], g[1], o) in positions: 
+            return True
+        positions.add((g[0], g[1], o))
+    return False
+
+
+if __name__ == '__main__':
+    maps = [list(line.strip('\n')) for line in open(sys.argv[1])]
+    sguard, smove, start = find_guard(maps)
+
+    # challenge 1
+    running = True
+    current = deepcopy(maps)
+    g, m = sguard, smove
+    while running:
+        current, running, g, m = guard(current, g, m)
+    
+    res1 = sum([m.count('X') for m in current])
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    res2 = 0
+    for y in range(0, len(current)):
+        for x, field in enumerate(current[y]):
+            if field == '#' or field == '.': continue
+            res2 += test_loop(maps, x, y, sguard, smove, start)
+    print(f"challenge 2:\n{res2}")
+

2024/day06/example

@@ -0,0 +1,10 @@
+....#.....
+.........#
+..........
+..#.......
+.......#..
+..........
+.#..^.....
+........#.
+#.........
+......#...

2024/day06/input

@@ -0,0 +1,130 @@
+................#.................#.#...........................#.#..................#............................................
+..........#................#...........#...................#.#....................................................................
+....#......#......#............#.#........#..........#.......#.......#...#........#..........#.........................#..........
+..................#............#.....##...............#..#.....................#...........#......................................
+#.........#.............................................................#........#............#........#.....#...#...........#....
+.....#...#......#..................................................#........#..................#......#.......................#...
+#.................................................#......................#......#...................................#.............
+...#.#...#.....................................#.......................#.........#..................................#....#........
+..............................................#..............#...#...........##..........................#.......#............#...
+........#.#.......#.................##.......................#..........#...........................#...#.........................
+.................#..............................#.................#............#....#.....#.......................................
+.................................................................#......#............#.#.#..................#.....................
+.#..........#......#...#.......#..........................#....................#.#.............................#..................
+...............#.....##.......#..#...###......#......................#.................................#.#......#..#..............
+#.....................#......................................#..........#...............#........#...............#...#.#..........
+.......................................#..................#.........................#.............................................
+.......................#...............................................................#........................#...........#.....
+......#....#..........................................................................................#..........#................
+........#.......................................#..........................#.............##.........#............#.#.........#....
+......#........#........................................................#..........................#..............................
+....................#.................................................#.....................#......#..#...#....................#..
+...........#....................##.....#...#............#...#......................................#.....#.......#.........#....#.
+#..............#.................#......#..................#...................#......#...........#...............................
+.......#.......#.........................................#.....#..#.................................................#..........#..
+..#..................#.......................#..#..#...#..........................#.........#...##......#..........#.#..#.........
+..#.........#....................#...........................#....................#..........................#................#..#
+......#.....................................................#..#.......#.............#...................#......................#.
+.....#..................................................................#...#.....................#......................#.#......
+......#..............#...................................#.......................#...................................#...##.......
+...........#..........#....................................................................#........................#.............
+#.......................................#..........................#........#......#......................##......................
+.............#...#..........#......#..........#.#......................................................................#..........
+........................................................#....#...#......##..........................#..........#..................
+.#...#.....#..........#....#...........................................#........#....................................#............
+....#....................................##.......#...........................................#.......#...........................
+...........#.............#........................................................#...#................#........#.................
+.....#.#........................................#....................#.........#..................................................
+.........#............#..............................#...#..............#...........................#...............#.....#.......
+......................#........................................#.#..........#...#..#......................#.......................
+##...........#..............#......#....................#..........................#.......................#.......#.......#......
+....#..#.........................................................#.....#..#.........................................#.....#.......
+....#......##................#......................................#.......................................#..................#..
+..............................#............................#..................#.......#.......#..................#...#............
+......................................................#............................#..............................................
+.......#.............................#......#.................................#...................................................
+..................................................................................................................#...............
+.......................#.....#...........##........................................#..............................#...............
+..........................#................................................................#..................#...................
+..........................#..................#........#..............#.#..#...................##..................................
+..................#............................................................................................#..................
+.......................#..........#...##................#.........................................................................
+...............#.....................................#............................................#...............................
+....#..................................................................................#........#.................................
+..#................#.....................................................................#...#....................................
+..........#.............#.........#......#................#......#.........#........#.......................#.....................
+..........................................................................#.................................#.....#....#.#........
+....#..........#......................................#......................................................#.......#....#.....#.
+.....#...............................#............................#........................................................#......
+.............................................................................#.......................#....................#..#....
+................#.............................................................#...................................................
+.....#................#.......#....................#............#.......#.....#.................................#.................
+...........................................................................................................#.#....................
+.....#...............................................#...................................................................#..#.....
+................#..............................#.............#.#..............................................................#...
+..#............#...................#..................................................................#...............#...#....#..
+..........#...............#...............#............................................#......#...##........#..#..................
+......#..###..........................................................................................#................#..........
+..........#........#.....#.......................#.........................................#.#........#.#.........................
+.....#............................................................#.....#..........................#..............................
+...............................................................#..............#........................................#..........
+.................................................#....#...#....................................#..#........................#......
+.................#..........#......#......................#.......#...................#.#.........................................
+.#............................................................................#..............#..............................#..#..
+..#........#...#..........#.................#...#...................................................#...#............#............
+...........#.......#..#...............................................................................#...........................
+.#.#..#...........##...................#...................................#...........#...............................#..........
+......................................................................#............#.....................................#...#....
+....#............#.#.#................#............#....#...#......#....................................................#.........
+.......................................................................................#.....................................#....
+.......................................#..................#........#................................................#.............
+.........................................#.....#..........#.......##..................................#................#..........
+..............#.............#............#..........................................................#.............................
+.#...................#...#..........................................................#........#........#..........................#
+..#..............................#.....................................#.................#.............#...........#..............
+.................................#........................#.#....#......#....................#....................................
+.#..................................................#.....#............................#..........#..................#.......#....
+.....................#.......................^............#...#...#..............#................#...............................
+.........#....................................#....................#...........#...........#..............#...................#...
+............................#...........#....................#.............#.......#.......................#...#....#.............
+............#.................#...........#..................................................................#............#.......
+...........#....................#.................................................#......#.#....................#.................
+..............................................................#..........#........#....#.........#................................
+...............#.........#......#..........#.#.............................................................................#....#.
+...............##...##..........................................................................................#.................
+..........................#.#...........................#......................#...............#..................................
+.....#...#..................#...........#....#.........#............................#.............................................
+.........................................................................................#...................#...#................
+............#.....................#...........#..................................................................#................
+.#.............................#............................#..........#......##...................................#.#............
+............#.........................................#...............................................#.#....#....................
+.........................................................#..#.#...............#......#....#........#..........................#...
+............................#..#.................#................................................................#...............
+............................#.........................................................................#....#..#............#..#...
+....#........#....#....#..#..............................#...#......................#.......................#............#........
+..#...............#............................................................................................................#..
+#.......................#...#............#..................................................#.........................#...........
+.....#.................#..#.............................................#...................................................##....
+...............#....................................#................#.........................#.#...........................#.#..
+.................#....#....#..............#....#.#....#...............#......................#...............#..................#.
+...........#...............................................................................#....#.................#...............
+...............#............................................###.#.#.#........#...................................#....#...........
+................#.................#........#............#..............#.....................#.............#......................
+....................................#.....................................................#....#..................................
+..#..#.............#......#.#..................#........................................#..........#...#..........................
+...............#........................#...............................#.............#...................#..#....#...............
+......#...........................#..............................................#..............................#...............#.
+...........#..............#................#....#..........#................#.......#..............#.........#.................#..
+......#....................................................................................................#......................
+...........#.............#...............#..........#....#.#...##..................#....................#.........................
+.......................................................#.#.....................................#..................#.......#.......
+...............#...............#...........................................................................#..................#...
+...............#......#.........#..................#.............................#..............................#.................
+...............#..........#..#.......#.............#............................#.#............................#..................
+..........#................................#..#...................................................................................
+..#................#............#........#...................................#...............##.................##....#.......#...
+..#.....................................................................#.............................................#.#.........
+#...#...#.......................##............#..............#.........#......................#........#.#........................
+..............................#......#.......#.........#...#..#.......................................................#.#.........
+.#..................#.#................................#..........#.......#..........................#............................
+...............#.....................#...#..........................................#..........#......#...........................

2024/day07/challenge

@@ -0,0 +1,54 @@
+--- Day 7: Bridge Repair ---
+
+The Historians take you to a familiar rope bridge over a river in the middle of a jungle. The Chief isn't on this side of the bridge, though; maybe he's on the other side?
+
+When you go to cross the bridge, you notice a group of engineers trying to repair it. (Apparently, it breaks pretty frequently.) You won't be able to cross until it's fixed.
+
+You ask how long it'll take; the engineers tell you that it only needs final calibrations, but some young elephants were playing nearby and stole all the operators from their calibration equations! They could finish the calibrations if only someone could determine which test values could possibly be produced by placing any combination of operators into their calibration equations (your puzzle input).
+
+For example:
+
+190: 10 19
+3267: 81 40 27
+83: 17 5
+156: 15 6
+7290: 6 8 6 15
+161011: 16 10 13
+192: 17 8 14
+21037: 9 7 18 13
+292: 11 6 16 20
+
+Each line represents a single equation. The test value appears before the colon on each line; it is your job to determine whether the remaining numbers can be combined with operators to produce the test value.
+
+Operators are always evaluated left-to-right, not according to precedence rules. Furthermore, numbers in the equations cannot be rearranged. Glancing into the jungle, you can see elephants holding two different types of operators: add (+) and multiply (*).
+
+Only three of the above equations can be made true by inserting operators:
+
+    190: 10 19 has only one position that accepts an operator: between 10 and 19. Choosing + would give 29, but choosing * would give the test value (10 * 19 = 190).
+    3267: 81 40 27 has two positions for operators. Of the four possible configurations of the operators, two cause the right side to match the test value: 81 + 40 * 27 and 81 * 40 + 27 both equal 3267 (when evaluated left-to-right)!
+    292: 11 6 16 20 can be solved in exactly one way: 11 + 6 * 16 + 20.
+
+The engineers just need the total calibration result, which is the sum of the test values from just the equations that could possibly be true. In the above example, the sum of the test values for the three equations listed above is 3749.
+
+Determine which equations could possibly be true. What is their total calibration result?
+
+Your puzzle answer was 4998764814652.
+--- Part Two ---
+
+The engineers seem concerned; the total calibration result you gave them is nowhere close to being within safety tolerances. Just then, you spot your mistake: some well-hidden elephants are holding a third type of operator.
+
+The concatenation operator (||) combines the digits from its left and right inputs into a single number. For example, 12 || 345 would become 12345. All operators are still evaluated left-to-right.
+
+Now, apart from the three equations that could be made true using only addition and multiplication, the above example has three more equations that can be made true by inserting operators:
+
+    156: 15 6 can be made true through a single concatenation: 15 || 6 = 156.
+    7290: 6 8 6 15 can be made true using 6 * 8 || 6 * 15.
+    192: 17 8 14 can be made true using 17 || 8 + 14.
+
+Adding up all six test values (the three that could be made before using only + and * plus the new three that can now be made by also using ||) produces the new total calibration result of 11387.
+
+Using your new knowledge of elephant hiding spots, determine which equations could possibly be true. What is their total calibration result?
+
+Your puzzle answer was 37598910447546.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day07/code.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def maths(nums, sec=False):
+    if len(nums) == 2:
+        yield nums[0] * nums[1]
+        yield nums[0] + nums[1] 
+        if sec: yield int(str(nums[0]) + str(nums[1]))
+    else:
+        yield from maths([nums[0] * nums[1]] + nums[2:], sec)
+        yield from maths([nums[0] + nums[1]] + nums[2:], sec)
+        if sec: yield from maths([int(str(nums[0]) + str(nums[1]))] + nums[2:], sec)
+
+
+if __name__ == '__main__':
+    lines = [line.strip('\n') for line in open(sys.argv[1])]
+    res1, res2 = 0, 0
+    for line in lines:
+        test, nums = line.split(': ')
+        nums = [int(n) for n in nums.split(' ')]
+        if int(test) in maths(nums): res1 += int(test)
+        if int(test) in maths(nums, True): res2 += int(test)
+
+    # challenge 1
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day07/example

@@ -0,0 +1,9 @@
+190: 10 19
+3267: 81 40 27
+83: 17 5
+156: 15 6
+7290: 6 8 6 15
+161011: 16 10 13
+192: 17 8 14
+21037: 9 7 18 13
+292: 11 6 16 20

2024/day07/input

@@ -0,0 +1,850 @@
+426048: 425 608 69 88 1 282
+1234: 8 53 21 2 611 1 538
+3493064: 42 823 101 932 966
+7851123: 81 52 937 7 9
+109137611815: 9 4 9 1 9 5 13 97 18 1 4
+143516213: 2 906 6 5 12 22 578 3 3
+629453: 7 492 3 28 6 6 9 104
+5423661: 5 2 8 8 91 4 6 7 3 40 8 6
+18682395: 93 37 3 1 431 765 2
+556488358421: 794 98 33 6 917 7
+14604120: 89 13 65 703 17
+51347: 24 9 908 8 9 3 6 36 41 6
+1200264: 1 324 69 614 9 34 52
+84467: 99 1 694 50 64
+832680: 3 58 68 45 3
+13238: 4 3 58 9 652
+1505251: 3 24 97 1 29 669 5
+28869324: 99 749 1 46 74
+125890: 6 894 7 6 87 9 2
+265251: 8 9 8 87 251
+928664914: 4 7 6 8 664 8 2 9 1
+103228624: 7 2 73 7 94 91 95 26
+5765376: 442 85 4 41 8 742 8 4 8
+101551004: 2 78 991 38 75 8 4
+11531: 4 42 589 122 1
+230639: 88 6 3 722 3 9 1
+533796498: 66 80 3 2 101 4 5 2 501
+8494148: 32 35 79 2 8 3 30 2 8
+222246692: 23 41 13 94 970 689
+9841934: 2 998 419 815 5 809
+2186556: 51 9 9 660 4 2 9 8 69 7 3
+11207789126: 1 9 425 1 68 5 9 2 293 9
+33355203: 7 199 5 84 119 57
+60424: 989 61 79 8 8
+651253: 3 4 904 8 2 8 72 87 493
+2099106644: 277 842 9 624 22
+29145931: 3 6 15 3 7 9 70 6 1 1 6 5
+63140: 8 79 61 77 82
+720845730: 9 3 43 1 53 45 650 81
+3030: 45 57 85 280 5 94
+64316066: 7 6 7 422 14 953 37 4 2
+31898201: 77 74 3 622 3 797
+99024982725: 48 77 1 3 47 8 1 30 846
+3086415: 5 139 1 6 1 8 2 24 2 3 6 9
+1604915280: 2 7 652 74 321 7 18 4
+1040: 316 22 7 3 4
+792201: 748 7 22 488 99 493 4
+1449102: 23 525 6 4 4 5 82
+6672: 8 1 563 7 9 593 863 1 4
+641235: 18 5 76 3 87 8 8 93 15
+836: 399 2 31 7
+2589888404878: 4 8 94 21 41 40 4 8 77
+79158297957: 221 570 58 29 795 6
+94656: 64 547 254 223 87
+158670130: 2 9 3 4 32 2 645 2 6 5
+1172900: 5 624 9 5 3 69 38
+18570144924: 6 3 570 144 926
+11809188: 63 26 801 77 7 9 90
+17569711116: 9 9 2 2 156 793 3 109 4
+72864: 8 2 3 1 5 3 99 8 4 72
+30090677155977: 38 89 11 5 217 41 9 79
+54186: 5 418 6
+536456640: 1 53 273 27 3 1 35 52
+1324: 568 47 2 45 5 2 40
+255466537: 98 49 133 4 82 56
+108593: 440 931 5 635 54
+274562: 18 4 88 12 3
+2310: 168 125 6 551 1
+158226796: 4 2 1 71 56 18 67
+227860: 632 36 2 68 5
+254276307: 211 927 13 62 57 90
+969151: 96 75 1 79 6 608 1 856
+1381920960: 329 7 7 6 4 3 5 51 5 4 3 8
+57750433: 466 22 1 43 6 1 131
+2039463: 8 532 4 2 2 4 3 59 245 1
+924: 4 2 42 57 2 23
+984: 9 5 1 3 4
+3490: 32 9 8 5 7 7 18
+764789: 47 91 3 83 341 2 942 4
+8761312983: 1 5 1 645 2 56 981
+49375245: 46 16 94 4 67
+1371731088: 258 80 58 98 119 1 6
+1691074: 3 653 36 8 2 4 61 153
+237984: 3 60 942 4 84 514
+8487: 3 836 6 3 7
+1302665: 8 327 850 4 8 848 637
+338504789434: 9 7 96 4 27 58 1 7 7 431
+4375: 5 320 13 87 62
+39114592: 24 74 32 3 53 53 8 58 9
+55211: 1 2 5 261 3 6 6 3 873 6 5
+3930310: 6 727 89 883 77
+105416741: 8 6 2 7 830 2 7 81 29 72
+1864306: 752 37 67 22 76
+10308245: 460 6 22 56 243
+8724688: 61 143 1 688
+802716549428: 81 991 6 5 494 30
+4542460: 5 11 52 818 924
+3187936924: 8 9 54 879 356
+63545: 1 459 7 429 71
+117919: 9 76 202 28 91 1
+3743973: 74 82 5 41 5 269
+861952: 57 558 68 7 2
+3334911: 668 16 39 8 255
+66798536: 27 9 931 6 92 65 3 3
+8653262: 4 82 5 326 2
+658062508: 5 97 94 2 5 6 9 3 55 6 7
+22128516: 111 222 898
+1200278: 40 5 6 269 1 8
+8492254: 465 206 452 28 74 6
+3976640: 97 49 2 8 340
+6598260668: 7 20 3 459 9 9 9 66 8
+349711968: 699 417 1 4 1 9 50 4 4 8
+4360998090: 46 474 98 40 5 9 586 2
+38968452095: 4 8 59 12 7 172 6 592
+7435934408: 521 8 34 8 32 2 2 2 7 79
+3601746: 772 4 711 1 61 7
+1037835487: 2 33 58 143 836 7
+5238563720270: 5 238 5 5 4 9 720 27 2 5
+73195290: 1 5 3 442 4 46 2 7 74 9
+39219: 7 612 3 676 2 9 5 58 3 3
+171333389699: 63 45 681 1 9 868 3 96
+5938: 5 554 315 59 8
+26921: 93 28 3 36 843
+462492: 370 38 563 73 443
+372492502: 9 1 521 5 407
+252499564: 6 1 676 72 5 91 736 44
+9089304: 8 405 786 1 28
+22290929687: 18 8 255 512 849
+496884960: 62 9 691 5 3 52 2 418 1
+52469758: 7 21 96 244 80
+1915494: 72 667 81 32 1 5
+9240: 10 4 9 8 48 21
+1229174: 39 965 1 6 16 2 676 73
+63520233: 629 6 20 20 2 31
+40053664: 520 36 298 72 207
+31513519: 5 63 13 52 1
+73259497328: 105 380 5 4 81 92 2 82
+380149: 5 2 9 59 84 52
+3532752: 75 6 40 8 7 9 1 4 7 7 48
+735865836: 2 63 65 3 220 42 58
+1036899: 1 972 63 89 6
+119723575: 885 89 2 8 95 775
+3394585738: 1 14 571 49 3 218 264
+43184: 9 47 91 47 18 728
+49179361: 3 2 358 1 27 7 8 5 1 35 1
+60589: 51 9 55 8 31
+3853: 376 9 454 6 9
+97218628: 727 238 7 1 5 3 562 67
+573: 3 18 8 47 306
+2673281: 37 17 850 5 31
+2519097323: 4 4 5 97 433 8 9 95 142
+6282472: 46 1 691 942 3 472
+1997842: 25 474 46 4 4
+21463827009: 6 23 2 74 68 7 1 540 5 6
+52876: 55 96 7 3 3
+5458: 97 56 11 8 8
+306: 4 93 5 1 3
+2246440404358: 35 2 97 944 68 53 358
+2156122429948: 627 6 8 625 3 796 3 1 9
+705471450: 257 448 47 1 450
+12086441200083: 60 4 322 5 3 8 5 5 20 86
+95185977895: 98 5 36 209 966
+66643: 1 3 7 1 6 43
+243331: 233 9 57 6 756
+12661228256: 590 33 4 6 7 5 4 774 8 4
+1100: 141 1 952 1 5
+10510801045: 69 2 2 9 86 5 9 1 76 28 3
+9888464534: 77 6 246 98 7 74 967 5
+361718875114: 2 97 4 725 12 1 5 186 6
+106512316: 40 7 2 8 449 818 536
+7588010: 64 694 772 1 291
+991: 23 4 7 1
+417: 6 45 7 75 65
+15920852: 55 93 8 8 3 3 5 8 5 7 8 9
+699: 4 8 55 43 589
+35097279829: 4 6 2 2 7 9 58 9 5 7 982 9
+108684: 5 6 2 62 283 1 6 4 9 2 1 6
+35276: 28 575 4 57 677
+8895075: 5 175 18 8 8 171
+40618: 7 219 38 7 558 54 46
+55909321: 4 4 4 6 3 2 41 705 8 3
+176390408: 496 6 61 6 8 3 64 5 2 5
+407788355: 40 778 7 603 3 747
+102608197: 81 5 348 5 7 26 1 4 237
+8020532: 9 9 9 1 969 8 4 5 8 884
+2581035: 66 5 388 83 7
+802185122: 561 993 4 360
+3277848705: 9 6 53 9 95 6 7 11 7 6
+134464957445: 1 493 1 9 495 74 44
+229748861160: 67 46 3 205 234 518
+2940111322: 37 12 917 589 22
+18670960793: 9 6 5 3 9 8 261 3 1 46 4
+1142150721: 5 16 55 5 212 5 5 2 18 3
+22196443505: 815 786 45 77 4 1
+573211: 2 377 7 24 18 9
+4843: 3 6 9 44 4 82 8
+302249666485: 3 194 57 134 54 717
+662063: 5 3 2 1 624
+132572: 6 8 36 82 57 2
+3864582: 2 3 24 7 582
+1690: 102 691 4 128 765
+1209: 19 8 7 7 96
+126089845: 7 5 8 5 98 736 3 7 9 1 7 6
+46487320: 7 1 664 7 249 71
+39486: 46 405 1 87 160
+2736552: 3 28 8 83 7 28 537
+2172301065: 63 91 618 3 55
+523522: 93 1 67 362 522
+986428764: 985 978 446 4 722 43
+12315880: 9 29 96 8 470
+3984391: 39 843 92
+5689708: 5 4 5 7 7 576 6 157 6 19
+64505661: 64 1 505 397 262
+227515138: 227 5 1 513 5
+215361445: 3 83 63 820 93 86 2 46
+34003007060: 651 993 2 526 60
+16267: 920 7 1 2 834 6 58 69
+267374268991: 6 89 73 9 8 826 8 71 59
+112166154: 10 2 93 5 66 155
+135: 9 1 5 42 43
+11248: 70 1 423 8
+2911500: 7 1 379 10 647
+65618: 984 65 686 971 1
+1423917: 23 24 26 9 18 1 3 99
+1436633024645: 2 84 134 9 2 9 9 8 79 8 2
+280912: 935 3 3 62 52
+102593598: 442 2 326 89 3 4 1 7 75
+38611: 3 9 503 9 6 7
+36060: 5 8 1 16 4 601
+28487: 73 691 6 37
+721930973: 72 18 830 479 70
+36324778803: 800 100 3 2 26 454
+70492231245: 571 990 211 5 591
+801607886: 2 79 33 888 80 7 886
+15442400: 28 69 999 3 72 157 8
+354682: 8 40 1 3 5 5 4 8 3 18 9 1
+11718044: 9 180 31 20 43
+2292878: 7 56 82 229 425
+8686510: 37 390 2 64 1 9 291 4 3
+47239: 2 77 52 4 9 9
+23755253: 2 3 1 14 707 19 10 22 1
+20814560: 68 8 44 536 1 3 2 4 2 2
+431195040: 3 579 696 74 1
+29632103424: 32 66 6 7 6 62 898
+3417: 8 81 2 28 869
+10513496180: 211 3 56 7 2 6 7 135 47
+4575903869: 45 6 2 3 9 1 903 8 6 9
+481562: 2 15 946 50 5 9 3
+23919714428: 27 8 335 3 2 6 39 4 2 6
+7227024325: 393 870 603 211 22
+113705615: 16 7 76 94 561 4
+36627744: 31 879 122 467 76
+9682305217682: 3 1 3 8 5 9 739 1 1 835 1
+1883: 19 215 8 1 14
+310865765704: 4 5 93 47 8 3 6 8 5 703 4
+65640: 2 3 9 5 671 1 89 9 3 9 3
+34615688: 8 581 1 9 1 6 5 699 4 90
+2874960: 136 2 372 936 55
+125692: 11 4 89 28 2
+21607840833966: 9 9 950 1 75 96 871 39
+23335608: 45 75 54 7 51
+6234: 20 18 819 73 6 654
+250181: 92 8 4 338 50 7 4
+38566354: 9 7 120 611 37
+62704469: 2 8 9 71 5 66 44 5 6 10
+385850: 5 8 8 7 2 8 63 6 3 678 3 2
+115032285: 8 150 96 7 913 15 21
+24871: 8 3 270 600 1
+77113465: 7 555 723 1 6 7 465
+6231: 5 8 5 956 5
+388: 4 291 1 18 4 72
+63870451184: 1 1 3 2 911 508 8 293
+961: 5 9 1 8 4 9 87 5 10 5 26 1
+651002: 2 861 685 2 84 5 2
+2999: 9 328 41 3 3
+697540864632: 38 79 4 2 726 8 4 316 2
+13399549: 3 1 11 73 8 59
+3562090: 866 1 6 83 674
+7828907: 74 2 706 87 2 10
+2386854: 1 2 6 68 78 5 2 4 3 5 5 4
+81760686: 706 5 7 1 6 6 2 7 2 19 87
+214797: 8 9 3 421 8 1 3 4 1 9 42 9
+54427336: 30 712 8 173 53 79 73
+1053341344949: 65 569 3 712 238 4
+1448736525566: 160 97 9 6 4 6 8 57 563
+2123419597390: 606 83 8 9 9 6 6 9 7 393
+123978240: 336 8 4 9 4 6 8 7 7 2 8 60
+35148535: 2 7 4 48 565 8 4 2 8 9 5 2
+204124802990: 9 630 13 340 36 7 583
+539960: 44 66 196 25 960
+37179596269: 5 9 63 806 153 6 267
+46944: 256 517 694 4 8
+164447918604: 3 3 5 68 2 239 59 3 20 1
+606512067: 202 5 85 25 2 1 7 4 6
+582: 6 82 4 78 1 8
+358489335615: 4 8 36 290 49 3 356 12
+37968920318: 619 787 27 6 9 203 1 8
+45917891663: 6 97 6 743 4 91 665
+56974260612: 681 192 73 598 894
+1433362936: 23 81 301 2 938
+13387282062: 71 5 209 7 382 7
+1440477: 3 9 37 3 66 4 2 667 58 9
+54297: 87 359 12 77 5 2 7
+45930136: 75 180 3 3 8 378 104 8
+15415060: 60 9 86 5 795 94 115
+152568: 9 1 61 5 68
+27460988: 2 74 60 488 501
+1057969: 284 4 4 93
+2426020: 856 7 13 202 2
+49096: 6 5 24 2 68
+9219: 345 9 3 85 8 23 15 5
+502450092967: 1 142 17 6 6 1 85 589
+252469069: 478 8 7 1 57 8 66 59
+24272: 1 8 8 7 4 752 9 6 1
+156972819: 21 9 858 968 3
+4435814457: 77 9 8 8 6 1 14 460
+7029: 57 3 5 6 971
+7053569543: 70 52 914 2 653 531 9
+19649102: 9 7 9 5 22 545 4 839 94
+267089242: 3 5 3 83 8 2 342 7 29 5 7
+93765: 40 945 53 957 47
+815253659: 48 97 581 700 8 52 7
+14381: 70 1 91 2 1
+6727770: 8 5 1 2 7 47 96 2 4 2 9 38
+488959: 12 7 770 5 7
+444850: 57 3 7 68 6 350
+359101435530: 819 36 14 3 143 553 2
+255298640: 5 7 2 336 9 6 25 6 226 8
+627971804: 91 69 71 723 81
+376876294: 603 625 5 15 779
+4870224: 8 32 3 2 68 8 93
+2921378615: 7 3 1 1 7 7 272 2 3 953 5
+25762: 22 3 475 1 288
+9334: 8 9 6 1 5 125 42 364
+61711944: 453 61 26 6 4 8 3
+31159097: 62 1 5 953 605 32 97
+1486721291: 178 87 68 96 9
+164195070864: 93 879 40 795 8 4 22
+209: 2 83 46
+448419: 16 657 642 341 4
+2213729487: 7 9 9 7 1 33 6 6 7 457 3 4
+826: 83 91 642 8 2
+69845916113: 4 6 87 39 6 1 6 62 78 77
+420247390: 7 8 70 5 9 6 6 33 1 9 6 53
+468391418: 1 5 4 363 885 7 3 9 6 3 8
+730151: 729 320 7 816 9
+6121517413: 707 9 6 6 4 4 6 43 6 9 3 4
+1331520: 8 304 44 288 95
+2651662: 24 755 9 34 1
+55557168: 45 8 7 13 6 49 716 8
+925030462: 453 992 2 8 8 64 4 2 3
+22929993: 6 1 9 403 8 6 7 9 677 9 8
+136079: 10 7 80 8 1
+4018560: 24 2 115 4 182
+155443251648: 1 89 7 9 6 2 2 819 48
+47311914088: 1 739 4 9 498 7 71 7 4
+12959675904: 7 558 529 98 1 84 64
+117075505: 4 651 2 693 2 63 6 89 7
+8663990338: 3 5 36 5 2 989 3 23 337
+38598654357: 8 78 6 7 3 2 5 1 9 1 343
+1066: 3 68 3 447 7
+9763884: 4 8 11 4 806
+2649: 710 3 76 94 1 3
+97022: 6 5 4 84 77 2
+4436743: 2 4 20 36 7 37 6
+10887: 8 1 931 930 26
+41289: 5 160 2 2 4
+64001920: 561 4 3 61 38
+4877046: 961 40 84 3 58
+94551: 942 3 5 3 1
+2348968: 234 86 3 6 8
+4829697944: 5 51 4 9 7 8 687 122 8
+1275687: 531 4 6 262 9 9
+866: 5 3 7 3 8
+62826: 1 6 1 1 6 2 634 84 491 7
+234421278: 586 4 2 12 81
+987: 5 81 3 31 864
+1512712546: 9 8 7 63 7 125 47
+81507: 1 4 800 69 38
+6885843415: 743 5 546 570 926
+28383880: 20 47 9 76 1 89 469
+8399: 73 86 242 8 877 994
+6734289681: 841 681 9 889
+2487534047373: 259 5 3 948 9 974 101
+11402873: 17 96 609 414 17 553
+18904325600: 55 21 735 4 325 600
+1335462451: 16 5 9 9 14 8 3 3 70 955
+70253: 2 115 30 9 2 38
+17112: 9 5 4 7 9 66 1 6 5 1 9 2
+240212907: 4 9 83 31 381 71 8 21 4
+1137902: 24 89 78 71 31
+17115001: 8 9 5 100 978 2
+8596391: 85 8 7 3 87 9 24 3 5 5 22
+536020: 80 67 17
+1999835: 8 241 881 8 790
+91503776: 1 6 419 4 5 7 7 2 6 8 91 7
+141043433: 470 5 59 6 4 796 1 2 3
+662831: 69 96 6 5 31 9
+2527482: 5 670 26 6 8 4 3 6 6 258
+663617436: 3 8 420 90 66 91 7
+5117396: 9 43 45 5 32 34 74
+286833458: 299 976 59 956
+1810904: 402 12 2 15 73 351 3
+14755500281: 339 44 1 161 3 3 2 1 3 2
+891738: 8 2 2 43 1 6 4 93 2 963
+1431924: 1 32 3 124 9 92 4
+18526: 572 3 33 7 71 27 4
+204101449: 650 314 9 5 50
+19637: 54 6 5 57 55
+46435032: 4 5 706 87 84
+3901884025: 21 5 80 167 377 335
+1357110633: 798 3 2 85 633
+368814453: 93 509 63 8 612
+16783688: 4 9 9 417 4 972 5 31 9
+12778007: 75 949 14 552 167
+3103890: 775 4 3 89 3
+746384: 52 14 91 74 5 8 305 9 8
+1324077: 1 132 24 2 1 6 674 967
+6907431: 203 9 3 7 2 6 3 6 30 4 3 3
+291241150: 142 5 2 5 909 5 500 86
+10416: 35 4 9 217
+222786114772: 428 3 36 98 836 1 52
+30956235: 5 263 130 3 193 37
+1807890624: 973 24 27 1 688
+70133160056: 822 711 9 1 4 2 6 5 5 5 7
+882460946: 1 8 8 6 3 1 3 2 5 943 2 3
+2371851: 8 27 50 5 890
+40024680321: 1 8 5 7 65 5 4 38 941 3 7
+487213: 29 9 661 697 9
+740743860807: 77 75 6 2 46 134 812
+17850: 20 9 9 26 83 5
+83290948: 5 91 8 75 2 927
+586005: 584 894 66 816 228
+483120417: 3 3 72 4 50 99 4 17
+21612195: 117 9 6 9 6 1 3 379 5 6 9
+1146285425: 70 5 863 1 945 427
+311680: 8 8 5 4 81 3 621 3 4 1 6 5
+81: 2 5 2 4 1
+1692432: 6 80 5 764 8 146
+982802: 73 73 2 8 4 3 8 5 3 5 7 2
+25409164560: 1 6 9 1 188 7 2 5 7 9 12 5
+366260: 318 47 47 1 78 7
+168240337: 5 944 11 6 9 9 4 3 5 2 67
+156807: 47 4 8 456 80 7
+14995745: 6 714 25 35 870
+24780095: 8 15 5 5 4 7 67 4 3 7 11
+104125: 557 482 2 22 2
+1844501: 41 2 9 357 7 202 32 5
+6275963892: 1 482 98 9 9 699 1 12 1
+3890574408: 176 78 786 6 28
+47467: 293 9 3 6 1
+926285: 9 2 532 96 5
+2209: 7 1 8 94 20 9
+219763712: 294 7 62 184 8 8
+1754288721: 344 99 440 155 814 9
+531930: 49 85 694 65 6 900 85
+1005239880: 1 733 9 94 6 997 2 4 60
+462: 33 9 26 131 8
+6132669: 9 52 546 4 6
+14541: 30 6 1 8 8
+49132039: 57 7 6 4 6 8 98 5 2 5 2 42
+10597759252: 40 7 3 622 8 10 9 7 7 6 9
+750879481848: 55 65 6 1 6 5 8 7 3 31 9 5
+301540320: 46 510 83 819 8 795
+25711201: 3 7 337 9 296 2 2 60 5 7
+3131219615335: 6 1 51 20 21 9 615 3 35
+190931: 6 6 9 7 836 2 1 7 6 1 552
+39873482: 1 61 950 90 687
+136495497599: 4 878 7 7 4 48 5 3 7 99 2
+62: 5 9 3
+4072901: 4 52 40 14 1 2 9 1 4 1 8 8
+3639889: 665 7 2 540 6 46 7 1
+44833: 8 910 6 472 1 8 3 672
+226176: 2 65 275 30 608
+100819083: 3 9 6 7 16 325 116 9 18
+2124636580913: 5 382 61 9 6 580 91 1
+18389: 71 5 6 4 6 2
+74957687: 7 2 7 8 5 9 5 59 9 636 6
+1935561104: 70 129 276 8 5 58 561
+285412: 39 26 7 961 98 2
+910425: 7 9 111 4 4 5 427
+1868263488: 7 973 1 56 654 52
+356: 9 9 7 64 4
+121563: 2 3 84 6 25 566
+11793880: 9 1 1 61 292 577
+6433920: 50 265 4 8 4
+757114712: 677 795 6 739 29 86 4
+92196314: 91 427 769 314
+3622: 9 5 32 3 9 8 9 20 65
+748249: 41 5 3 5 3 9 1 101 4 810
+57521100: 67 570 940 490 3
+694140: 42 712 4 1 92
+2584: 1 9 2 2 6 8 7 8 12 7 460 4
+1299844: 72 4 567 8 8 47
+4438062035: 7 710 541 133 8 1 996
+17848382: 733 639 949 13 44
+1285415254454: 377 73 415 786 82 3 2
+42573460: 1 8 2 3 317 730 79 381
+6487474065: 4 6 6 6 4 42 4 48 4 5 7 89
+11248830: 1 570 7 7 4 3 5 7 11 6 9 6
+1236900001: 24 10 720 625 57
+774935037: 293 473 63 40 66
+121832: 7 5 3 2 6 88 1 1 552 7 3 3
+1016743: 76 37 6 658 58
+2533368513: 61 4 55 636 596 21
+6990058: 4 1 835 30 204
+1847406607: 20 526 740 9 8
+779328000: 6 373 4 2 3 8 80 9 12 5 8
+96371: 3 5 88 208 156 7
+5419039: 3 8 517 90 41
+249830: 99 374 8 177 3 7 9 8 90
+100166088: 8 9 99 5 45 733 9 264
+3376144: 7 157 927 442 7 584 6
+43593660: 11 9 537 99 41
+411324689: 7 21 208 389 4 41 29 6
+234004: 61 323 7 87 89 62
+23183285: 23 18 26 6 88
+97916165533: 269 91 4 165 535
+1112448: 9 61 841 2 5 4 3 8 9 6 89
+8963: 896 5 1
+73558189852: 5 6 9 4 6 97 6 658 2 98 7
+13680414: 49 47 66 90 594
+24172014797: 48 336 8 5 1 479 7
+9967992824: 9 41 946 706 93 28 2 4
+76153297584: 47 81 66 2 975 84
+541346194846: 45 1 6 73 5 2 97 4 2 2 5 2
+2476666710: 2 630 15 208 17 630
+60279278: 6 982 17 61 6 3 845
+55027351: 4 528 9 2 88 135
+929699919: 3 89 480 9 8 2 99 5 4 21
+257203: 304 846 14 3 2
+19954464: 4 2 199 29 8 7 2 8 6 8 12
+349703121: 87 425 69 5 1 43 8 8 9
+9607739480: 120 8 1 4 3 7 3 6 3 4 74 3
+70229: 6 57 4 3 227
+19346675608: 4 3 7 4 3 7 466 3 5 5 609
+59456: 9 39 3 3 875 64
+4049373107: 490 831 2 825 85 1 7
+38708598: 9 8 89 40 412 1 7 18 2 5
+217787072132: 186 39 5 2 3 6 9 5 355 6
+1252444294: 382 309 78 42 9
+7796721302: 7 796 71 6 5 300
+232741316: 8 29 741 314 1
+26910444: 298 907 9 879 9 15
+40916974: 2 8 5 2 9 8 6 1 5 16 971
+34830687: 15 387 6 668 19
+49022893747: 778 140 1 17 7 4 9
+240774: 4 815 4 1 5
+2030: 4 95 11 46 895
+141432: 8 9 395 3 5 8 7 8 3 49 7 1
+466823: 1 32 544 26 71
+5847912: 202 47 694 82 7
+242621: 232 7 801 56 67
+330876: 8 4 2 2 2 2 7 150 5 18 7
+93687: 25 197 3 19 55
+71444393: 1 6 5 9 7 8 5 789 8 423 9
+6751035: 1 21 553 845 258 5 1
+191462315465: 957 31 2 3 15 464
+15511497: 55 8 2 94 73 289
+494852056149: 918 7 65 77 610 4 9
+116901382: 42 97 79 9 847 3 608 6
+287727946: 1 643 7 8 1 2 799 5 1 7
+26218340: 244 68 525 56 8 8 5 5 4
+76566: 9 77 13 60 6
+1830: 292 29 891 531 87
+403126: 356 9 148 58 706
+26406: 799 7 32 525 2 79 8
+61533769122: 1 551 8 75 6 983 189
+5083523328: 909 3 8 7 1 3 976 4 1 68
+35952796: 7 5 952 35 39 5 51
+167412767: 5 1 4 1 9 8 94 38 6 7 7 70
+2195302: 85 6 308 41 46
+1474198: 69 9 5 70 54
+364088987: 88 8 41 8 987
+78139858: 1 4 5 2 19 3 628 2 7 6 5 6
+4404409: 63 832 69
+78435: 7 47 2 61 5 16 7 21 5
+757520426: 77 2 98 98 26
+203318778: 4 281 991 7 5 62 31 8
+287102009: 8 88 930 764 73 6 8 7
+90227: 48 705 88 61 26
+8181666: 73 8 8 166 9
+4345042264: 16 1 3 8 23 5 183 8 62
+1748: 74 8 5 4 2
+253: 1 3 5 5 160 54
+7800887: 9 4 5 7 5 99 79 15 94 7
+5590: 14 42 8 5 81
+37762: 87 9 48 2 9 167
+333279: 2 2 58 80 363 524 1 57
+171214269218: 844 322 681 3 63
+118944: 5 8 7 873 93
+124807260: 419 9 9 3 40 8 270 300
+57067: 5 2 65 9 88 41 1
+67645321537: 92 3 2 715 36 71 4 4 9 6
+897: 1 7 827 62
+1191701596: 94 6 393 18 83 83 3 15
+1273: 3 4 7 1
+144149: 5 9 32 78 68
+1256472: 63 7 3 2 1 539 71 277 6
+30990621: 309 83 94 668 4
+38536499222: 2 510 18 1 9 95 88 780
+856374: 5 802 1 492 5 7 17
+130842660: 3 6 58 8 1 3 793 9 4 9
+69578132: 7 21 1 5 2 47 6 99 7 1 3 3
+5276748016: 8 7 53 1 208 226 93
+48947804: 5 910 9 3 8 1 330 773 2
+194740286300: 5 8 3 275 5 5 2 67 5 89 9
+22422998: 337 7 85 37 95 905
+6918244: 6 8 497 29 1
+45185615913: 97 710 90 9 1 9 1 810 3
+316116: 27 527 2 312 54
+11292: 929 9 4 5 201 64 9 384
+143302570: 4 16 808 8 117 82 888
+6574936: 810 8 94 844 91
+19500766: 927 48 20 7 67
+5496862: 4 4 2 5 86 8 399 28 3 3 7
+4081: 4 74 6 281 7
+107041551: 2 57 2 900 35 9 52
+365716: 8 34 43 277 3 719
+233199: 34 225 11 9
+75781172: 315 75 3 8 2 9 1 6 4
+6441: 3 601 327 1 3 6 45
+72: 7 5 6
+1847: 2 645 49 191 869 90 1
+689524: 27 4 504 47 44
+421965206413: 87 9 6 8 4 5 206 391 25
+965613600002: 4 846 6 280 7 140 690
+50559280: 8 1 6 4 2 4 567 26 534 4
+365496049: 9 4 32 4 8 7 6 686 7 4 2 5
+64994090: 2 9 4 1 21 74 3 73 79 7
+1241: 1 3 4 2 7 1 927 298
+7392027906: 8 350 66 4 2 7 909
+72665135998: 6 6 743 1 3 4 3 68 727 8
+42527813: 6 563 5 4 3 74 13
+2085967: 414 4 499 14 7
+10090710861: 386 49 70 80 95 41 21
+188483597: 7 582 4 8 218 54 1 877
+367380998: 2 2 2 6 96 3 900 5 998
+68095186: 23 615 83 8 58 665 27
+6509884572: 69 3 7 3 5 447 3 29 45
+24930077: 28 690 986 2 4 3 8 70
+886840: 24 5 86 770 45 5 883
+42180751: 55 6 7 350 535 356 90
+73846429: 761 303 97 4 36
+118157648: 762 70 33 91 1 9 221
+31303: 316 129 114 56
+2340: 1 2 1 90 13
+38925682: 993 392 77 2 5
+132208396: 881 37 1 90 5 8 7 3
+17362906539: 165 30 832 90 653 6
+513060: 806 636 6 352 86
+13556739: 451 47 42 13 3
+87166290: 5 85 372 295 72 4
+2085930558: 856 47 3 770 559
+1271377657: 9 33 460 8 7 7 8 914 6 3
+92480: 40 514 24 4 40
+203612568029: 9 8 9 3 4 593 8 4 4 80 3 1
+997367027585: 79 95 567 99 21 6 2
+14986059: 5 53 1 4 2 4 3 8 9 2 2 338
+16943: 7 4 20 353
+192411245217: 1 4 16 3 411 243 2 214
+3267945: 932 5 35 316 8 35 993
+7584118814: 7 671 470 45 7 3 34
+92005506: 773 3 57 87 6 1 761 8
+83148275295: 3 339 4 451 3 44 80 9 7
+2758387: 393 7 7 3 88
+158229124: 29 55 19 2 19 6 28 3
+19731329: 2 9 1 83 7 94 6 1 2 980 9
+372969: 6 731 54 84 9
+44398676936: 995 485 95 8 446
+29: 4 8 2 5
+28812: 917 31 113 6 27
+3221058: 4 4 121 4 4 5 83 41 620
+5012875154: 898 6 867 8 88 75 157
+619: 81 324 57 159
+2000875149: 877 559 36 5 57 387 8
+538511: 4 7 544 52 863
+37415205: 7 45 7 9 84 9 78 4 9 991
+87187684: 567 6 8 2 951 2
+723726: 7 146 73 188 2 12 9 62
+5611: 15 2 2 547 8
+161732: 8 19 1 4 8 39 32
+77322232001: 8 26 104 9 591 9 93 4 1
+7664: 9 8 5 45 7 2
+43978994: 462 45 951
+184200: 63 29 10 5 4
+24754844735: 574 385 653 66 2
+38841958460: 447 488 62 14 60
+512307698: 78 476 8 7 92 35 2 978
+978764208: 1 83 5 78 7 56 484 4 8 4
+51510: 9 1 77 9 7 32 38 7 583
+519848234: 89 192 64 9 659 7 8 4 3
+279759946564: 694 6 76 839 58 1 6 8 2
+27642337368: 30 7 9 658 999 7 368
+1714046887054: 9 4 3 88 3 699 1 7 3 976
+2096866: 762 7 4 2 9 7 4 7 1 2 27 2
+829347: 57 9 11 283 50 19
+5188: 9 98 18 397 4
+8546580: 3 931 494 63 95
+2569449: 4 318 202 3 8
+1008685401: 3 24 22 9 26 3 511 2 8
+38907: 341 1 41 3 61 4 64
+47134149: 59 5 6 423 9 55 2 6 37
+156: 4 5 48 80 8
+13690: 373 8 21 967 3
+152680: 5 4 62 3 9 75 1 7 6 2 5 4
+22638959: 203 8 12 282 4 90
+667766987: 6 184 969 39 93 7 5 3 2
+491050285: 9 3 9 9 9 7 6 28 270 6 8 3
+123681: 9 1 5 8 4 88 91 3 4 5 14 3
+2442314: 2 5 7 9 947
+66996296: 6 1 9 7 48 8 1 1 8 4 4 372
+527: 6 5 6 4 2
+18881838: 929 53 32 45 52 21 6
+41565: 44 3 73 665 8 52 2
+38558: 1 5 21 68 21
+6715471: 839 434 8
+6389: 91 7 6 9 5 7 178 974 5 4
+2117591196: 3 5 748 679 614 9 3 94
+28162196: 8 7 1 32 2 196
+35808181: 2 2 8 746 180
+9867444479: 73 352 40 6 9 1 2 48 1 4
+78674: 7 501 25 659 66
+45024: 4 4 3 3 18 18 57 276 7
+19756: 4 99 3 942 7
+799: 34 57 708
+157466: 8 2 6 8 7 678 40 9 6 69
+12013722: 53 771 14 3 7
+305851750: 8 736 8 8 5 6 3 34 8 7 5 1
+31627: 85 8 4 85 7
+120636732: 750 274 14 587 7 7
+239363098: 57 7 6 69 1 1 1 8 59 5 4 6
+23142: 7 7 4 3 8 579 6 6 8 8 50
+330: 3 42 4 9 8 5
+610059: 3 3 2 541 80 888
+15743730746: 31 237 561 6 84
+1289162: 5 6 57 370 11 28 8 5 2
+4912012: 49 120 12
+21034792439: 47 1 58 1 7 2 7 915 9 39
+10550: 2 3 9 970 45 8 514 1 5
+27651: 2 9 1 8 1 5 8 7 8 4 4 35
+53322: 8 87 4 8 2 66 63 96 759
+138446470: 26 6 47 682 4 71
+1648416: 9 278 7 657 3
+6538688411: 30 351 741 838 668
+1344480: 7 466 85 43 7 56 424
+244514648942: 468 4 7 2 5 2 1 2 37 945
+241060: 8 3 5 67 8 69 6 48 4
+40133289211: 659 7 87 9 7 2 9 17 4 1
+435126: 783 57 518 8
+17711006228220: 76 834 259 998 890
+5734080: 36 1 1 288 55
+8979895786: 9 2 93 110 38 8 5 21
+3330: 532 23 6
+10241840: 102 34 7 8 38
+13305407: 2 1 4 5 8 7 259 5 2 12 5 2
+1433165: 3 9 1 891 73 367 65
+177433659084: 44 3 58 41 477 10 4 2
+222432: 311 919 67 3 4 6 71 56
+85538: 1 4 7 2 910
+32399920: 9 4 9 9 9 343 93 8 3 8 70
+3157308169: 1 373 938 9 169
+48314570: 8 329 1 58 9 3 470 5
+2157760504767: 751 9 9 76 9 2 9 7 9 2 8 3
+113124347: 1 9 87 43 2 9 95 347 1
+234373743: 2 9 28 89 3 4 285
+65134472: 65 133 910 5 559
+5111: 5 42 2 513 9 53
+280608943: 45 909 7 7 7 5 5 9 4 587
+4944: 40 1 9 45
+177101: 80 4 186 35 2
+8123256299: 643 1 251 7 58 4 9 296
+2610013: 28 55 24 2 655 487 6
+3473695: 10 681 6 7 17 5
+102288: 44 8 693 6 8 980 4 2
+792006: 80 9 71 8 1 44 73 6 82
+8393424: 656 4 6 4 3 8 4 9 8 87 3 4
+3357448904: 9 2 514 71 901
+11955840: 5 778 1 3 2 8 3 2 4 4 16
+33523655: 1 1 3 1 1 294 8 68 4 5 8 3
+40658: 1 477 43 78 20
+419: 5 99 4
+10692: 9 8 4 4 27
+2316100872: 772 5 1 6 812 6
+8456347: 98 587 147 25
+45388: 6 755 4 4 18 59
+98449258: 90 859 57 260 7
+290537744: 880 4 3 514 8 11
+1920630535: 5 7 1 57 4 6 4 84 1 771
+41738341141: 8 3 103 9 3 4 6 5 962
+267888: 53 5 71 5 36
+457162268328: 14 3 754 7 71 9 6 318
+9818370: 378 26 9 30 10 3 90
+136158886: 8 1 7 95 325 2 1 5 3 8 7
+407: 6 42 69 8 78
+1012705468: 822 4 44 7 657 811
+4180406340096: 466 981 98 12 6 36 9 4
+10705064: 4 424 136 5 931 181
+2217819683: 7 51 62 9 9 423 96 3 5 4
+7508279323: 3 250 555 272 3 6 32 2
+2658216: 558 18 25 4 66
+59297: 60 97 2 747 351
+7495229447: 8 328 9 266 28 50
+2644059830523: 57 55 2 97 574 815 8
+54008124608: 94 751 10 958 57
+2207268: 50 592 72 49 50 7 9
+9395936945: 83 33 540 34 9 806 4
+65754981: 340 41 89 53
+5424: 267 8 2 69
+194627: 564 43 8 613 1
+75167376: 75 166 1 972 404
+237336645000: 628 915 45 700 590
+522553: 7 58 4 91 7 2 7 9 148 49
+4897: 29 13 6 95
+13670996090: 500 614 6 73 31 610
+16290039939: 74 7 6 1 7 882 87 2 438
+2804002896239: 85 2 41 17 5 52 774 5
+86506: 910 1 29 157 73 74
+21660911180: 722 2 15 911 180
+6815: 6 743 72
+114802992537: 6 17 215 5 39 1 5 186 2
+720907: 203 61 587 39 81 8
+15904808: 28 3 80 96 5 5
+200829237621: 999 710 37 3 744 27
+95188135587: 835 3 68 49 755 579 8
+61525: 81 49 4 75 3 4 5 8 28
+13221210319: 3 486 9 6 6 4 20 5 5 6 2 8
+3728996709124: 945 71 9 708 62 96 6 1
+39283710: 7 46 6 3 64 51 9 717
+24046652: 1 8 92 61 34 2 646 46 7
+178492223: 4 1 18 61 81 5 7 2 8 194
+1677144138: 6 123 83 227 39
+105579656: 2 3 4 7 2 96 8 6 63 6 366
+78276190303: 7 94 9 131 13 41 3 7 9
+110367683: 778 9 8 5 5 3 4 9 394 9
+7626312605: 4 502 5 552 1 72 598 5
+56319236258: 9 5 39 82 6 8 9 548 258
+5406139: 642 842 45 4 6
+45342: 7 29 96 267 8 1 2 50
+7525096: 1 820 330 35 97
+80899207: 11 236 80 9 7
+1022048029: 328 76 82 5 24 7
+853304431680: 313 630 752 6 603
+4608388638: 31 9 958 177 93
+68959734: 7 8 33 5 44 732 6 2 6 4
+4653: 845 319 4
+2523796352: 2 51 789 2 4 8 98
+185856: 885 21 6
+19948509: 72 83 24 3 910 396
+1680716: 236 37 35 71 3

2024/day08/challenge

@@ -0,0 +1,125 @@
+--- Day 8: Resonant Collinearity ---
+
+You find yourselves on the roof of a top-secret Easter Bunny installation.
+
+While The Historians do their thing, you take a look at the familiar huge antenna. Much to your surprise, it seems to have been reconfigured to emit a signal that makes people 0.1% more likely to buy Easter Bunny brand Imitation Mediocre Chocolate as a Christmas gift! Unthinkable!
+
+Scanning across the city, you find that there are actually many such antennas. Each antenna is tuned to a specific frequency indicated by a single lowercase letter, uppercase letter, or digit. You create a map (your puzzle input) of these antennas. For example:
+
+............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............
+
+The signal only applies its nefarious effect at specific antinodes based on the resonant frequencies of the antennas. In particular, an antinode occurs at any point that is perfectly in line with two antennas of the same frequency - but only when one of the antennas is twice as far away as the other. This means that for any pair of antennas with the same frequency, there are two antinodes, one on either side of them.
+
+So, for these two antennas with frequency a, they create the two antinodes marked with #:
+
+..........
+...#......
+..........
+....a.....
+..........
+.....a....
+..........
+......#...
+..........
+..........
+
+Adding a third antenna with the same frequency creates several more antinodes. It would ideally add four antinodes, but two are off the right side of the map, so instead it adds only two:
+
+..........
+...#......
+#.........
+....a.....
+........a.
+.....a....
+..#.......
+......#...
+..........
+..........
+
+Antennas with different frequencies don't create antinodes; A and a count as different frequencies. However, antinodes can occur at locations that contain antennas. In this diagram, the lone antenna with frequency capital A creates no antinodes but has a lowercase-a-frequency antinode at its location:
+
+..........
+...#......
+#.........
+....a.....
+........a.
+.....a....
+..#.......
+......A...
+..........
+..........
+
+The first example has antennas with two different frequencies, so the antinodes they create look like this, plus an antinode overlapping the topmost A-frequency antenna:
+
+......#....#
+...#....0...
+....#0....#.
+..#....0....
+....0....#..
+.#....A.....
+...#........
+#......#....
+........A...
+.........A..
+..........#.
+..........#.
+
+Because the topmost A-frequency antenna overlaps with a 0-frequency antinode, there are 14 total unique locations that contain an antinode within the bounds of the map.
+
+Calculate the impact of the signal. How many unique locations within the bounds of the map contain an antinode?
+
+Your puzzle answer was 269.
+--- Part Two ---
+
+Watching over your shoulder as you work, one of The Historians asks if you took the effects of resonant harmonics into your calculations.
+
+Whoops!
+
+After updating your model, it turns out that an antinode occurs at any grid position exactly in line with at least two antennas of the same frequency, regardless of distance. This means that some of the new antinodes will occur at the position of each antenna (unless that antenna is the only one of its frequency).
+
+So, these three T-frequency antennas now create many antinodes:
+
+T....#....
+...T......
+.T....#...
+.........#
+..#.......
+..........
+...#......
+..........
+....#.....
+..........
+
+In fact, the three T-frequency antennas are all exactly in line with two antennas, so they are all also antinodes! This brings the total number of antinodes in the above example to 9.
+
+The original example now has 34 antinodes, including the antinodes that appear on every antenna:
+
+##....#....#
+.#.#....0...
+..#.#0....#.
+..##...0....
+....0....#..
+.#...#A....#
+...#..#.....
+#....#.#....
+..#.....A...
+....#....A..
+.#........#.
+...#......##
+
+Calculate the impact of the signal using this updated model. How many unique locations within the bounds of the map contain an antinode?
+
+Your puzzle answer was 949.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day08/code.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+
+import sys
+from itertools import combinations
+from copy import deepcopy
+
+
+if __name__ == '__main__':
+    mp = [list(line.strip('\n')) for line in open(sys.argv[1])]
+    antinodes = deepcopy(mp)
+    ah = deepcopy(mp)
+
+    antennas = {}
+    for j, y in enumerate(mp): 
+        for i, x in enumerate(y):
+            if x != '.':
+                if x in antennas: antennas[x].append((i,j))
+                else: antennas[x] = [(i,j)]
+                ah[j][i] = '#'
+
+    for freq, ants in antennas.items():
+        for a1, a2 in combinations(ants, 2):
+            dx, dy = a2[0] - a1[0], a2[1] - a1[1]
+            x1, y1 = a1[0] - dx, a1[1] - dy
+            x2, y2 = a2[0] + dx, a2[1] + dy
+            if (0 <= x1 < len(mp[0])) and (0 <= y1 < len(mp)):
+                antinodes[y1][x1] = '#'
+            if (0 <= x2 < len(mp[0])) and (0 <= y2 < len(mp)):
+                antinodes[y2][x2] = '#'
+            while (0 <= x1 < len(mp[0])) and (0 <= y1 < len(mp)):
+                ah[y1][x1] = '#'
+                x1, y1 = x1-dx, y1-dy
+            while (0 <= x2 < len(mp[0])) and (0 <= y2 < len(mp)):
+                ah[y2][x2] = '#'
+                x2, y2 = x2+dx, y2+dy
+    
+    # challenge 1
+    res1 = sum([a.count('#') for a in antinodes])
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    res2 = sum([a.count('#') for a in ah])
+    print(f"challenge 2:\n{res2}")
+

2024/day08/example

@@ -0,0 +1,12 @@
+............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............

2024/day08/input

@@ -0,0 +1,50 @@
+...............................6.B..........P.....
+n..............M..................................
+....n.....sM7.............................6.....p.
+......................Mr......................P...
+.......n.......................................p.E
+.......................6...................p......
+r..............................C........B....P....
+.....................d........6......B4....P......
+.........................7....................4...
+.n......................R..............4..........
+.....N........S.................K.C..........4....
+...........N..r.....................B....K........
+..................................................
+......N.......x.............7.......K.....2....E..
+...................r..H........R..................
+.....................s....p........C...........2..
+....3.......................M.....................
+........k....................H....5...............
+.....x....N................d.5..y................J
+m.....................d7...................J......
+.......exk........................................
+.......x.............5.......R....................
+..........eY......................................
+...S.3..............................O.E...J.......
+.......8...H....k...............J.................
+......S.e.........C.H.....................X.....y.
+................j..........y.........2............
+...........e.........k............................
+......YS...3..............5..........K...XR.......
+...m..............j.s..........c..................
+.........................j........................
+...............j..................................
+.....m................................2...........
+.........Y......................................b.
+..................................................
+.......................h...........b..............
+............m......D..............d...............
+........o......D..................................
+...................................O..............
+..................................................
+......8...........................................
+........D.Y..o...................1................
+.....................................b..9.........
+........................h..0......................
+.....o......................h..0........b1........
+.........8.............X..........................
+..........o..........c..........1...........O.....
+....8....................y0...c...................
+..............D.......c..................9..0.....
+............................1..........O..9.......

2024/day09/challenge

@@ -0,0 +1,77 @@
+--- Day 9: Disk Fragmenter ---
+
+Another push of the button leaves you in the familiar hallways of some friendly amphipods! Good thing you each somehow got your own personal mini submarine. The Historians jet away in search of the Chief, mostly by driving directly into walls.
+
+While The Historians quickly figure out how to pilot these things, you notice an amphipod in the corner struggling with his computer. He's trying to make more contiguous free space by compacting all of the files, but his program isn't working; you offer to help.
+
+He shows you the disk map (your puzzle input) he's already generated. For example:
+
+2333133121414131402
+
+The disk map uses a dense format to represent the layout of files and free space on the disk. The digits alternate between indicating the length of a file and the length of free space.
+
+So, a disk map like 12345 would represent a one-block file, two blocks of free space, a three-block file, four blocks of free space, and then a five-block file. A disk map like 90909 would represent three nine-block files in a row (with no free space between them).
+
+Each file on disk also has an ID number based on the order of the files as they appear before they are rearranged, starting with ID 0. So, the disk map 12345 has three files: a one-block file with ID 0, a three-block file with ID 1, and a five-block file with ID 2. Using one character for each block where digits are the file ID and . is free space, the disk map 12345 represents these individual blocks:
+
+0..111....22222
+
+The first example above, 2333133121414131402, represents these individual blocks:
+
+00...111...2...333.44.5555.6666.777.888899
+
+The amphipod would like to move file blocks one at a time from the end of the disk to the leftmost free space block (until there are no gaps remaining between file blocks). For the disk map 12345, the process looks like this:
+
+0..111....22222
+02.111....2222.
+022111....222..
+0221112...22...
+02211122..2....
+022111222......
+
+The first example requires a few more steps:
+
+00...111...2...333.44.5555.6666.777.888899
+009..111...2...333.44.5555.6666.777.88889.
+0099.111...2...333.44.5555.6666.777.8888..
+00998111...2...333.44.5555.6666.777.888...
+009981118..2...333.44.5555.6666.777.88....
+0099811188.2...333.44.5555.6666.777.8.....
+009981118882...333.44.5555.6666.777.......
+0099811188827..333.44.5555.6666.77........
+00998111888277.333.44.5555.6666.7.........
+009981118882777333.44.5555.6666...........
+009981118882777333644.5555.666............
+00998111888277733364465555.66.............
+0099811188827773336446555566..............
+
+The final step of this file-compacting process is to update the filesystem checksum. To calculate the checksum, add up the result of multiplying each of these blocks' position with the file ID number it contains. The leftmost block is in position 0. If a block contains free space, skip it instead.
+
+Continuing the first example, the first few blocks' position multiplied by its file ID number are 0 * 0 = 0, 1 * 0 = 0, 2 * 9 = 18, 3 * 9 = 27, 4 * 8 = 32, and so on. In this example, the checksum is the sum of these, 1928.
+
+Compact the amphipod's hard drive using the process he requested. What is the resulting filesystem checksum? (Be careful copy/pasting the input for this puzzle; it is a single, very long line.)
+
+Your puzzle answer was 6288599492129.
+--- Part Two ---
+
+Upon completion, two things immediately become clear. First, the disk definitely has a lot more contiguous free space, just like the amphipod hoped. Second, the computer is running much more slowly! Maybe introducing all of that file system fragmentation was a bad idea?
+
+The eager amphipod already has a new plan: rather than move individual blocks, he'd like to try compacting the files on his disk by moving whole files instead.
+
+This time, attempt to move whole files to the leftmost span of free space blocks that could fit the file. Attempt to move each file exactly once in order of decreasing file ID number starting with the file with the highest file ID number. If there is no span of free space to the left of a file that is large enough to fit the file, the file does not move.
+
+The first example from above now proceeds differently:
+
+00...111...2...333.44.5555.6666.777.888899
+0099.111...2...333.44.5555.6666.777.8888..
+0099.1117772...333.44.5555.6666.....8888..
+0099.111777244.333....5555.6666.....8888..
+00992111777.44.333....5555.6666.....8888..
+
+The process of updating the filesystem checksum is the same; now, this example's checksum would be 2858.
+
+Start over, now compacting the amphipod's hard drive using this new method instead. What is the resulting filesystem checksum?
+
+Your puzzle answer was 6321896265143.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day09/code.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+
+import sys
+from copy import deepcopy
+
+
+def compress(mem):
+    blocks = deepcopy(mem)
+    r = len(blocks) - 1
+    for p, b in enumerate(blocks):
+        if b == None:
+            while blocks[r] == None: r -= 1
+            # if you check this before moving it obviously does not work
+            if p >= r: break
+            blocks[p] = blocks[r]
+            blocks[r] = None
+    return blocks
+
+
+def block_compress(free, full, size):
+    memory = [None] * size
+    for id, pos in reversed(full.items()):
+        p, b = pos
+        for i in sorted(free.keys()):
+            if i >= p: break
+            if free[i] < b: continue
+            else: p = i
+        if p != pos[0]:
+            free[p+b] = free[p] - b
+            free.pop(p)
+            if (pos[0]+b) in free:
+                free[pos[0]] = b + free[pos[0]+b]
+                free.pop(pos[0]+b)
+            else: free[pos[0]] = b
+        for j in range (p, p+b): memory[j] = id
+    return memory
+
+
+def checksum(blocks):
+    cs = 0
+    for p, b in enumerate(blocks):
+        if b == None: continue
+        cs += p * b
+    return cs
+
+
+if __name__ == '__main__':
+    blocks = [int(n) for n in list(open(sys.argv[1]).read().strip('\n'))]
+
+    memory = [None] * sum(blocks)
+    p, id = 0, 0
+    free, full = {}, {}
+
+    for i, b in enumerate(blocks):
+        if i % 2 == 0 and b > 0:
+            for j in range (p, p+b): memory[j] = id
+            full[id] = (p, b)
+            id += 1
+        else: free[p] = b
+        p += b
+
+    # challenge 1
+    res1 = checksum(compress(memory))
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    res2 = checksum(block_compress(free, full, sum(blocks)))
+    print(f"challenge 2:\n{res2}")
+

2024/day09/example

@@ -0,0 +1 @@
+2333133121414131402

2024/day09/input

@@ -0,0 +1 @@
+6337613674436833695582382518294574934721895775456926659050519789764499137091974516817593123529825470413735998773313821249746165140476827548333979879759812148140743921984858367387865689863575979767978384602135617653231357745451442716162787988827217792125086367824652239497919721686553336289590824034825884491882728622562067753798821229222238807634124749916752577072651378955553992845307918307276391238273773149858396433832536796653365434709657851887396187578778147166906832666361736921666530215593938020386798211757213535118020656880772626853567534823537521847840542462424239748076442664335159933397986757683414553370933017533841909225785682535581657913534751914590354573479543352482677664279490115563578845916997385280799060446627827972734570759842272566609483169585119611369745574079877574611920292074449221344989775049422092807055209772581092501625426515216037533372713253769756161167528724961425674338433856921993913658367042577497436930301681312780243028924226184437743980832960764956152123711024813868188023445957797073319557834842443457408060431584672765711965523592339064155945688420399677786021375036865224718236192794168244218132331879653238514185879711274422704721314129454939677194798258512282384257688549556871296166858544234847196990249480549228468620477732643536689838393877978653367792853453997762592631241338636138577555428914232648823466514071894652137678142034849239193626153640623580414314608933385485612012888459733812386760439427452815938894615323396842132211755866147610694370823973397748963732281746466628818129365432979699941761269528742324281144556379381879602911724569887421245076318843809377436853841020844590787517655729552955292366331147517060174571596182569363324916905792827650803161491453136021278077732064374448109498165846527088615498892332771430958179814356621939482129587840825717107138658080991769344985444860919820564023672497821693314755599976209047988027535412418173944146379780263754526214261017834795745288115763115420595437959121698079541886909440959071743761324933549055785895219883434371956470166162332913626974228698704867909040649016617460867032767038334727116689244913263370265020373034542849904912599647836283459162238825918961705866907222166252213569835943736588468231414457382040649035476988352594163315317533816572151422835818584798813953851735242330898787799654338389819473342688805893283467278648262129884651697935311570182570622882847035353690402079255041929980106820933987229229797544269317587273137530758375497634699083283818553718955173431710764611483099989260285267944525422740201440336499923419596970234642786695265316332262177054801980634357789526362333385795223688334671859856597460299593595342948524369087665258874015146296241079817536554214141611547952197222448591679959466790128097793753463968675487268040477815563380229164213672752215208397193598924987982747832046393487916058272183247276523097304784635757381389468220157974675179325452839698486360399879695439645913991513175369124373993030541020107278592224606843141533658010212677209043325490342134728924457069965191109858378318612965799852635497747794734595236056575848591924766220818282475324396727508923606980769458725299525452612238764560262657775582924569776483862349887068324449156297506644312010698479354773245797667563279586421294657685887842714452735721406358806171998745643329816772286796704744766044588635885245655459774311291948625491629489845688426449351717832871305285577753164547112747414863694575184763986239102380914887326641428026877699225992392096482370418830381415159027914953351339474421536726145911393866697198669419803537365630324763404171851150754014952414412764421984874654951033761733339938562539501446678133468715754993394758543046223523398728955356737781406931429746223633763241354625939226463718409470443784758784373146313839928768614814211356253038934558927790904988453344509018747586929116183883508082777047599959667039225085656443324675746726742070671570757088224324721174549372663665357073604929544480355015119614695352475587896476298629578751175152953418694340237315682094281425544939961496671928705760203087589687943595183450878840612944545990131498239234836114902680973922971833131647941447156647709468389679862137111593607085798425435736388659127388489737118418537272479942534595188821602597196231331570739573219060339186363023917360728735156330123729551057656522303564363389388580584548939620728350317592847949877699604391352991731027339689607733987355581433793686246693841298838454573798145112168184911056903380103939467378844737779330194582116721272190126779182733559651836358413812266428668253391218604697749045971951622863863588909757411613156843452329293637464367447412392465939681589644859070551682234527516285233194458768183747577595703213148321859615511124931012101096951580915748936348216536567577647345618573868040994546908948496431144262585963718473204983249712109511962363539684909657287652765145553168177329822059904713775018257475153084721036958345931122317816828966716917929036331813946978532772968156626894887060457595911112698Line truncated

2024/day10/challenge

@@ -0,0 +1,130 @@
+--- Day 10: Hoof It ---
+
+You all arrive at a Lava Production Facility on a floating island in the sky. As the others begin to search the massive industrial complex, you feel a small nose boop your leg and look down to discover a reindeer wearing a hard hat.
+
+The reindeer is holding a book titled "Lava Island Hiking Guide". However, when you open the book, you discover that most of it seems to have been scorched by lava! As you're about to ask how you can help, the reindeer brings you a blank topographic map of the surrounding area (your puzzle input) and looks up at you excitedly.
+
+Perhaps you can help fill in the missing hiking trails?
+
+The topographic map indicates the height at each position using a scale from 0 (lowest) to 9 (highest). For example:
+
+0123
+1234
+8765
+9876
+
+Based on un-scorched scraps of the book, you determine that a good hiking trail is as long as possible and has an even, gradual, uphill slope. For all practical purposes, this means that a hiking trail is any path that starts at height 0, ends at height 9, and always increases by a height of exactly 1 at each step. Hiking trails never include diagonal steps - only up, down, left, or right (from the perspective of the map).
+
+You look up from the map and notice that the reindeer has helpfully begun to construct a small pile of pencils, markers, rulers, compasses, stickers, and other equipment you might need to update the map with hiking trails.
+
+A trailhead is any position that starts one or more hiking trails - here, these positions will always have height 0. Assembling more fragments of pages, you establish that a trailhead's score is the number of 9-height positions reachable from that trailhead via a hiking trail. In the above example, the single trailhead in the top left corner has a score of 1 because it can reach a single 9 (the one in the bottom left).
+
+This trailhead has a score of 2:
+
+...0...
+...1...
+...2...
+6543456
+7.....7
+8.....8
+9.....9
+
+(The positions marked . are impassable tiles to simplify these examples; they do not appear on your actual topographic map.)
+
+This trailhead has a score of 4 because every 9 is reachable via a hiking trail except the one immediately to the left of the trailhead:
+
+..90..9
+...1.98
+...2..7
+6543456
+765.987
+876....
+987....
+
+This topographic map contains two trailheads; the trailhead at the top has a score of 1, while the trailhead at the bottom has a score of 2:
+
+10..9..
+2...8..
+3...7..
+4567654
+...8..3
+...9..2
+.....01
+
+Here's a larger example:
+
+89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732
+
+This larger example has 9 trailheads. Considering the trailheads in reading order, they have scores of 5, 6, 5, 3, 1, 3, 5, 3, and 5. Adding these scores together, the sum of the scores of all trailheads is 36.
+
+The reindeer gleefully carries over a protractor and adds it to the pile. What is the sum of the scores of all trailheads on your topographic map?
+
+Your puzzle answer was 629.
+--- Part Two ---
+
+The reindeer spends a few minutes reviewing your hiking trail map before realizing something, disappearing for a few minutes, and finally returning with yet another slightly-charred piece of paper.
+
+The paper describes a second way to measure a trailhead called its rating. A trailhead's rating is the number of distinct hiking trails which begin at that trailhead. For example:
+
+.....0.
+..4321.
+..5..2.
+..6543.
+..7..4.
+..8765.
+..9....
+
+The above map has a single trailhead; its rating is 3 because there are exactly three distinct hiking trails which begin at that position:
+
+.....0.   .....0.   .....0.
+..4321.   .....1.   .....1.
+..5....   .....2.   .....2.
+..6....   ..6543.   .....3.
+..7....   ..7....   .....4.
+..8....   ..8....   ..8765.
+..9....   ..9....   ..9....
+
+Here is a map containing a single trailhead with rating 13:
+
+..90..9
+...1.98
+...2..7
+6543456
+765.987
+876....
+987....
+
+This map contains a single trailhead with rating 227 (because there are 121 distinct hiking trails that lead to the 9 on the right edge and 106 that lead to the 9 on the bottom edge):
+
+012345
+123456
+234567
+345678
+4.6789
+56789.
+
+Here's the larger example from before:
+
+89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732
+
+Considering its trailheads in reading order, they have ratings of 20, 24, 10, 4, 1, 4, 5, 8, and 5. The sum of all trailhead ratings in this larger example topographic map is 81.
+
+You're not sure how, but the reindeer seems to have crafted some tiny flags out of toothpicks and bits of paper and is using them to mark trailheads on your topographic map. What is the sum of the ratings of all trailheads?
+
+Your puzzle answer was 1242.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day10/code.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def trailhead_score(tm, x, y):
+    height = tm[y][x]
+    end_positions = set([])
+    if height == 9: return set([(x,y)])
+    directions = [(0,1), (1,0), (0,-1), (-1,0)]
+    for d in directions:
+        nx, ny = x+d[0], y+d[1]
+        if nx < 0 or ny < 0: continue
+        try:
+            if tm[ny][nx] - height == 1:
+                end_positions = end_positions.union(trailhead_score(tm, nx, ny))
+        except IndexError: continue
+    return end_positions
+
+
+def trailhead_ranking(tm, x, y):
+    height = tm[y][x]
+    score = 0
+    if height == 9: return 1
+    directions = [(0,1), (1,0), (0,-1), (-1,0)]
+    for d in directions:
+        nx, ny = x+d[0], y+d[1]
+        if nx < 0 or ny < 0: continue
+        try:
+            if tm[ny][nx] - height == 1:
+                score += trailhead_ranking(tm, nx, ny)
+        except IndexError: continue
+    return score
+
+
+if __name__ == '__main__':
+    tm = [[int(l) for l in line.strip('\n')] for line in open(sys.argv[1])]
+    res1, res2 = 0, 0
+    for j, y in enumerate(tm):
+        for i, x in enumerate(y):
+            if x == 0:
+                res1 += len(trailhead_score(tm, i, j))
+                res2 += trailhead_ranking(tm, i, j)
+
+    # challenge 1
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day10/example

@@ -0,0 +1,8 @@
+89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732

2024/day10/input

@@ -0,0 +1,50 @@
+56760198543405456770107687012987873265430701234123
+47891087612514320889298596543236982176321878985054
+30932912503423411978321436760145453089490965076567
+21043803498598502565450345897896334569584324105498
+43256754387687643445601231056787276578675013212389
+50105620896014553238782322348996189432106522301210
+60234211205423469109695210567345023456987101232569
+71454301312345678100556501051269010787832198543478
+82365985407856743291447892340178732696949037643323
+99878876556989856782332309650065341054658743252110
+12389565445845698943221218761234456565789650167087
+03458890330532787892100321052442787074656782108996
+12766721221621056521098478934321692183245891210105
+00875437876521245430167569035630013290194300121234
+21980356985430130101456122128754324389980215432101
+32341245234561221212340033439961015671271326990123
+41239832101676678703121542345872343760362347887654
+50146701098787569254035671096112654854454558943210
+69655410889693452164549389987003569943003967656787
+78789324989582543076678432176124578752112876545490
+49670123476451001289986581065437669801198743454321
+34565404560302654345677893034458954321034652345210
+21670313401212701238766732123361056700125601216787
+10781223304343870349676678901272341811098700305891
+87690433210154901234587565078980110925643212456730
+98521049873269100448996652169765223434756965569821
+83430656794378234567385543258894304589807874321034
+12345690185123247855434789043210113676212981012125
+04396783276030110982329872178901923494345891234596
+65287654896543225671012763561032876587436780989687
+70132108987652334430101654432945214306525891078765
+89945345456701498521012346547876305211014342569854
+67876276789876567677890107236521456523210213410743
+56940189678930438988743298101430567894765104323212
+45434328509821321089654340122334567765894101298701
+50125613410030012127763019831021998568903210345692
+23498701322147897898892123742340867478912653210789
+10567654213456786721089054654356789302801743105678
+01678123402110995437658766789210676211010892234109
+67569016567021874378941043212101245432346781103201
+58454323898134565632332456701234306011015490321232
+49323454234012906701454327890965412102367305410147
+31012365125643812898765410378876543233458216568758
+21009876034756763019034101269989100146569325679669
+21898745129829654323129654352123299656478012784578
+30743231065018760563238765543034788798329983693056
+45656189654323011056769894672145632347012674212147
+01218088745896522349850123283034701456981065100238
+14309893236787631438943210190129892123672578921109
+25456782101896540127654301012010181034543465433212

2024/day11/challenge

@@ -0,0 +1,67 @@
+--- Day 11: Plutonian Pebbles ---
+
+The ancient civilization on Pluto was known for its ability to manipulate spacetime, and while The Historians explore their infinite corridors, you've noticed a strange set of physics-defying stones.
+
+At first glance, they seem like normal stones: they're arranged in a perfectly straight line, and each stone has a number engraved on it.
+
+The strange part is that every time you blink, the stones change.
+
+Sometimes, the number engraved on a stone changes. Other times, a stone might split in two, causing all the other stones to shift over a bit to make room in their perfectly straight line.
+
+As you observe them for a while, you find that the stones have a consistent behavior. Every time you blink, the stones each simultaneously change according to the first applicable rule in this list:
+
+    If the stone is engraved with the number 0, it is replaced by a stone engraved with the number 1.
+    If the stone is engraved with a number that has an even number of digits, it is replaced by two stones. The left half of the digits are engraved on the new left stone, and the right half of the digits are engraved on the new right stone. (The new numbers don't keep extra leading zeroes: 1000 would become stones 10 and 0.)
+    If none of the other rules apply, the stone is replaced by a new stone; the old stone's number multiplied by 2024 is engraved on the new stone.
+
+No matter how the stones change, their order is preserved, and they stay on their perfectly straight line.
+
+How will the stones evolve if you keep blinking at them? You take a note of the number engraved on each stone in the line (your puzzle input).
+
+If you have an arrangement of five stones engraved with the numbers 0 1 10 99 999 and you blink once, the stones transform as follows:
+
+    The first stone, 0, becomes a stone marked 1.
+    The second stone, 1, is multiplied by 2024 to become 2024.
+    The third stone, 10, is split into a stone marked 1 followed by a stone marked 0.
+    The fourth stone, 99, is split into two stones marked 9.
+    The fifth stone, 999, is replaced by a stone marked 2021976.
+
+So, after blinking once, your five stones would become an arrangement of seven stones engraved with the numbers 1 2024 1 0 9 9 2021976.
+
+Here is a longer example:
+
+Initial arrangement:
+125 17
+
+After 1 blink:
+253000 1 7
+
+After 2 blinks:
+253 0 2024 14168
+
+After 3 blinks:
+512072 1 20 24 28676032
+
+After 4 blinks:
+512 72 2024 2 0 2 4 2867 6032
+
+After 5 blinks:
+1036288 7 2 20 24 4048 1 4048 8096 28 67 60 32
+
+After 6 blinks:
+2097446912 14168 4048 2 0 2 4 40 48 2024 40 48 80 96 2 8 6 7 6 0 3 2
+
+In this example, after blinking six times, you would have 22 stones. After blinking 25 times, you would have 55312 stones!
+
+Consider the arrangement of stones in front of you. How many stones will you have after blinking 25 times?
+
+Your puzzle answer was 224529.
+--- Part Two ---
+
+The Historians sure are taking a long time. To be fair, the infinite corridors are very large.
+
+How many stones would you have after blinking a total of 75 times?
+
+Your puzzle answer was 266820198587914.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day11/code.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import sys
+from copy import deepcopy
+import numpy as np
+
+def memo(f):
+    memo = {}
+
+    def f2(x,y):
+        if (x,y) not in memo: memo[(x,y)] = f(x,y)
+        return memo[(x,y)]
+    return f2
+
+
+@memo
+def blink(stone, i):
+    if i == 0: return 1
+    else: i -= 1
+    if stone == 0: return blink(1,i)
+    elif len(str(stone)) % 2 == 0:
+        ds = int(len(str(int(stone)))/2)
+        return(blink(int(str(int(stone))[:ds]),i) + blink(int(str(int(stone))[ds:]),i))
+    else: return blink(stone*2024, i)
+
+
+if __name__ == '__main__':
+    stones = [int(n) for n in open(sys.argv[1]).read().strip('\n').split(' ')]
+
+    res1, res2 = 0, 0
+    for s in stones:
+        res1 += blink(s, 25)
+        res2 += blink(s, 75)
+
+    # challenge 1
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day11/example

@@ -0,0 +1 @@
+0 1 10 99 999

2024/day11/example2

@@ -0,0 +1 @@
+125 17

2024/day11/input

@@ -0,0 +1 @@
+1117 0 8 21078 2389032 142881 93 385

2024/day12/challenge

@@ -0,0 +1,148 @@
+--- Day 12: Garden Groups ---
+
+Why not search for the Chief Historian near the gardener and his massive farm? There's plenty of food, so The Historians grab something to eat while they search.
+
+You're about to settle near a complex arrangement of garden plots when some Elves ask if you can lend a hand. They'd like to set up fences around each region of garden plots, but they can't figure out how much fence they need to order or how much it will cost. They hand you a map (your puzzle input) of the garden plots.
+
+Each garden plot grows only a single type of plant and is indicated by a single letter on your map. When multiple garden plots are growing the same type of plant and are touching (horizontally or vertically), they form a region. For example:
+
+AAAA
+BBCD
+BBCC
+EEEC
+
+This 4x4 arrangement includes garden plots growing five different types of plants (labeled A, B, C, D, and E), each grouped into their own region.
+
+In order to accurately calculate the cost of the fence around a single region, you need to know that region's area and perimeter.
+
+The area of a region is simply the number of garden plots the region contains. The above map's type A, B, and C plants are each in a region of area 4. The type E plants are in a region of area 3; the type D plants are in a region of area 1.
+
+Each garden plot is a square and so has four sides. The perimeter of a region is the number of sides of garden plots in the region that do not touch another garden plot in the same region. The type A and C plants are each in a region with perimeter 10. The type B and E plants are each in a region with perimeter 8. The lone D plot forms its own region with perimeter 4.
+
+Visually indicating the sides of plots in each region that contribute to the perimeter using - and |, the above map's regions' perimeters are measured as follows:
+
++-+-+-+-+
+|A A A A|
++-+-+-+-+     +-+
+              |D|
++-+-+   +-+   +-+
+|B B|   |C|
++   +   + +-+
+|B B|   |C C|
++-+-+   +-+ +
+          |C|
++-+-+-+   +-+
+|E E E|
++-+-+-+
+
+Plants of the same type can appear in multiple separate regions, and regions can even appear within other regions. For example:
+
+OOOOO
+OXOXO
+OOOOO
+OXOXO
+OOOOO
+
+The above map contains five regions, one containing all of the O garden plots, and the other four each containing a single X plot.
+
+The four X regions each have area 1 and perimeter 4. The region containing 21 type O plants is more complicated; in addition to its outer edge contributing a perimeter of 20, its boundary with each X region contributes an additional 4 to its perimeter, for a total perimeter of 36.
+
+Due to "modern" business practices, the price of fence required for a region is found by multiplying that region's area by its perimeter. The total price of fencing all regions on a map is found by adding together the price of fence for every region on the map.
+
+In the first example, region A has price 4 * 10 = 40, region B has price 4 * 8 = 32, region C has price 4 * 10 = 40, region D has price 1 * 4 = 4, and region E has price 3 * 8 = 24. So, the total price for the first example is 140.
+
+In the second example, the region with all of the O plants has price 21 * 36 = 756, and each of the four smaller X regions has price 1 * 4 = 4, for a total price of 772 (756 + 4 + 4 + 4 + 4).
+
+Here's a larger example:
+
+RRRRIICCFF
+RRRRIICCCF
+VVRRRCCFFF
+VVRCCCJFFF
+VVVVCJJCFE
+VVIVCCJJEE
+VVIIICJJEE
+MIIIIIJJEE
+MIIISIJEEE
+MMMISSJEEE
+
+It contains:
+
+    A region of R plants with price 12 * 18 = 216.
+    A region of I plants with price 4 * 8 = 32.
+    A region of C plants with price 14 * 28 = 392.
+    A region of F plants with price 10 * 18 = 180.
+    A region of V plants with price 13 * 20 = 260.
+    A region of J plants with price 11 * 20 = 220.
+    A region of C plants with price 1 * 4 = 4.
+    A region of E plants with price 13 * 18 = 234.
+    A region of I plants with price 14 * 22 = 308.
+    A region of M plants with price 5 * 12 = 60.
+    A region of S plants with price 3 * 8 = 24.
+
+So, it has a total price of 1930.
+
+What is the total price of fencing all regions on your map?
+
+Your puzzle answer was 1415378.
+--- Part Two ---
+
+Fortunately, the Elves are trying to order so much fence that they qualify for a bulk discount!
+
+Under the bulk discount, instead of using the perimeter to calculate the price, you need to use the number of sides each region has. Each straight section of fence counts as a side, regardless of how long it is.
+
+Consider this example again:
+
+AAAA
+BBCD
+BBCC
+EEEC
+
+The region containing type A plants has 4 sides, as does each of the regions containing plants of type B, D, and E. However, the more complex region containing the plants of type C has 8 sides!
+
+Using the new method of calculating the per-region price by multiplying the region's area by its number of sides, regions A through E have prices 16, 16, 32, 4, and 12, respectively, for a total price of 80.
+
+The second example above (full of type X and O plants) would have a total price of 436.
+
+Here's a map that includes an E-shaped region full of type E plants:
+
+EEEEE
+EXXXX
+EEEEE
+EXXXX
+EEEEE
+
+The E-shaped region has an area of 17 and 12 sides for a price of 204. Including the two regions full of type X plants, this map has a total price of 236.
+
+This map has a total price of 368:
+
+AAAAAA
+AAABBA
+AAABBA
+ABBAAA
+ABBAAA
+AAAAAA
+
+It includes two regions full of type B plants (each with 4 sides) and a single region full of type A plants (with 4 sides on the outside and 8 more sides on the inside, a total of 12 sides). Be especially careful when counting the fence around regions like the one full of type A plants; in particular, each section of fence has an in-side and an out-side, so the fence does not connect across the middle of the region (where the two B regions touch diagonally). (The Elves would have used the Möbius Fencing Company instead, but their contract terms were too one-sided.)
+
+The larger example from before now has the following updated prices:
+
+    A region of R plants with price 12 * 10 = 120.
+    A region of I plants with price 4 * 4 = 16.
+    A region of C plants with price 14 * 22 = 308.
+    A region of F plants with price 10 * 12 = 120.
+    A region of V plants with price 13 * 10 = 130.
+    A region of J plants with price 11 * 12 = 132.
+    A region of C plants with price 1 * 4 = 4.
+    A region of E plants with price 13 * 8 = 104.
+    A region of I plants with price 14 * 16 = 224.
+    A region of M plants with price 5 * 6 = 30.
+    A region of S plants with price 3 * 6 = 18.
+
+Adding these together produces its new total price of 1206.
+
+What is the new total price of fencing all regions on your map?
+
+Your puzzle answer was 862714.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day12/code.py

@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def adjacent(x,y,pos):
+    dirs = [(0,1), (1,0), (0,-1), (-1,0)]
+    for p in pos:
+        for d in dirs:
+            if p[0] == d[0] + x and p[1] == d[1] + y:
+                return True
+    return False
+
+
+def join(rs):
+    if len(rs) == 1: return rs
+    removable = []
+    for i in range(len(rs)):
+        if i in removable:
+            continue
+        r1 = rs[i]
+        for j, r2 in enumerate(rs[i+1:]):
+            if j+i+1 in removable: continue
+            for r in r1:
+                if adjacent(*r,r2):
+                    r1 += r2
+                    r2 = []
+                    removable.append(i+1+j)
+                    break
+    for i in sorted(removable, reverse=True):
+        rs.remove(rs[i])
+
+
+if __name__ == '__main__':
+    plots = [list(line.strip('\n')) for line in open(sys.argv[1])]
+
+    def fence(p):
+        x,y = p
+        dirs = [(0,1), (1,0), (0,-1), (-1,0)]
+        fences = 0
+        for d in dirs:
+            nx = d[0] + x
+            ny = d[1] + y
+            if 0 <= nx < len(plots[0]) and 0 <= ny < len(plots):
+                if plots[y][x] != plots[ny][nx]: fences += 1
+            else: fences += 1
+        return fences
+
+    def disc_fence(region):
+        fences = 0
+        horizontal = {}
+        vertical = {}
+        for (x,y) in region:
+            v = [(1,0), (-1,0)]
+            h = [(0,1), (0,-1)]
+            for d in v:
+                nx = d[0] + x
+                if 0 <= nx < len(plots[0]):
+                    if plots[y][x] != plots[y][nx]:
+                        if (x, nx) in vertical: vertical[(x,nx)].append(y)
+                        else: vertical[(x, nx)] = [y]
+                else:
+                    if (x, nx) in vertical: vertical[(x,nx)].append(y)
+                    else: vertical[(x, nx)] = [y]
+
+            for d in h:
+                ny = d[1] + y
+                if 0 <= ny < len(plots):
+                    if plots[y][x] != plots[ny][x]:
+                        if (y,ny) in horizontal: horizontal[(y, ny)].append(x)
+                        else: horizontal[(y, ny)] = [x]
+                else:
+                    if (y,ny) in horizontal: horizontal[(y, ny)].append(x)
+                    else: horizontal[(y, ny)] = [x]
+
+        for ys in vertical.values():
+            prev = -2
+            for y in sorted(ys):
+                if y - prev > 1: fences += 1
+                prev = y
+        for xs in horizontal.values():
+            prev = -2
+            for x in sorted(xs):
+                if x - prev > 1: fences += 1
+                prev = x
+        return fences
+                    
+
+    # 'A': [[(x,y), (x,y),..],...]
+    regions = {}
+    for y, pls in enumerate(plots):
+        for x, p in enumerate(pls):
+            if p not in regions:
+                regions[p] = [[]]
+                regions[p][0].append((x,y))
+            else:
+                t = False
+                for l in regions[p]:
+                    if adjacent(x,y,l):
+                        l.append((x,y))
+                        t = True
+                        break
+                if not t: regions[p].append([(x,y)])
+                
+    res1, res2 = 0, 0
+
+    for p, rs in regions.items():
+        join(rs)
+        join(rs)
+        for r in rs:
+            res1 += sum(map(fence,r)) * len(r)
+            res2 += disc_fence(r) * len(r)
+
+    # challenge 1
+    # 1400060 is too low! -> double join.. not very nice xD
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day12/example

@@ -0,0 +1,10 @@
+RRRRIICCFF
+RRRRIICCCF
+VVRRRCCFFF
+VVRCCCJFFF
+VVVVCJJCFE
+VVIVCCJJEE
+VVIIICJJEE
+MIIIIIJJEE
+MIIISIJEEE
+MMMISSJEEE

2024/day12/example2

@@ -0,0 +1,4 @@
+AAAA
+BBCD
+BBCC
+EEEC

2024/day12/example3

@@ -0,0 +1,5 @@
+OOOOO
+OXOXO
+OOOOO
+OXOXO
+OOOOO

2024/day12/example4

@@ -0,0 +1,5 @@
+EEEEE
+EXXXX
+EEEEE
+EXXXX
+EEEEE

2024/day12/input

@@ -0,0 +1,140 @@
+IIIIIIIXXXXXXXXXXXXXCCCCCCCCCCCCCCCCCCXXXXXXXQQYYYYYYYYYFFFFFFFFFFFSSSSSUUUOOUUUUUUUUMJJJJMMMGGGGGGGGGGQQQQYYYYYYYYYYYYYYYNQQQQNNNNNNNNNNNNN
+IIIKIIXXXXXXXXXXXXXXCCCCCCCCCCCCCCCCCXXXXXXXXXXYYYYYYYYYYYFFFFFFFFFSSSUUUUUOOUUUUUUUUMJJJJJMMGGGGGGGGGGGGQQQQYYYYYYYYYXYYYNNNNNNNNNNNNZNZZNN
+IIKKIIXXXXXXXXXXXXXXKKCCCCCCCCCCCCCXXXXXXXXXXXXYYYYYYYYYYYKKFFFKFFFSSUUUUUUUOUUUUUUUUUJJJJJJMGGGGGGGGGGGGQQQQQYYYYYYYYYYYYNNNNNNNNNNZZZZZZZZ
+IIKKIIIIXXXXXXXXXXXKKKCCCCCCCCCCCCCCXXXXXXXXXXXXYYYYYYYYYYKKKKKKKKFFSUUUUUUUOUCUUUUUUUJJJJJJGGGGGGGGGGGQGGQQQYYYYYYYYYYYYNNNNNNNNNZZZZZZZZZZ
+KKKKKKIIXXXXXIXXKXXKKKCCCCCCCCCCCCCXXXXXXXXXXXXXXYYYYYYKKKKKKKKKFKFFFFUUUUUUUUCUUUUUUUJJJJJJBBGGGGGGGGGQQQQQYYYYYYYYYYYYYYNNNNNNVNZZZZZZZZZZ
+KKKKKKKKKXXXXXXXXXKKKKCCCBCCCCCCXXXXXXXXXXXXXXXXYYYYYYYKKKKKKKKKFFFFFUUUUUUUUUCUUUUUUUJJJJJJBHGGGGGGGGGGQQQQYYYYYYYYYYYYYNNNNNNZZZZZZZZZZZZZ
+KKKKKKKKKKKXXXXXXKKKKKCCCBBBCCCCCCXXXXXXXXXXXXXYYYYYYYYYYOKKKKKKFFFFUUUUUUUUUCCCCCCNNUJJOJHTHHHGGGGGGGGQQQQQYQYYYYYYYYYWYYYYNNNNZZZZZZZZZZZZ
+KKKKKKKKKKKQQXXXKKKKKKCCBBBBCCCCCCXXXCXXXXXXXXXYYYYYYYYYYKKKKKKKFKKFFUUUUUCCCCCCCCCNNNJOOHHHHHHHGGGGGGGAAQQQQQQQYYYYAYYWWYNNNNNNNDDZZZZZZZZZ
+KKKKKKKKKKKQXXXXKKKKKBBBBBBBBBBCCCCXXCXXXXXXXXXYYYYYYYYYYKKKKKKKKKKFFFUUUUCCCCCCCCCNNNHHHHHHHHHGGGGGGGGGAQQQAAQQYHHLYYHWWYDNNNNDDDDZZZZZZZZZ
+KKKKKKKKKQQQQQXXKKKKKBBBBBBBBBBCCCCXCCCXXXXXCXXCYYYYYYYYYKKKKKKKKKKFKKQQUCCCCCCCCCCNNNHHHHHHHHHHGGGGGGGAAAAAAAAAYHHHHHHHWWDDNNNNDDZZZZZZZZZZ
+KKKKKKKKKKSQQQKKKKKKBBBBBBBBBBBCCCCCCXXXXXXCCCCCCCYYYYYYYKKKKKKKKKKKKKQQQCCCCCCCCCCWWNNHHHHHHHYHGGJJGGGAAAAAAAAMMMHHHHHHWDDDDDDDDDDZZZZZZZZZ
+KKKKKKJKKKSSKKKKKKKKBBBBBBBBBBBCCCCCXXXXXXXCCCCCCYYYCYYKKKKKKKKKKKKKKKQCCCCCCCCCCCWWWWHHHHHHHHHHHJJJAGAAAAAAAAAMMMMHHHHHHDDDDDDDDDDDZZZZZZZZ
+KKKKKKJKKSSSEEKKKKKKKBBBBBBBBBCCCCCCCXXXCCXCCCCCCCCYCCYBKKKKKKKKKKKKKKKLLCLLEECCCWWWWWWHHHHHHHHHHHHHAAAAAAAAAAAAAHHHHHHHHHDPDDDDDDDZZZZZZZZZ
+KKKKKKJJKSSEEKKKKKKBBBBBBBBBBBCCCCCCCCCXCCCCCCCCCCCCCCCCKUUKKKKKKKKKKKKLLLLLEECCEWWWWWWHHHHHHHHHHHHAAAAAAAAAAAAAAAHHHHHHHHHPPDDDDDDZZZZZZZBB
+KKKKKJJJJSSSJJNKKBBBBBBIBBBUUUUUCCCCCCCCCCCCCCCCCCCCCCCUUUKKNNNKKKKRFKKLLLLEEEECEWWWWWWHHHHHHHHHHAAAAAAAAAAAAAAAAHHHHHHHHHHHDDDPDDDDZZZBBBBB
+KKKKJJJJJSSSJJNNKKKBBBIIIIXXXUUYUUCCCCCCCCCCCACCCCCPCCCUUUUNNNNNKKKRRRLLEEEEEEEEEEWWWWWWHHHHHHHHAAAAMAAAAAAAAAAAAAAHHHHHHHHSDDPPDDDDZZZBBBBB
+KKKJJJJJJSSSJJJNNKMBBBBBJXXXXUUYUUCCCCCCCCCCCCCCMCCCYYYYUUNNNNNNRRRRLLLLLEEEEEEEEWWWWWWWWWHHHHHAAAAMMMMMAAAMAAAAAAAHHHHHPPHSPPPPDDDDZZBBBBBB
+KKBBBBJJJSSSJJJJJKBBBBBKJUUUUUUUUUUUCCUCCCCCCHHHHZZZYYYYYUNNNNNNNRRRLLLLEEEEEEEEEEWWWWWWWWHHHHRRAAAMMMMMMMMMMMAAAAAHHHHHPPPSSPPPDPDDZZBBBBBB
+BBBBBBJJJJSSJJJJJQBQBCJKJUUUUUUUUUUUUUUUCCCCCHCHHHHYYYYYYUNYYNLRRRRLLLEEEEEEEEEEEEWWWWWWWWWWWHHRRAAMMMMMMMMMMMQQQQAHHHHPPPPPPPPPPPDBVVBBBBBB
+BBBBBBJJJJSSJJJJJQQQJJJJJJUUUUUUUUUUUUUUCCCHHHHHHHHHHYYYYYNYYLLLRRLLLKKKKEEEEEEEEWWWWWWWWWWWWWWRRAMMMMMMMMMMMMQQQQQQHHPPPPPPPPPPPUBBBBBBBBBB
+BBBBBJJJJJJJJJJJJQJJJJJJJJJJUUUUUUUUUCCCCCCCHHHHHHHHYYYYYYYYLLLLLLLLLKKKKKKKEEEEEEEEEEWWWWWWWWWRRRMMMMMMMMMMMMQQQQQQKRPPPPPPPPPUUUBBBBBBBBBB
+BBBBJJJJJJJJJJJJJJAJJJJJJJJJUUUUUUUUUUCCCCHCCHHHHHYYYYYYYYYYLLLLLLLLKKKKKKKKEEEEEEEEEEWWWWWWWTMRRMMMMMMMMMMMMGOOQQQKKKPPPPPPPPPUUUBBBBBBBBBB
+YYBBBJJJJJJJJJJJJAAJJJJJJJUUUUUUUUUUUCCCCHHHHHHHHHYYYYYYYYYYYLLLLLLLKKKKKKKKKKKEEEEEEEWWWWWWWTMMMMMMMMMMMMMMMOOOQQKKKPPPPPPPPPPUUUBBBBBBBBBB
+YYYYJJJJJJJJJJJJFLAAJJJJJJUUUUUUUUUUUUCCHHLHHHHHYYYYYYYYYYYYLLLLLLLLKOJJJKKKKKEEEEEEEEWWWWWWWTMMMMMEMMMMMMMMMOOOQKKKKKPPPPPPPPPPPBBBUBBBBBBB
+YYYJJJJJJJJJJJJJJLLAJJJJJJJUUUUUUUUUUUUUHHLHHHHHCYYYYYVVVGGGGLLLLLLLKJJJJKKKKKEEEEEEYWWWWWWWWMMMMEEEMMMMMMMOOOOOOWKKKKPOPKKPPPPPPUUUUBBBBBBB
+YYYYYJJJJJJJJJLLLLLLPPJJJJUUUWWWWWUUUUHHHHHHHHHHCYYYYXVVVGGGGLLLLLLLLJJJKKKKKSEEEEEEEWLLLWWWWMMMEEEEMMMMMMMOOOOOOWKKKKKPPKKKPPPPPUUUBBBBBBBB
+YYYYYYJJJJJJJLLLLLLLLPJJUUUUUUWVWWUUUEEHHHHHHHHHHYHYXXXVVVVVLLLLLLLLLLJJKKKKKKEEEEEELLLLWWWAMMMEEEMEMMMMMMMOOOOOOWKKKKKKKKKKPPJJJUUUBBBBBBBA
+YYYYYYLLAJJJJJLLLLLLLLJJJUJJJJWWWWWBUHHHHHHHHHHHHHHHXVVVVVVVVLQQLQQQLJJJKKKKKKEEEEEELLLLLXXAXMMMEKMMMMMMMMMMMOOOKKKKKKKKKKKKKPJJJJJJBBBBBBBB
+YYYYYLLLLJLLLLLLLLLLLLJJJJJJJWWWWWWBBHHHHHHHHHHHHHHHHPVVVVVVVQQQQQQQQQEEEEKKEEEEEOLLLLLLLLXXXXXMKKCCMMMMMMMOOOOOKKKKKKKKKKKKKKKKJJJBBBBBBBBB
+YYYYYLLLLJLLLLLLLLLLLLJJJJJJJWWWWWWWBBHHHHHHHHHHHHHHDDGVVVVVVVQQQQQQQQEEEEEEEEEEEOOLLLLLLLXXXXXMMKKCCMMMMOOOOOOKKKKKKKKKKKKKKKLKBJBBBBBBBBBB
+YYYLLLLLLJLLLLLLLLLLLLLJJJJWWWWWWWWWWBBHHHHHHHHHHHDHDGGVVVVVVVQQQQQQEEEEEEEEEEOOOOOLLLLLLLXMMMMMKKKCCCCMMOOOOOOOOFKKKKKKKKKKKKKKBBBBBBBBBBBF
+YYYLLLLLLLLLLLLLLLLLLJJJJJJJWWWWWWWBBBBBHHHHHHHUUHDDDGGGVVVVVQQQQQQQQEEEEEEEEOOOOOOLLLLLLLXXXXZKKKKCCCEEMOOOOOOFFFQKFKKKKKKKKKKKJBBBBBBBBBBF
+YYYYLLLLLLLLLLLOLOOOLJJOJJJJJXWWWWWBBBBBHHHHHHHHUHDDDGVVVVVVVVQQQQQQQEEEEEEOOOOOOOOOLOLLLKKKKKKKKKCCCEEEOOOOOOOFFFQFFFKKKKKKKKKJJBBBBBBBBBBF
+YYYYYLLLLLLLLLLOOOOOLOOOOJJJXXWWWWBBBBQQHGHHHHHHUHDDDGVVVVVVVVQQQQQQEEEEEEEEXXOOOOOOOOLLGKKKKKKKKKKEEEEEEOEOOFOFFQQFFFFKKKKKKKOZZBBBZBBBBBFF
+YYYYYLLLLGLLLGGGGGOOOOOOOOJXXXWOWWBBBQQQQHHHHHHHHHDVVVVVVVVVVVDQQQQQLEEEEEEOOOOOOOOOOLLKKKKKKKKKKKPPPEEEEEEOOFFFFFFFFFFFFFKKKKOOZUZZZZBBBBBB
+YYYLLLLGGGGLGGGGGOOOOOOOPXJXXXXXBBBBBBQQQQQHHHHHHHDDVDDDVVDDDDDQQLLQLLLYEEEYOOOOOOOOOUKKKKKKKKKKKKKPPPEEEEOOOFFFFFFFFFFFFMMKMKKOZZZGZBBJJJJJ
+YYYLGGLGGGGGGGGGOOOOOOOOOXXXXXXXBBBBBQQQQQQQHHQQDDDDDDDDDDDDDDDLLLLLLLLYYVYYQOOOOOOOOKKKKKKKKKKKLKPPPEEEEEOOOOFTFFFFFFFFFMMMMFKOZZZZZJJJJJJJ
+YYYGGGGGGGGGGGGOOOOOOOOXXXXXXXXXXBIIIIIQQQQQHHQQQQQQQDDDDDDDDDDLLLLLLLLYYYYQQOOOOOOOOOOKKKKKKKKKKPPPEEEEEOOOOOOTFFFFFFFFFFMFFFZZZZZZZZJJJJJN
+YYYQGGGGGGGGGGOOOOOOOOOXXXXXXXXBBBIIIIQQIIIQQQQQQYQQKKKDDDDDDDDLLLLLLLLYYYYQQOOOOOOOOOOKKKKKKKKKKPPPEEEEEEOOOOFFFFFFFFFFFFFFFZZZZZZZZZJJNJJN
+YYYYTTTGGGGGGGOOOOOOOOOOXXXXXXXBBBBIIIIIIIIQQQQQQQQQKKKKKDDDDDDLLLLLLLLYYYYYOOOOOOOOOOOPPPPPPKKKKPPPPEEEEEEEOFFFFFFFFFFFFFFFFFZZZZZZZJJJNNNN
+TTYTTTTTGGGGGGOOOOOOOXXXXXXXXXXXXBIIIIIIIIIQQQQQQQQQKKKDDDDDDDDDLLLLLYYYYYYYOOOOOOOOOOOPPPPPPPPPPPPEEEEEEEEEFFFFFFFFFFFFFFFFFFFFFZZOZZJNNNNN
+TTTTTTTGGDDGGOOOOOOOOXXXXXXXXXXIIIIIIIIIIIIQQQIQQQQQKKKDDDDDDDDLLLLYYYYYYYYYOOOOOOOOOOPPPPPPNNPPPPPPEEEEEEEEEQFFFFFFFFFFFFFFFFFFFZZDDZDDNNNN
+TTTTTTTTGGOOOOOOOOOOOXXXXXXXXXXRIIIIIIIIIIIIIIIQQQKKDDDDDDDDDDDLLLLLYYYYYYYYOOOOOOOOOOOPPPPPNNPPPPPPPEEEEEEEEQEFSRFFFFFFFFFFFFFFFZDDDDDDNNNN
+TTTTTTTTTTOOOOOOOOOOOOOXXXXXXXXXXIIIIIIIIIIIIIQQQQQMMMMMMMDDDDDMMMMMMMHHYYYYOOOOOOOOOOOPPPNNNNPPNPPOPEEEEEEEEEERRRFFFFFFFFGZFZFDDDDDDDDNNNNN
+TTTTTTTTTTTOOOOOOOONONNNNXXXXXXXXIIIIIIIIIIIIIIQQQQMMMMMMMMMMMMMMMMMMMHYYYOOOOOOOOOOOOOPPPNNNNNNNPOOPOOEEEEEEFFRRRZZFFFFFZZZZZZDDDDDDDDTNNRN
+TTTTTTTTTTTQOOOOOOONNNNNXXXXXXXXIIIGIIIIIIIIIIIPPQMMMMMMMMMMMMMMMMMMMMHYYYOOOOOOOOOOOOOPPNNNNNNNNPOOOOOOEEORRRRRRRRZZZZLZZZZZZDDDDDDDDDDDDRR
+TTTTTTQQQTTQOOOOOOODNNNNXNXXXXXXXXXGIIIIIIWIINIMMMMMMMMMMMMMMMMMMMMMMMHYYYYYOOOOOOOOOOONNNNNNNNNNPOOOOOOOOOORRRRRRRZZZZZZZZZZDDDDDDDDDDDDDDD
+TTTTTTQZQQQQQOOOFOOONNNNNNXXXGGXXXXGIIIWWWWWWWIMMMAMMMMMMMMMMMMMMMMMMMHYYYYOOOOOOOOOOOOONNNNNNNNNPOOOOOOOOOORRRRRRRZZZZZZZZZZDDDDDDDDDDDDQQD
+TTTTTQQQQQQQQOEOOONFNNNNNNXGXGGXXXGGGWWWWWWWNWNNMMMMMMMMMMMMMMMMMMMMMMHYYYYOOOOOOOOOOMOMMNNNNNNMMOOOOOOOOOORRRRRRRRRZZZZZZZZZDAADDDDDDDDDQQQ
+TTTTTQQQQQQQQOQQQONNNNNNNNGGXGIGGGGGGWWWWWWWWWNNFAAMMMMMMMMMMMMMMMMMMMYYYTTHHOOOOOOOMMMMMNNNNNNMOOOOOOOOOOOORRRRRRRZZZZZZZZZZZAPDPPPPDDDDQQQ
+TATTTQQQQQQQQQQQQQQQQNNNNNGGGIIIIGGGGGWWWWWWWWWNFAAMMMMMMMMMMMMMMMMMMMYTTTTHHHOOOOOOMMMMMNMMNNMMOOOOOOOOOOOORRRRRRZZZZZZZZZZPPAPPPPPPDDDQQQQ
+AAATTQQQQQQQQQQQQQQQGNNGGGGGIIIIIGIGZZZWWWWWWWWFFAAAAAAAPMMMMMMMMMMMMMTTTTTHHHOOOOOOMMMMMNMMMNMMOOOOOOOOOOOOVRZZRRZZZZZZZZZZPPPPPPPPPPDPQQQQ
+AAAATQQQQQQQQQQQQQQQGGGGGGGIIIIIIIIGZZZWWWWWWWFFFFAFFAAAPMMMMMMMMMMTTTTTTTTHHHOUUUUOMMBBMMMMMMRRRRRRRROOOOOOOOZRRZZZZZZZZZZZPPPPPPPPPPPPQQQQ
+AAAAAQGQQQQQQQQQQQQGGAAAAIIIIIIIIIIIZZZWWWWWFFFFFFFGFAAAPPPPPPPPPPDTTTTTTTTTTTOUUUUUBBLBMMMMMMRRRRRRRROOOOOOOOZZZZZZZZZZZZZZPPPPPPPPPPPPQQQQ
+AAAAAAQQQQQQQQQQQQQAGGAAAIIIIIIIIIIWZZZWWWFFFFFFFFFFFAFAFPPPPPPPTTTTTTTTTTTTTTUUUUUUBBBBBBBBMMRRRRRRRROOOOOOODZDDDZZZZZTTZZPPPPPPPPPPPPPPQQQ
+AAAAAAAAQQQAAAQQQQQAAAAAAAIIIIIIIIIWZZZWWFFFFFFFFFFFFFFFFPPPPPPPPTTTTTTTTTTTTTTTUUUUUBBBBBBMMMRRRRRRRROOOOOODDDFFDDZZZTTTTZPPPPPPPPPPPPPPPQQ
+KAAAAAAAAQAAAAAWWWAAOAAAAAIIIIIIIIIIZZZWWWFFFFFFFFFFFFFFFFPPPPPPPTTTTTTTTTTTRRRRZUZZUBBBBBBMMMRRRRRRRROOOOOOVDDFDDDZZTTTTTTTPPPPPPPPPPPPPQQQ
+KAAAAAAAAAAAAAAAAANNAAAABBIIIIIIIIIIZZZWWWWFFFFFFFFFFFFFFFPPPPPPPTTTTTTTTTTTRRRRZUZZUUBBBBBBMMRRRRRRRROOOOORRRRRRRRDZTTTTTTTPPPPPPPPPPPPPQQQ
+AAAAAAAAAAAAAAAAANNNNBBBBBBIBIBIIIIIZZZWFFWFFFFFFFFFFFFFFPPPPPPPPOOTTTTTTTTTTTTZZZZRRRRRRRRRRRRRRRRRRROOOVVRRRRRRRRDDTTTTTTTPPPPPPPPPPPPPPQQ
+AAAAASAAAAAAAAWWWBBBBBBBBBBBBMBBRIIWZZZWFFFFFFFFFFFFFKFFBPPPPPPOOOOXXTTTTTTTTTTZZZZRRRRRRRRRRRRRRRRRRRVVVVVRRRRRRRRDDTTTTTTTPPPPPPPQPPPQQQQQ
+AAAAASAAAAAAAAWWWBBBBBBBBBBBBBBBWWZZZZZWFTFFFFFFFFKKKKFKPPPPPPPOOOOOXXTTTTTZZZZZZZZRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDTTTTTTTTPPPPPPRUPPQQQQQ
+AAASSSAAAAAAAWWWWWBBBBBBBBBBBBBBWWZZZWWWFTTFFFFBKKKKKKKKPPPPPJOOOOOOOOTTTTTZZZZZZZZRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRSTTTTTTTTPPRRRRRRQQQQQQQQ
+SAASSSSSAAAWWWWWBBBBBBBBBBBBBBBVVAZZZWWWMTTFFFFFKKKKKKKKPPPPPJJOOOOOOOTTTTOZZZZZZZZRRRRRRRRRRRRVVVVRRRRRRRRRRRRRRDDSSTTTTTTTTTEERRRRRRQQQQQQ
+SSSSSSSWWWWWWWWWWWBBBBBBBBBBBBBBAAZZZXWMMMTMFFMMMKKKKKKKKPPPPPJOOOOOOOOOTTOZZZZZZZZRRRRRRRRRRRRVVVVRRRRRRRRRRRRRRDSSSTTTTTTTTTERRRRRRRRQQQQQ
+SSSSSSSWWWWWWWWWWWWBBBBBBBBBBBBXXAZZZXMHMMMMMMMMMMKKKKKKKKKKPPPPOOOOOIOOOOODZZZZZZZZZZZRRRRRRRRVVKVRRRRRRRRRRRRRRSSSTTTTTTTTEEERRRRRRRQQQQQQ
+SSSSSSSSWWWWWWWWWWBBBBBBBBBBTBBXXXZZZMMMMMMMMMMMMMKKKKKKKKKKPHOOOOOOOIOOOOODZDDZZZZZZZZRRRRRRRRVVKVRRRRRRRRRRRRRRSSSSSSSTEETEEEERRRRQQQQQQQQ
+SSSSSSSSWWWWOOWWWWWBBBBBBBBBTTBXXXZZZMXMMMMMMMMMMMMKKKKKKKKKOOOOOOOIIIOOODDDDDDZZDZZZZZRRRRRRRRVVVVRRRRRRRRRRRRRRSSSSSSSTEEEEEEELLBRQQQQQQQQ
+SSSSSSSSWWWOOWWWWWBBWVNBBBNBBBBXXXXMMMMMMMMMMMMMMMMMKKKKKKHKHOOOIIIIIIIOODDDDDDDZDZZZZZRRRRRRRRVVIVRRRRRRRRRRRRRRSSSSSSSTEEEEEEELLLRQLQQQQQT
+SSSSSSSWWOOOOWWWWWWWWVBBBBNBBBBXBBBGGGMMMMMMMMMMMMKKKKKKKKHHHHOOIIIIIIIDDDDDDDDDDDZZZZZQQQQQQQQQIIVRRRRRRRRRRRRRRSSSSSSSEEEEEEEEELLLLLTTTTTT
+SSSSSSWWOOOOOWWWVVVVVVVEBBDDBSBBBBBBBBBMMMMMMMMMMMKKKKKKKKHHHHIIIIIIIIIDDDDDDDDDDDDZZQQQQQQQQQQIIIIIUUURRRRRRRRRRSSSSSSREEEEEEEEELLLLLLLTTTT
+SSSSSSWOOOOOOOWWWVVVVVVVDDDDBSBBBBBBBBBBMMMMMMMMMKKKKKKKHHHHHHIIIIIIIIIEDDDDDDDDDDXDQQQQQQQQQQQIIIIIUUUUUUUIISSSSSSSSSSRRERRRREEEELLLLLLTTTT
+SSSSSSWWOOOOOOOOOVVVVVVVDDDDBBBBBBBBBBBBMMMMMMMMMKKKKKKKHHHHHHHIIIHIIIFDDDDDDDDDDDDDQQQQQQQQQQIIIIIIIUUUUUUIISISSSSSSSSRRERRRREEEELLLLLLTTTT
+SSSSSSWWOOOOOOOOOOOVVVVVDDDDBBBBBBBBBBEEEMMMMMMMMKKKKKKPKHHHHHHIHHHHHHDDDDDDDDDDDDDDDDQQQQQQIIIIIIIIIUUUUUUIIIIISSSRRSXRRRRRRRRRBEELLLLLTTTT
+SSSSSWWWOOOOOOOOOOOVVVVVDDDDBBBBBBBBCBBEEMMMMOOOKKKKKKKKKKKKKHHHHHHHDDDDDDDDDDDDDDDDDDQQQQQQMIIIIIIIUUUUUUIIIIIIIRRRRSSRRRRRRRRBBBBBLLLTTTTT
+SSSSSSOOOOOOOOOOOOOVVVVVDDDDDBBBBBBBBEEEEMEMMOOKKKKKKKKKKKKKKHHHHHHHDDDDDDDDDDDDDDDMODQQQQQMMIIIOOOIIUUUOUIIIIIIIIRROOOOOOOOOORBVBBBLLLLLTTG
+SSSSSSSOOOOOOOOOOBOVVVVVDDDDDEEBBBBBBEEEEEEOOOOOKKKKKKFKKKKKKHHHHHHHHDDDDDDDDDDDMDDMMMQQQQMMMMMIOIIIIIUUUUUIIIIIIIRROOOOOOOOOORYBBBBLBBLLLLG
+KSSSSSOOOOOOOOOOOBOFVVDDDDDDDDEBEEBEEEEEEEEEOEOOKLKKKKKKKKKKKHHHHHHDDDDDDDDDDDDDMMMMMMMMQZMMMMMMOOOIIIIUUUIIIIIIIIRROOOOOOOOOOYYBBBBBBBLLLGG
+KSSKKKXXXOOOOOOOOOFFVVDDDDDDDEEEEEEEEEEEEEEEEEEOOKKKKKKKKKKKKKHHHHHDFDDDDDDDDDDDMMMMMMMMZZMMMDDMOOOIIIIUUIIIIIIIIIIROOOOOOOOOOYYBBBBBBQIIIIG
+KSKKKKXXXOOOOOOOHMFFVVDDDDDDDDEEEEEEEEEEEEEEEEEOOKKKKKKKKKKKKKHHHHHDFDDDDDDDDDDEEMMMMMMZZZMMMMMOOOOOOIIUIIIIIIIIIIIROOOOOOOOOOYYBBILBQQIIIII
+KKKKKKKKKQOOOOOOOMFFVVVDDDDDEEEEEEEEEEEEEEEEEEEEOSSSSKKKKKKKKKHHHHHMMUDDDDDDDDTEEEMMMMMMZMMMMMOOOOOOOIIIIIIIIIIIIIRNOOOOOOOOOOYBBBIBBBBIIIII
+KKKKKKKBBGGUOOOOOMMFMGDDDDDDEEEEEEEEEEEEEEEUEEEEOSSSSKKKKKKKQKKHHHHMMUUDDDDDDDTTTTTMMMMZZZZMMMMOOOOOOOOIIIIIIIIIIIRRRRRROOOOPYYIBIIIBIIIIIII
+KKKKKKKBYYGGCCCODMMMMDDDDDDDEEEEEEEEEEEEEEEEEEEEOSSSSKSSSKSKKHHHHMMMMMUUTDDDTQTTTTMMMMMMZZZMMMOOOOOOOBOIIIIIIIIIIIIIRRRROOOOYYYIIIIIIIIIIIII
+KKKKKKKYYYGGCCCTTTTTTPPDDDDDEEEEEEEEEEEEEEEEEEEEOSSSSSSSSSSSSHHHHHMMMMMMTTTTTTTTTXMYMGMMMMZZOOOOOOOOOOIIIIIXIIXXIIIIIIIIMPPPPYIIIIIIIIIIIIII
+KKKKKKEEYYGGCCCTTTTTTTTDDDDDOCCEECCEEEEEEEEEEEEOOSSSSSSSSSSSSHHHHHMQYMMMTTTTTTTTTTTTLGGGOOOOOOOOOOIOOAIIIIIXXXXXXIIIIIMMMMPPPPIIIIIIIIIIIIII
+KKKKKKEEYYYGCCCTTTTTTTTDDDUDCCCVVCCEYYEEEEEEEEEEOOSSSSSSSSSSSYYYYYYYYYPPPPTTTTTTTTSSGGGGGGGOOOOOOIIIOIIIIIIXXXXXXXIIIMMHMMMPMPMIIIIIIIIIIIII
+KKKKKFYYYYYYCCCTTTTTTTTQDDDDCCCCCCCCYYYYEEEEEEEWOWSSSSSSSSSSYYYYYYYYYYYPPPPTTTTTTTKKBBGGGGGGGOOOOIIIIIIIIAAXXXXXXXIMMMMMMMMMMMMMIYIIIIIIIIII
+KKKDFFYYCUCCCCCCTTTTTTTTWWWCCCCCCCCCCCYYYEEEEESWOWWWSSSSSSSSYYYYYYYYYYYYPPPTTTTPPPKKKBBGGGGGGOOOOIIIIIIIIAIXXXXXMIIIIMMMMMMMFFFFFIIIIIIIIIJJ
+DDDDFFFFUUUUCCCCTTTTTTTTWWWCCCCCCCYYYYYYYEEEEEEWWWWWWWWSSSSVVYYYYYYTYYPPPPPPPPPPKPKKKBBKGQGGGOOIIIIIIIIDDDDDDDDDDMMMMMMMMMMHHFFFFIIFIIIIIJJJ
+DDDDDFFUYUUUUTTTTTTTTTTTWWWCCCCCCCYYYYYYYYEEEEKWWWWWWWWWSSSVVYYYYYYYYPPPPPPPPPPPKKKKKKKKQQIGGOIIIIIIIIIDDDDDDDDDDMMMMMMMMMMHHHFFFFFFIIIIIIIJ
+DDDDDFFUUUUUWTTTTTTTTTTTTTWWCCCCCCCYYYYVVEEVEEKWWWWWWWWWWWSVVYYYYYYYPPPPPPOPOPOOKKKKKKKKKQIIIIIIIIIIIIIDDDDDDDDDDMMMMMMMMMMMHFFFFFFFFFFIIFIP
+DDDDDDDCCUUTTTTTTTTTTTTTTTWWCKCCCYYYYVVVDEVVEEKVWQQQQQQWWWSVVVYYYYPPPPPPPPOPOOOKKKKKKKKKKQIIIIIIIIIIIIIDDDDDDDDDDMMMMMMMMMMHHHFFFFFFFFFFFFPP
+DDDDDDDCUUUTTTTTTTTTTTTTTTTWWMMYYYYYYVVVVVVVVVVVVQQQQQQWWWNNNNYYYYYPPPPPOOOOOOKKKKKKKKKRRIIIIIIIIIIIIIHDDDDDDDDDDMMMMMMMMMMMMFFFFFFFFFFFFFFP
+DDDDDDDDUUUTTJTTTTBTTTTTTTTMMQMMMYYYYVVVVVQQQQQQQQQQQQQNBNNNNNNNNNPPPPPPOOOOOOOOKKKKKKKRRRIIIIIIIIIIIAHDDDDDDDDDDMMMMMMMMMMQRFFFFFFFFFFFFPPP
+DDDDDDDDJUUJJJTTBBBBTTTTTTSMMMMMMYYYYVVVVVQQQQQQQQQQQQQNNNNNNNNNNNNPPPPPPOOOOOOOOOOJKKKGGIIIIIIIIIIIAAADDDDDDDDDDFMZMMMMMMMRRRRFFFFFFFFFPPPP
+DDDDDDJJJJUJJBQBBBBBTTTTTTSMMMMMMYYYQQQQQQQQQQQQQQQQQQQGGNNNNNNNNNNNPPPPOOOOOOOOOOOOGGGGGIIIIIIIIIIAAAADDDDDDDDDDFFZMMMMWMMMRRRFFFFFFFFFPPPP
+NDDKDDKJJJJJBBBBBBBTTTTHBTTMMMMMMYYYQQQQQQQQQQQQQQQQQQQGNNNNNNNNNNNNPPPOOOOOOOOOOOYOGGGGGIIIIIIIIIAAAAADDDDDDDDDDFFFFMMMMMMMRRFFFFFFFFFFPPPP
+KDDKKDKWWWJJJBBBBBBBBBBBBMTMMMMMMYYVQQQQQQQQQQQQQQQUGGGGGNNNNNNNNNMNNPOOOOOOOOOOOOYGGGGGGYIGIIIIIAAAAAAAAAAAFFFFFFFFFFFSRRRRRRRPRFFFFFFFPPPP
+KKKKKKKWWWJJJBBBBBBBBBBBBBBMMMMMMYMOVVVVVQQQQQQQQQUUGGNGNNNNNNNZZPZNZZNNOOOOOOOOOOOGGGGGGGGGGIIIAAAAAAAAAAAAAFFFFFFFFFFRRRRRRPPPPFFFPPPPPPPP
+KKKKKKKWWWWJJBBBBBBBBBBBBBBBMMOOMMMOOVVVVQQQQQQUTUUUUUNNNNNNNNZZZZZZZNNNNOCOOOOOOOGGGGGGGGGGGJIAAAAAAAAAAAAAAFFFFFFFFFFFFRRPPPPPPPFPPPPTPTTT
+KKKKKKKWWWWJJBBBBBBBBBBBBBBBBBBOOMOOOOIVGQQQQQQJZUUMMMNNNNNFNNZZZZZFZZNNNOCOOOOOOOGGGGGGGGGGGJJAAAAAAAAAAAAAAAAFFFFFFFFVVRPPPPPPPPPPPPTTTTTT
+KKCKKKKWWWMMJBBBBBBBBBBBBBBBBBBOOOOOOGGGGQQQQQQZZZZZZMMNNNNFNNZZZZZZZZZNNNCOOWOVOGGGLLGGGGGJGJJAAPAAAAAAAAAAAZSSFFFFFFVVVVPPPPPPPPPPPPTTTTTT
+KKCKMKKWWWMMMMBBLBBBBBBBBBBBBBBOOOOOOGGGGQQQQQQZZZZCCNNNFNNFFFFFZZZZZZZNNNCOOOLLLGGGLLLLLLJJJJFFFFAAAAAAAAAAASSSSFFFFVVVVVVPPPPPPPPPPTTTTTTT
+CCCMMPMMMZMMMMBBVBBVVVBBBBBBBBBOOOOOOGGGGQQQQQQHZZZZZNNNFNFFFFFEZZZZZZZZNNCOCCCLLLLLLLLLLLLLJFFFFFDAABAKAKKKBKSSSSFFVVVVVOOPPPPPPPPPPTTTTTTT
+CCCMMMMMMMMMMVVVVVVVVVVBBVBBBBOOOOOOOGGGGQQQQQQGZZZZANNGFFFFFFFFZZZZZZZZCCCCCCCLLLLLLLLLLLLLJJFFFFFKQKKKKKKKKKSSSSSSVVVOOOZPPPPPPPPPPTTTTTTT
+CCCMMMMMMMMMMAAVVVVVVVVVVVOOOOOOOOOGGGGGGQQQQQQRZZZFAAAFFFFFFFFFFZZZZZZZCCCCCCCCLLLLLLLLLLLLLFFFFFFKKKKKKKKKKKKKSSSSSVVOOOZPPPPPPPPITTTTTTTT
+KCMMMMMMMMAAMAAVVTVVVTVVOOOOOOOOOOOGXGGGGQQQQQQZZRZFFFFFFFFFFFFFFFZZZZZZCCCCCCCCLLLLLLLLLLLLLLFFFFFXKKKKKKKKKKKKKKSVVVVVOSPPPPPPPPIIITTTTTTT
+KCKMMMMMMAAAAAAATTTVTTTOOOOOOOGOOGGGGGGGGGGGGGRRRRRFFFFFFFFFFFFFFIFZZZZZCSSCCCCCLLLLLLLLLLLYLFFFFFFFQKKKKKKKKKKKKKKKVVVVOOVVUPPPPIIIITTTTTTT
+KKKKMMKMMAAAAAAAATTTTTTTTTTOOOGOGGGGGGEEGGGGGGGRRFFFFFFFFFFFFFFFFFFZZZZZCSCCCCCCLLLLLLLLLLLLLOOFFFFFQKKKKKKKKKKKKKKKKVVOOVVVPPPPPIIITTTTTTTT
+KKKKKKKKMAAAAAATTTTTTTTTTTTTOOGGGGGGGGGGGGGGGGGRFFFFFFFFFFFFFFFFFFFZZZZVCCCCCCCCCLLLJJJJJJJJJOQFQQQQQQKKKKKKKKKKKKKQVVVOOVVVVPVVIIIIFTTTTTTT
+KKKKKKKKKKKAAAATYRTTTTTTTTTTYYYGGGGGGGGGGGGGGGRRRRFFFFFFFFFFFFFFFFFZZZZVCCCCCCCCCCLLJJJJJJJJJQQQQQQQQKKKKKKKKKKKKKKKKKVVVVVVVPPVIIIIFFTTNTTD
+KKKKKKKKKKKAAAARRRTTTTTTTTYYYYYUGGGGGGGGGGGGGGRVRVZAFFFAAAFFFNFTFFFKKSSCCCCCCCCCCCCCJJJJJJJJJOQQQQQQQKKKKXXXXKKKKKKKKKVVVVVVVVVVIFFFFFFFNFFF
+KKKKKKKKKKKAAAARRRRTTTTRRRRLYYGGGGGGGGGGGGGGGRRVVVAAFFAAAAAFFNNSSSFFSSSSCCCCCCCCCCHHJJJJJJJJJOQQQQQNQKKKKKXXXKKKKKKKKKKVVVSVVVVFFFFFFFFFFFFF
+KKKKKKKKKKKAAAARRRRRTRRRRRRRYYYGGGGGGGGGGGGGGRRVVVAAAAAAAAAFFNSSSSSSSSSSSCCCCCCCCCHZJJJJJJJJJJJJJNNNNKKKKKXXXXKKKWWDDKVVVVSVVVVSSSSFFFFFFFFF
+HKKKKKKKKAAAAARRRRRRRRRRRYYAYYYYGGGGGGGGGGGGRRVUVVPAAAAAAAAWSSSSSSSSSSSSSCCCCCCCHHHHJJJJJJJJJJJJJJJNNNNKKXXXFFFKWWDDDKVVVVSSVVVSSFSSFFFFFFFF
+HKKPKKKKAAAAAARHRRRRRRRRRRYYYYYYYGGGGGGGGGVVVVVVVVPAAAAAAAAAAAASSSSSSSSLLCCCCCCCHHHHJJJJJJJJJJJJJJJNNNNNNNNXNFFDWWDDDDVMVVSSSUVSSFFFFFFFFFFF
+HCCCKKKAAAAGAARRRRRRRRRRRLYAYYYYYYGGGGGGGGVVVVVVVVVAAAAAAAAAASSSSSSSSSSLCCCCCCCCCCHIIIJJJJJJJJJJJJJNNNNNNNNNNAADDDDDDUMMMXXSSUUFFFFFFFFFFFFF
+HCCCCKAAAAGGGGRRRRRRRRRRRLYYYYYYYYYRGGGGGZVVVVVVVVVAAAAAAAAAAASCCCCCCCCCWCCCCCCCYCHYYYJJJJJJJJJJJJJNNNNNNNNNNAWDDDDDDDDMMMMSSUMMFFFFFFFFFFFF
+HCCHHKGGGGGGGGGRRRRRRRRRRRPYYYYYYYRRRRRVVVVVVVVVVVVAAAAAAAAAAASCCCCCCCCCHCHCCCZCYCYYYYJJJJJJJJJJJJJNNNNNNNNNNAWDDDDDDDDDMMMMMMMMFFFFFFFFFFFF
+HHHHHHHGGGGGGGGRRRRRRRRRRRPPYYYYYRRRRRRRRRVVVVVVAAVAAAAAAAAAAAACCCCCCCCCHHHHHHZYYYYYYYJJJJJJJJJJJJJNNNNNNNNNNAAOOOODDDDMMMMMMMMMMMFFFFFFFFFF
+HHHHHHHGGGGGJGGRRRRRRRRRPPPPYYKYYRRRRRRRRRVVVVVVAAAAAAAAAAAEASSCCCCCCCCCHHHHHYYYYYYYYYYYYYYYYPPPJJJNNNNNNNNAAAAOOOODDDMMMMMMMMMMMFFFFFFFFFFF
+HHHHHHHGGGGGGGGRRRRRRRRRRPPFYYKFYFFFRRRRRVVVVVVVAAAAAAAAAAAESSSCCCCCCCCCHHHWHHHYYYYYYYYYYYYPPPPPJJJPPPPNNNAAAAAAAAODHMMMMMMMMMVBFFFFFFFFFFFF
+HHHHHHGGGGGGTTTRYRRRRRTTFTPFFFKFFFFFRRRRRRXVVVVAAAAAAAAAAADSSSSCCCCCCCCCHHHHHHHYYYYYYYYYYYYYYPPPJJJPPPPPPPAAAAAAAAADHHMMMMMMMMMBFFFFFFFKKKKK
+HHHHTGGGGGGGTTTTRRRRRRTTTTTFFFFFFFFFRRRRRXXVXXVVVAAAAAAAAADDDDHHHHHCCCCHHHHHHHHHYYYYYYYYYYYYYPPPPPPPPPPPPFAAAAAAAAAAHHHHHMMMMDBBFFBBBKKKKKKK
+HHHHTTTGTTTTTTTTRRPRRRPPOTTFFFFFFFFFRRRRXXXXXXVVVVVAAAAAAADVDDDHHHHCCCCHHHHHHHHHYYYYYYYYYYHYPPPPPPPPPPPPPAAAAAAAUADAHHHHHHMHHDBBBFBBBBUUKKKY
+HHHHTTTTTTTTTTTTPRPRGGPOOOFFFFFFFFFFFRRRXXXXVVVVVVVAAAVAAAVVDDVHHHHCCCCCCCCCCEYYYYYYYYYYYYYYPPPPPPPPPPPPPAAAAAAAAAAHHHHHHHHHDDDDBBBBBBUUKKKK
+HHHTTTTTTTTTTTTTPPPPPPPOOFFFFFFFFFFFFFFXXXXXVVVVVVVAAVVVVVVVVVVHHHHCCCCCCCCCCTYEYYYYYYYYYYYPPPPPPPPPPRPYPAAAAAAAAAAAHHHHHHHDDDDBBBBBBUUUKKKK
+HHHHYYTTTTTTTTTPPPPPPPPPOOFFFFFFFFFFFFFMMXXXXXVVVVVVVVVVVVGVVWWWHHHCCCCCCCCCCTEEEEEYYYYYYXYPPPPPPPPPBPPPPPAAAAAAAAAHHHHHBBBDYDBBBBBBUUKKKKKK
+HHHHYYYTTTTTTTTPPPPPPPPOOOFFFFFFFFFFFFFMMXXXXXXVVVVVVVVVVVVVVWWWHHHHCCCCCCCCCTEEEEEYYYYQQQQDPPPPPVVPPPPPPPAAAAAAWAHHHHHHBBBYYYBBBBBBBUKKKKKK
+HYYYYYYYYYTTPPPPPPPPPPPPPPFFFFFFFFFFFFMMMXXXXXVVVVVCCCCVVVRRRHHHHHHHCCCCCCCCCTTTTTTYQQYYQQQDDDDPPPVMPMMPPPDAAAAAAAHHHHHBBBBBYYBBBBBBUUUUKKKK
+HHYYYYYYYYYPPPPPPPPPPPRPPPFFRFFVVFFFFVMMXXXXCVVVCCVCXVVVVVRRRHRRHHHSCCCCCCCCCTTTTTTYQQQQQQQDDDDDPVVMMMMMPMAAAAAAAAHHBBBBBBBYYBBBBBUUUUUUKKKK
+HYYYYYYYYYYPPPPPPNNNAPRRRRRRRVVVVVFAVVVMMMXCCCVVCCCCCVVVVVRERRRRRHSSCCCCCCCCCTTTTTTTQQQQQQQQDDDDPVVMMMMMMMMAWAAOOSSSSBBBBBYYBBBBBBUUUUUUUKTK
+YYYYYYYYYYYEEPPPPPNAAPPRRRRRVVVVVVFVVVVVCCXCCCCDCCMMMMMMVVVERRRRRSSSCCCCCCCCCTTTTTQQQQQQQQQQQDDDPZVVMMMMMMMMMMASSSSSVVBBBBBBBBBBBUUUUUUEETTE
+MYYYYYYYYYYYEPPPPPPAAAAARRRRVVVVVVVVVVVVVCCCCCCDCCCCCMMMVDDEEEERRSSSCCCSNTTTTTTTTQQQQQQQQQQQQDDDDZZMMMMMMMMMMMSSSSSSSVBXBBBBBBBBBEEUUUUETTEE
+MYYYYYYYYYYEEPDDAPAAAAAEAAAAVVVVVVVVVVVVVCCCCCCCCCCCCMCCVDDEEEERRSSSCCCSSTTTTTTTYQQQQQQQQQQQQQDDDZZMMMMMMMMMMMMSSSSSSSXXBBBBBBBBBYEEUEEEEEEE
+MYYYYYYYYYYYEAAAAAAAAAAAAAAAVVVVVVVVVVVVVCCCCCCCCCCCCCCCCDEEEEERESSSCCCTTTTTTTTTTQQQQFQQQQQQQQDZZZZZZMZMMMMMMSSSSSSSXXXXXBBBBBBBLEEEEEEEEEEE
+MYYYYYYYYYYYAAAAAAAAAAAAAAAAVVVVVVVVVVVVCCCCCCCCCCCCCCDDDDDDEEEEEESSCCCSTTTTTTTTTQQQQFFQQQQQQQZZZZZZZZZZMMMMMMMYSSSSXXXXXXGBBBBEEEEEEEEEEEEE
+MYYYYYYYYYYMMAAAAAAAAAAAAAAAVVVVVVVVVVVCCCCCCCCCCCCCDDDDDDEEEEEEEESSSSSTTTTTTTTTTTFFFFFQQQQQQQZZZZZZZZZMMMMMMMWSSWWXXXXXXXGGMBBEEEEEEEEEEEEE
+MYYYYYYYYMMMMMAAAAAAAAAAAAAAVVVVVVVVVVCCCCCCCCCCCCCCCDDDDDEEEEEEEESSSSSTTTTTTTTTTFFFFFFFFQQQQQQQZZZZZZJMMMMMMMWSSWXXXXXXXXGMMMMEUEEEEEEEEEEE
+MYYYYYYMMMMMMMAAAAAAAAAUAAVVVVVVVVVVVVCCCCCCCCCCCCCCDDDDDDDEEEEEEEESRSEEETTTTYTFFFFFFFFFFQQQQQQQZZZZZZJMMMMMWWWWWWWXXGXGGGGGMMMEEEEEEEEEEEEE
+YYYXXYYMMMMMMMAAAAAAAAAAAIVVVVVVVVVVVVVCCCCCCCCCCCCCDDDDDDDEEEEEEEEEEEEEETTTTYTFFFFFFFFFFQQQZZZZZZZZZJJJMMMMMMWWWWWXGGGGGGGMMMMEEEEEEEEEEEEE

2024/day13/challenge

@@ -0,0 +1,80 @@
+--- Day 13: Claw Contraption ---
+
+Next up: the lobby of a resort on a tropical island. The Historians take a moment to admire the hexagonal floor tiles before spreading out.
+
+Fortunately, it looks like the resort has a new arcade! Maybe you can win some prizes from the claw machines?
+
+The claw machines here are a little unusual. Instead of a joystick or directional buttons to control the claw, these machines have two buttons labeled A and B. Worse, you can't just put in a token and play; it costs 3 tokens to push the A button and 1 token to push the B button.
+
+With a little experimentation, you figure out that each machine's buttons are configured to move the claw a specific amount to the right (along the X axis) and a specific amount forward (along the Y axis) each time that button is pressed.
+
+Each machine contains one prize; to win the prize, the claw must be positioned exactly above the prize on both the X and Y axes.
+
+You wonder: what is the smallest number of tokens you would have to spend to win as many prizes as possible? You assemble a list of every machine's button behavior and prize location (your puzzle input). For example:
+
+Button A: X+94, Y+34
+Button B: X+22, Y+67
+Prize: X=8400, Y=5400
+
+Button A: X+26, Y+66
+Button B: X+67, Y+21
+Prize: X=12748, Y=12176
+
+Button A: X+17, Y+86
+Button B: X+84, Y+37
+Prize: X=7870, Y=6450
+
+Button A: X+69, Y+23
+Button B: X+27, Y+71
+Prize: X=18641, Y=10279
+
+This list describes the button configuration and prize location of four different claw machines.
+
+For now, consider just the first claw machine in the list:
+
+    Pushing the machine's A button would move the claw 94 units along the X axis and 34 units along the Y axis.
+    Pushing the B button would move the claw 22 units along the X axis and 67 units along the Y axis.
+    The prize is located at X=8400, Y=5400; this means that from the claw's initial position, it would need to move exactly 8400 units along the X axis and exactly 5400 units along the Y axis to be perfectly aligned with the prize in this machine.
+
+The cheapest way to win the prize is by pushing the A button 80 times and the B button 40 times. This would line up the claw along the X axis (because 80*94 + 40*22 = 8400) and along the Y axis (because 80*34 + 40*67 = 5400). Doing this would cost 80*3 tokens for the A presses and 40*1 for the B presses, a total of 280 tokens.
+
+For the second and fourth claw machines, there is no combination of A and B presses that will ever win a prize.
+
+For the third claw machine, the cheapest way to win the prize is by pushing the A button 38 times and the B button 86 times. Doing this would cost a total of 200 tokens.
+
+So, the most prizes you could possibly win is two; the minimum tokens you would have to spend to win all (two) prizes is 480.
+
+You estimate that each button would need to be pressed no more than 100 times to win a prize. How else would someone be expected to play?
+
+Figure out how to win as many prizes as possible. What is the fewest tokens you would have to spend to win all possible prizes?
+
+Your puzzle answer was 37128.
+--- Part Two ---
+
+As you go to win the first prize, you discover that the claw is nowhere near where you expected it would be. Due to a unit conversion error in your measurements, the position of every prize is actually 10000000000000 higher on both the X and Y axis!
+
+Add 10000000000000 to the X and Y position of every prize. After making this change, the example above would now look like this:
+
+Button A: X+94, Y+34
+Button B: X+22, Y+67
+Prize: X=10000000008400, Y=10000000005400
+
+Button A: X+26, Y+66
+Button B: X+67, Y+21
+Prize: X=10000000012748, Y=10000000012176
+
+Button A: X+17, Y+86
+Button B: X+84, Y+37
+Prize: X=10000000007870, Y=10000000006450
+
+Button A: X+69, Y+23
+Button B: X+27, Y+71
+Prize: X=10000000018641, Y=10000000010279
+
+Now, it is only possible to win a prize on the second and fourth claw machines. Unfortunately, it will take many more than 100 presses to do so.
+
+Using the corrected prize coordinates, figure out how to win as many prizes as possible. What is the fewest tokens you would have to spend to win all possible prizes?
+
+Your puzzle answer was 74914228471331.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day13/code.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+import sys, re
+from sympy import solve
+from sympy.abc import x, y
+
+
+def prizes(a, b, prize):
+    sols = solve([a[0] * x + b[0] * y - prize[0], a[1] * x + b[1] * y - prize[1]], x, y, dict=True)
+    if len(sols) > 1: print('help!', sols)
+    if int(sols[0][x]) != sols[0][x] or int(sols[0][y]) != sols[0][y]: return 0
+    else: return 3*sols[0][x]+sols[0][y]
+
+
+if __name__ == '__main__':
+    cms = open(sys.argv[1]).read().split('\n\n')
+    res1, res2 = 0, 0
+    for cm in cms:
+        g = re.search(r'Button A: X\+(?P<xa>\d+), Y\+(?P<ya>\d+)\nButton B: X\+(?P<xb>\d+), Y\+(?P<yb>\d+)\nPrize: X=(?P<px>\d+), Y=(?P<py>\d+)', cm)
+        button_a = (int(g['xa']), int(g['ya']))
+        button_b = (int(g['xb']), int(g['yb']))
+        prize = (int(g['px']), int(g['py']))
+        res1 += prizes(button_a, button_b, prize)
+        prize = (prize[0]+10000000000000, prize[1]+10000000000000)
+        res2 += prizes(button_a, button_b, prize)
+
+    # challenge 1
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    print(f"challenge 2:\n{res2}")
+

2024/day13/example

@@ -0,0 +1,15 @@
+Button A: X+94, Y+34
+Button B: X+22, Y+67
+Prize: X=8400, Y=5400
+
+Button A: X+26, Y+66
+Button B: X+67, Y+21
+Prize: X=12748, Y=12176
+
+Button A: X+17, Y+86
+Button B: X+84, Y+37
+Prize: X=7870, Y=6450
+
+Button A: X+69, Y+23
+Button B: X+27, Y+71
+Prize: X=18641, Y=10279

2024/day14/challenge

@@ -0,0 +1,131 @@
+--- Day 14: Restroom Redoubt ---
+
+One of The Historians needs to use the bathroom; fortunately, you know there's a bathroom near an unvisited location on their list, and so you're all quickly teleported directly to the lobby of Easter Bunny Headquarters.
+
+Unfortunately, EBHQ seems to have "improved" bathroom security again after your last visit. The area outside the bathroom is swarming with robots!
+
+To get The Historian safely to the bathroom, you'll need a way to predict where the robots will be in the future. Fortunately, they all seem to be moving on the tile floor in predictable straight lines.
+
+You make a list (your puzzle input) of all of the robots' current positions (p) and velocities (v), one robot per line. For example:
+
+p=0,4 v=3,-3
+p=6,3 v=-1,-3
+p=10,3 v=-1,2
+p=2,0 v=2,-1
+p=0,0 v=1,3
+p=3,0 v=-2,-2
+p=7,6 v=-1,-3
+p=3,0 v=-1,-2
+p=9,3 v=2,3
+p=7,3 v=-1,2
+p=2,4 v=2,-3
+p=9,5 v=-3,-3
+
+Each robot's position is given as p=x,y where x represents the number of tiles the robot is from the left wall and y represents the number of tiles from the top wall (when viewed from above). So, a position of p=0,0 means the robot is all the way in the top-left corner.
+
+Each robot's velocity is given as v=x,y where x and y are given in tiles per second. Positive x means the robot is moving to the right, and positive y means the robot is moving down. So, a velocity of v=1,-2 means that each second, the robot moves 1 tile to the right and 2 tiles up.
+
+The robots outside the actual bathroom are in a space which is 101 tiles wide and 103 tiles tall (when viewed from above). However, in this example, the robots are in a space which is only 11 tiles wide and 7 tiles tall.
+
+The robots are good at navigating over/under each other (due to a combination of springs, extendable legs, and quadcopters), so they can share the same tile and don't interact with each other. Visually, the number of robots on each tile in this example looks like this:
+
+1.12.......
+...........
+...........
+......11.11
+1.1........
+.........1.
+.......1...
+
+These robots have a unique feature for maximum bathroom security: they can teleport. When a robot would run into an edge of the space they're in, they instead teleport to the other side, effectively wrapping around the edges. Here is what robot p=2,4 v=2,-3 does for the first few seconds:
+
+Initial state:
+...........
+...........
+...........
+...........
+..1........
+...........
+...........
+
+After 1 second:
+...........
+....1......
+...........
+...........
+...........
+...........
+...........
+
+After 2 seconds:
+...........
+...........
+...........
+...........
+...........
+......1....
+...........
+
+After 3 seconds:
+...........
+...........
+........1..
+...........
+...........
+...........
+...........
+
+After 4 seconds:
+...........
+...........
+...........
+...........
+...........
+...........
+..........1
+
+After 5 seconds:
+...........
+...........
+...........
+.1.........
+...........
+...........
+...........
+
+The Historian can't wait much longer, so you don't have to simulate the robots for very long. Where will the robots be after 100 seconds?
+
+In the above example, the number of robots on each tile after 100 seconds has elapsed looks like this:
+
+......2..1.
+...........
+1..........
+.11........
+.....1.....
+...12......
+.1....1....
+
+To determine the safest area, count the number of robots in each quadrant after 100 seconds. Robots that are exactly in the middle (horizontally or vertically) don't count as being in any quadrant, so the only relevant robots are:
+
+..... 2..1.
+..... .....
+1.... .....
+           
+..... .....
+...12 .....
+.1... 1....
+
+In this example, the quadrants contain 1, 3, 4, and 1 robot. Multiplying these together gives a total safety factor of 12.
+
+Predict the motion of the robots in your list within a space which is 101 tiles wide and 103 tiles tall. What will the safety factor be after exactly 100 seconds have elapsed?
+
+Your puzzle answer was 209409792.
+--- Part Two ---
+
+During the bathroom break, someone notices that these robots seem awfully similar to ones built and used at the North Pole. If they're the same type of robots, they should have a hard-coded Easter egg: very rarely, most of the robots should arrange themselves into a picture of a Christmas tree.
+
+What is the fewest number of seconds that must elapse for the robots to display the Easter egg?
+
+Your puzzle answer was 8006.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day14/code.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+
+import sys, re
+
+
+def show(mp):
+    for line in mp:
+        print(''.join(line))
+
+
+def easter_egg(robots, w, h):
+    for steps in range(7000, 10000):
+        print('Steps: ', steps)
+        m = [['.'] * w for _ in range(h)]
+        for r in robots:
+            px, py, vx, vy = map(int, r)
+            nx = (px + steps*vx)%w
+            ny = (py + steps*vy)%h
+            m[ny][nx] = 'X'
+        show(m)
+
+
+if __name__ == '__main__':
+    robot = re.compile(r'p=(?P<px>-?\d+),(?P<py>-?\d+) v=(?P<vx>-?\d+),(?P<vy>-?\d+)')
+    robots = [robot.search(line.strip('\n')).groups() for line in open(sys.argv[1])]
+
+    # space: 11 x 7 for example and 101 x 103 for real input
+    w, h = 101, 103
+    steps = 100
+    q1, q2, q3, q4 = 0,0,0,0
+    for r in robots:
+        px, py, vx, vy = map(int,r)
+        nx = (px + 100*vx)%w
+        ny = (py+100*vy)%h
+        if nx in range(0, w//2):
+            if ny in range(0,h//2): q1 += 1
+            if ny in range(h//2+1,h): q2 += 1
+        if nx in range(w//2+1,w):
+            if ny in range(0,h//2): q3 += 1
+            if ny in range(h//2+1,h): q4 += 1
+
+    # challenge 1
+    res1 = q1 * q2 * q3 * q4
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    easter_egg( robots, w, h)
+    res2 = "8006" # empirical solution
+    print(f"challenge 2:\n{res2}")
+

2024/day14/example

@@ -0,0 +1,12 @@
+p=0,4 v=3,-3
+p=6,3 v=-1,-3
+p=10,3 v=-1,2
+p=2,0 v=2,-1
+p=0,0 v=1,3
+p=3,0 v=-2,-2
+p=7,6 v=-1,-3
+p=3,0 v=-1,-2
+p=9,3 v=2,3
+p=7,3 v=-1,2
+p=2,4 v=2,-3
+p=9,5 v=-3,-3

2024/day14/input

@@ -0,0 +1,500 @@
+p=24,25 v=-48,-26
+p=7,8 v=-96,-2
+p=7,80 v=-66,22
+p=5,18 v=25,-98
+p=45,67 v=26,90
+p=54,71 v=3,67
+p=62,66 v=-5,81
+p=5,82 v=-7,-45
+p=66,89 v=93,-43
+p=70,51 v=33,-7
+p=75,59 v=-20,-77
+p=66,40 v=93,55
+p=32,79 v=79,45
+p=99,13 v=-18,50
+p=13,68 v=-43,-53
+p=84,85 v=-69,-65
+p=37,84 v=11,-57
+p=28,10 v=19,-93
+p=78,82 v=-56,36
+p=20,69 v=-3,-62
+p=39,78 v=27,-1
+p=51,87 v=-32,-17
+p=90,26 v=20,66
+p=35,89 v=-11,20
+p=71,2 v=-80,92
+p=41,40 v=-64,-30
+p=38,8 v=-71,54
+p=72,58 v=36,-80
+p=62,97 v=52,83
+p=96,74 v=90,-23
+p=76,75 v=-43,-9
+p=35,95 v=74,13
+p=90,17 v=99,6
+p=61,26 v=17,81
+p=43,71 v=-43,-51
+p=6,18 v=-62,-9
+p=37,62 v=-23,-11
+p=60,97 v=36,-64
+p=54,63 v=-23,-95
+p=76,85 v=24,-4
+p=38,54 v=-38,-95
+p=48,18 v=52,-49
+p=45,36 v=-75,-4
+p=31,87 v=64,50
+p=4,87 v=68,9
+p=25,40 v=99,53
+p=74,18 v=-73,-71
+p=5,22 v=76,65
+p=66,12 v=96,-64
+p=20,71 v=68,-3
+p=3,20 v=4,-77
+p=27,43 v=49,55
+p=25,70 v=-52,-84
+p=90,64 v=39,52
+p=32,69 v=82,88
+p=2,97 v=-78,76
+p=56,6 v=-71,-27
+p=91,31 v=84,-41
+p=25,12 v=-91,-51
+p=7,43 v=-11,59
+p=3,55 v=-6,-44
+p=83,102 v=9,-76
+p=54,40 v=-94,5
+p=3,77 v=80,45
+p=32,6 v=3,-35
+p=14,34 v=-74,-41
+p=16,30 v=-21,-86
+p=34,71 v=-75,-62
+p=79,11 v=67,-10
+p=80,11 v=61,9
+p=14,84 v=-59,-83
+p=73,66 v=-56,3
+p=26,61 v=41,-70
+p=45,35 v=-97,40
+p=84,39 v=-99,55
+p=95,50 v=-66,-56
+p=17,35 v=-33,-74
+p=33,51 v=4,-22
+p=6,77 v=-49,-45
+p=9,61 v=28,85
+p=14,91 v=-70,-12
+p=88,73 v=49,-14
+p=73,39 v=-16,73
+p=68,83 v=25,60
+p=3,31 v=83,62
+p=31,102 v=30,-49
+p=29,29 v=45,-23
+p=47,37 v=97,26
+p=35,46 v=87,39
+p=13,36 v=-74,-37
+p=81,33 v=81,-17
+p=6,20 v=-14,43
+p=94,41 v=89,-72
+p=55,44 v=-91,95
+p=92,87 v=-17,64
+p=54,79 v=-57,-58
+p=53,49 v=-19,-84
+p=25,21 v=56,-82
+p=82,53 v=51,-85
+p=75,27 v=69,-4
+p=21,87 v=61,-6
+p=6,63 v=-74,-77
+p=20,4 v=89,-33
+p=21,25 v=-78,62
+p=24,0 v=-74,43
+p=34,86 v=-43,74
+p=72,83 v=-35,85
+p=47,17 v=41,87
+p=3,73 v=-77,-36
+p=98,96 v=-73,75
+p=66,93 v=-26,20
+p=48,79 v=56,-69
+p=91,89 v=-47,9
+p=49,11 v=96,-47
+p=33,4 v=-86,-16
+p=76,45 v=-46,3
+p=12,28 v=-40,36
+p=64,99 v=-79,-83
+p=19,83 v=-10,-3
+p=87,57 v=84,-33
+p=47,69 v=-64,-58
+p=56,9 v=33,-60
+p=98,94 v=-14,-25
+p=60,59 v=-1,-41
+p=18,91 v=-93,-85
+p=24,21 v=98,-85
+p=51,83 v=-23,45
+p=12,41 v=-41,-34
+p=8,86 v=-55,-50
+p=23,48 v=-11,73
+p=46,24 v=-4,-75
+p=12,82 v=-6,-47
+p=78,37 v=-16,-55
+p=13,59 v=68,-66
+p=63,100 v=44,83
+p=99,66 v=31,-65
+p=21,97 v=17,-7
+p=1,101 v=91,-90
+p=16,74 v=90,8
+p=15,102 v=98,-9
+p=31,34 v=12,91
+p=49,65 v=-8,96
+p=48,62 v=-41,-58
+p=57,13 v=-72,61
+p=82,30 v=-69,47
+p=31,21 v=41,-44
+p=25,93 v=-30,-69
+p=33,45 v=4,-96
+p=57,15 v=59,10
+p=6,74 v=61,-43
+p=9,43 v=-64,51
+p=69,67 v=10,-51
+p=44,93 v=60,93
+p=39,77 v=94,-39
+p=38,86 v=86,12
+p=43,98 v=26,75
+p=64,49 v=-87,-84
+p=13,64 v=42,30
+p=69,91 v=-39,-91
+p=83,100 v=-12,61
+p=28,66 v=-62,-27
+p=15,90 v=-3,-46
+p=0,42 v=27,18
+p=56,99 v=-24,-67
+p=70,68 v=-61,74
+p=7,8 v=-70,35
+p=5,100 v=16,-13
+p=83,49 v=-22,73
+p=63,18 v=64,-56
+p=78,84 v=28,-57
+p=89,39 v=36,26
+p=72,31 v=-80,51
+p=72,88 v=8,70
+p=29,8 v=34,65
+p=36,11 v=-86,39
+p=16,27 v=12,-52
+p=63,63 v=59,63
+p=1,4 v=-21,-79
+p=95,86 v=-81,-79
+p=30,27 v=90,21
+p=17,40 v=81,-5
+p=47,24 v=47,93
+p=4,23 v=31,-49
+p=61,34 v=-42,-78
+p=34,61 v=-62,44
+p=48,18 v=-12,-97
+p=32,81 v=-74,-75
+p=61,15 v=96,-98
+p=8,86 v=87,-54
+p=26,95 v=-63,71
+p=94,61 v=13,48
+p=26,101 v=94,-57
+p=24,102 v=4,2
+p=83,56 v=-56,44
+p=96,37 v=91,-8
+p=60,43 v=-18,5
+p=93,68 v=92,1
+p=79,57 v=-9,77
+p=65,68 v=-16,-51
+p=26,28 v=-44,-80
+p=39,22 v=-75,-23
+p=90,0 v=-73,83
+p=66,88 v=10,75
+p=61,55 v=-87,52
+p=43,2 v=45,68
+p=85,25 v=-91,-12
+p=14,79 v=-50,-20
+p=32,98 v=22,21
+p=85,59 v=74,-5
+p=4,50 v=-14,8
+p=99,85 v=35,-28
+p=76,80 v=-2,64
+p=49,36 v=-8,14
+p=60,65 v=-12,67
+p=4,84 v=-98,-82
+p=0,92 v=-74,-50
+p=88,94 v=26,36
+p=20,37 v=-7,-8
+p=81,28 v=21,-59
+p=95,33 v=-39,36
+p=26,45 v=-86,23
+p=82,19 v=2,-12
+p=85,60 v=32,-44
+p=5,60 v=79,10
+p=53,33 v=-12,62
+p=40,79 v=-71,-47
+p=75,31 v=-95,95
+p=43,2 v=41,-86
+p=17,86 v=-81,82
+p=10,15 v=-31,46
+p=7,74 v=-25,89
+p=69,8 v=-61,32
+p=82,65 v=-39,74
+p=73,101 v=-12,-79
+p=51,9 v=93,-16
+p=95,56 v=13,15
+p=96,67 v=34,29
+p=19,91 v=-31,89
+p=2,43 v=-96,-55
+p=68,60 v=17,-91
+p=17,86 v=8,-43
+p=5,95 v=16,71
+p=49,20 v=37,21
+p=6,67 v=-40,96
+p=47,95 v=-32,-76
+p=45,71 v=-81,2
+p=46,31 v=-34,-89
+p=49,17 v=-79,-97
+p=66,82 v=18,-95
+p=69,86 v=81,-21
+p=5,87 v=-10,-21
+p=84,81 v=47,97
+p=89,9 v=13,-60
+p=34,15 v=-67,-38
+p=51,46 v=-28,-91
+p=94,99 v=-21,-35
+p=15,20 v=3,48
+p=26,72 v=-32,13
+p=80,5 v=-43,-20
+p=64,82 v=-49,-75
+p=56,58 v=-94,81
+p=29,86 v=79,16
+p=98,60 v=-36,4
+p=23,47 v=-37,77
+p=48,66 v=63,78
+p=48,92 v=-97,74
+p=58,86 v=85,27
+p=99,85 v=57,97
+p=98,53 v=-28,-25
+p=72,44 v=-48,31
+p=35,67 v=75,30
+p=22,11 v=38,13
+p=95,41 v=-85,36
+p=3,55 v=-85,-66
+p=50,57 v=-94,11
+p=58,2 v=-42,-64
+p=45,3 v=-97,10
+p=1,30 v=97,-31
+p=75,68 v=13,-58
+p=79,101 v=62,-98
+p=20,26 v=83,25
+p=49,4 v=25,-16
+p=46,54 v=89,7
+p=86,42 v=-43,-81
+p=6,3 v=-99,-5
+p=74,50 v=-61,22
+p=40,13 v=-38,-57
+p=5,54 v=-5,-65
+p=55,66 v=10,-25
+p=52,82 v=-55,-28
+p=70,18 v=-68,-49
+p=54,10 v=-38,-16
+p=79,35 v=54,-45
+p=95,64 v=80,6
+p=88,62 v=-56,78
+p=65,28 v=-39,43
+p=69,29 v=-35,-78
+p=68,99 v=-5,79
+p=37,22 v=30,-49
+p=98,55 v=-92,-84
+p=3,1 v=-10,-64
+p=56,60 v=49,26
+p=38,25 v=-56,91
+p=93,22 v=46,87
+p=97,11 v=13,-86
+p=16,15 v=23,76
+p=34,58 v=45,15
+p=20,59 v=-12,72
+p=30,78 v=-25,50
+p=61,59 v=-53,37
+p=33,2 v=75,-24
+p=36,5 v=81,43
+p=90,93 v=-10,50
+p=60,74 v=14,96
+p=56,40 v=-56,96
+p=79,6 v=77,-71
+p=87,64 v=-2,-62
+p=25,66 v=64,-47
+p=4,13 v=-66,54
+p=47,57 v=67,59
+p=39,64 v=90,-88
+p=81,68 v=-73,52
+p=59,36 v=-42,-89
+p=0,4 v=14,83
+p=20,5 v=-67,-9
+p=100,45 v=20,-44
+p=85,27 v=54,-48
+p=58,54 v=-16,-11
+p=71,4 v=-54,42
+p=22,98 v=83,-46
+p=32,7 v=-26,32
+p=33,52 v=37,-62
+p=82,33 v=-28,14
+p=90,11 v=-88,-97
+p=39,79 v=52,45
+p=60,15 v=70,-79
+p=3,38 v=-70,-29
+p=10,80 v=27,-10
+p=22,22 v=-89,7
+p=23,29 v=-74,49
+p=45,34 v=26,51
+p=59,63 v=-3,41
+p=9,28 v=-82,89
+p=18,42 v=-10,-67
+p=2,80 v=-3,-80
+p=94,73 v=13,89
+p=89,73 v=-50,-40
+p=22,85 v=71,-38
+p=20,99 v=52,-10
+p=40,89 v=52,27
+p=47,99 v=-18,59
+p=71,55 v=25,-47
+p=69,102 v=-31,-64
+p=67,43 v=-91,44
+p=79,27 v=69,-72
+p=43,53 v=89,22
+p=59,30 v=26,-46
+p=53,54 v=37,-33
+p=72,11 v=-80,-27
+p=56,63 v=33,-14
+p=53,61 v=24,86
+p=40,77 v=-17,-66
+p=88,88 v=53,33
+p=40,82 v=56,-76
+p=16,2 v=60,-94
+p=17,83 v=-78,-3
+p=16,99 v=-44,13
+p=88,19 v=-73,40
+p=61,16 v=36,-30
+p=1,90 v=-21,-80
+p=65,92 v=-95,-30
+p=100,98 v=24,31
+p=45,54 v=-42,30
+p=87,60 v=56,-57
+p=97,43 v=75,-96
+p=54,64 v=3,69
+p=73,29 v=-5,84
+p=69,5 v=-99,-27
+p=18,8 v=98,94
+p=9,4 v=92,61
+p=69,50 v=38,34
+p=9,52 v=-85,74
+p=33,16 v=34,-86
+p=38,68 v=15,45
+p=93,82 v=25,17
+p=22,34 v=6,-51
+p=40,81 v=79,-6
+p=62,20 v=23,86
+p=2,21 v=43,-60
+p=19,79 v=-74,38
+p=70,3 v=-20,-81
+p=57,66 v=-4,-22
+p=54,36 v=65,-30
+p=48,83 v=-60,-43
+p=71,41 v=92,-56
+p=90,66 v=-77,-62
+p=65,15 v=-24,-79
+p=49,48 v=-53,81
+p=41,15 v=71,-49
+p=59,58 v=83,18
+p=27,84 v=-38,64
+p=94,34 v=2,36
+p=12,34 v=-55,-30
+p=64,40 v=-27,29
+p=74,28 v=-91,-63
+p=81,86 v=-77,-10
+p=83,26 v=32,47
+p=20,44 v=-63,-96
+p=1,48 v=-51,-11
+p=69,18 v=-5,-82
+p=63,18 v=16,-28
+p=88,1 v=-2,46
+p=80,44 v=2,33
+p=10,35 v=72,10
+p=79,35 v=45,-72
+p=6,13 v=-18,3
+p=40,43 v=41,-4
+p=100,18 v=-51,-93
+p=71,54 v=94,37
+p=4,93 v=50,97
+p=9,56 v=76,-77
+p=89,38 v=-50,92
+p=96,31 v=35,58
+p=73,11 v=96,-86
+p=36,67 v=-60,27
+p=44,77 v=-82,71
+p=67,53 v=96,61
+p=14,82 v=72,42
+p=96,14 v=65,98
+p=91,8 v=78,-72
+p=44,80 v=-22,-67
+p=47,59 v=-75,48
+p=90,52 v=-65,-3
+p=10,41 v=-29,-70
+p=57,90 v=-75,13
+p=42,43 v=67,-85
+p=51,72 v=33,79
+p=33,87 v=60,56
+p=93,55 v=-77,-44
+p=31,29 v=64,-19
+p=91,81 v=21,86
+p=100,99 v=-66,-24
+p=68,90 v=29,23
+p=43,25 v=-6,-49
+p=62,37 v=-98,-74
+p=57,11 v=97,-83
+p=89,85 v=74,14
+p=29,18 v=48,-13
+p=84,92 v=-43,-93
+p=33,5 v=19,94
+p=2,85 v=-58,12
+p=18,95 v=-41,42
+p=75,59 v=34,91
+p=0,56 v=-51,-58
+p=85,10 v=-91,-37
+p=64,20 v=-42,-23
+p=28,30 v=-27,7
+p=18,46 v=-96,73
+p=33,93 v=-93,-53
+p=29,64 v=30,-29
+p=65,53 v=-42,15
+p=26,92 v=11,62
+p=69,34 v=-99,-4
+p=44,15 v=-94,-64
+p=24,42 v=-22,88
+p=37,8 v=41,87
+p=22,77 v=-54,-54
+p=9,13 v=-18,85
+p=90,97 v=46,36
+p=37,61 v=64,93
+p=96,78 v=80,-47
+p=92,62 v=6,74
+p=19,20 v=-44,-23
+p=63,43 v=-16,-4
+p=85,0 v=-73,-64
+p=37,53 v=-11,-81
+p=28,55 v=11,-40
+p=77,22 v=-72,-67
+p=88,86 v=47,60
+p=43,50 v=-19,-95
+p=46,28 v=11,3
+p=16,5 v=28,66
+p=85,85 v=-36,-98
+p=95,15 v=9,17
+p=46,70 v=-64,82
+p=24,49 v=38,-84
+p=94,5 v=-24,-83
+p=59,73 v=-98,49
+p=13,75 v=72,12
+p=68,27 v=-57,-5
+p=13,71 v=-55,-84
+p=57,12 v=-68,28
+p=21,90 v=-45,16
+p=38,4 v=-93,21
+p=66,96 v=-72,-13
+p=34,95 v=-41,-90
+p=85,39 v=-18,-30
+p=3,94 v=9,97
+p=89,12 v=5,-67
+p=44,58 v=-4,-62

2024/day15/challenge

@@ -0,0 +1,419 @@
+--- Day 15: Warehouse Woes ---
+
+You appear back inside your own mini submarine! Each Historian drives their mini submarine in a different direction; maybe the Chief has his own submarine down here somewhere as well?
+
+You look up to see a vast school of lanternfish swimming past you. On closer inspection, they seem quite anxious, so you drive your mini submarine over to see if you can help.
+
+Because lanternfish populations grow rapidly, they need a lot of food, and that food needs to be stored somewhere. That's why these lanternfish have built elaborate warehouse complexes operated by robots!
+
+These lanternfish seem so anxious because they have lost control of the robot that operates one of their most important warehouses! It is currently running amok, pushing around boxes in the warehouse with no regard for lanternfish logistics or lanternfish inventory management strategies.
+
+Right now, none of the lanternfish are brave enough to swim up to an unpredictable robot so they could shut it off. However, if you could anticipate the robot's movements, maybe they could find a safe option.
+
+The lanternfish already have a map of the warehouse and a list of movements the robot will attempt to make (your puzzle input). The problem is that the movements will sometimes fail as boxes are shifted around, making the actual movements of the robot difficult to predict.
+
+For example:
+
+##########
+#..O..O.O#
+#......O.#
+#.OO..O.O#
+#..O@..O.#
+#O#..O...#
+#O..O..O.#
+#.OO.O.OO#
+#....O...#
+##########
+
+<vv>^<v^>v>^vv^v>v<>v^v<v<^vv<<<^><<><>>v<vvv<>^v^>^<<<><<v<<<v^vv^v>^
+vvv<<^>^v^^><<>>><>^<<><^vv^^<>vvv<>><^^v>^>vv<>v<<<<v<^v>^<^^>>>^<v<v
+><>vv>v^v^<>><>>>><^^>vv>v<^^^>>v^v^<^^>v^^>v^<^v>v<>>v^v^<v>v^^<^^vv<
+<<v<^>>^^^^>>>v^<>vvv^><v<<<>^^^vv^<vvv>^>v<^^^^v<>^>vvvv><>>v^<<^^^^^
+^><^><>>><>^^<<^^v>>><^<v>^<vv>>v>>>^v><>^v><<<<v>>v<v<v>vvv>^<><<>^><
+^>><>^v<><^vvv<^^<><v<<<<<><^v<<<><<<^^<v<^^^><^>>^<v^><<<^>>^v<v^v<v^
+>^>>^v>vv>^<<^v<>><<><<v<<v><>v<^vv<<<>^^v^>^^>>><<^v>>v^v><^^>>^<>vv^
+<><^^>^^^<><vvvvv^v<v<<>^v<v>v<<^><<><<><<<^^<<<^<<>><<><^^^>^^<>^>v<>
+^^>vv<^v^v<vv>^<><v<^v>^^^>>>^^vvv^>vvv<>>>^<^>>>>>^<<^v>^vvv<>^<><<v>
+v^^>>><<^^<>>^v^<v^vv<>v^<<>^<^v^v><^<<<><<^<v><v<>vv>>v><v^<vv<>v^<<^
+
+As the robot (@) attempts to move, if there are any boxes (O) in the way, the robot will also attempt to push those boxes. However, if this action would cause the robot or a box to move into a wall (#), nothing moves instead, including the robot. The initial positions of these are shown on the map at the top of the document the lanternfish gave you.
+
+The rest of the document describes the moves (^ for up, v for down, < for left, > for right) that the robot will attempt to make, in order. (The moves form a single giant sequence; they are broken into multiple lines just to make copy-pasting easier. Newlines within the move sequence should be ignored.)
+
+Here is a smaller example to get started:
+
+########
+#..O.O.#
+##@.O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+<^^>>>vv<v>>v<<
+
+Were the robot to attempt the given sequence of moves, it would push around the boxes as follows:
+
+Initial state:
+########
+#..O.O.#
+##@.O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+Move <:
+########
+#..O.O.#
+##@.O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+Move ^:
+########
+#.@O.O.#
+##..O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+Move ^:
+########
+#.@O.O.#
+##..O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+Move >:
+########
+#..@OO.#
+##..O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+Move >:
+########
+#...@OO#
+##..O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+Move >:
+########
+#...@OO#
+##..O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+Move v:
+########
+#....OO#
+##..@..#
+#...O..#
+#.#.O..#
+#...O..#
+#...O..#
+########
+
+Move v:
+########
+#....OO#
+##..@..#
+#...O..#
+#.#.O..#
+#...O..#
+#...O..#
+########
+
+Move <:
+########
+#....OO#
+##.@...#
+#...O..#
+#.#.O..#
+#...O..#
+#...O..#
+########
+
+Move v:
+########
+#....OO#
+##.....#
+#..@O..#
+#.#.O..#
+#...O..#
+#...O..#
+########
+
+Move >:
+########
+#....OO#
+##.....#
+#...@O.#
+#.#.O..#
+#...O..#
+#...O..#
+########
+
+Move >:
+########
+#....OO#
+##.....#
+#....@O#
+#.#.O..#
+#...O..#
+#...O..#
+########
+
+Move v:
+########
+#....OO#
+##.....#
+#.....O#
+#.#.O@.#
+#...O..#
+#...O..#
+########
+
+Move <:
+########
+#....OO#
+##.....#
+#.....O#
+#.#O@..#
+#...O..#
+#...O..#
+########
+
+Move <:
+########
+#....OO#
+##.....#
+#.....O#
+#.#O@..#
+#...O..#
+#...O..#
+########
+
+The larger example has many more moves; after the robot has finished those moves, the warehouse would look like this:
+
+##########
+#.O.O.OOO#
+#........#
+#OO......#
+#OO@.....#
+#O#.....O#
+#O.....OO#
+#O.....OO#
+#OO....OO#
+##########
+
+The lanternfish use their own custom Goods Positioning System (GPS for short) to track the locations of the boxes. The GPS coordinate of a box is equal to 100 times its distance from the top edge of the map plus its distance from the left edge of the map. (This process does not stop at wall tiles; measure all the way to the edges of the map.)
+
+So, the box shown below has a distance of 1 from the top edge of the map and 4 from the left edge of the map, resulting in a GPS coordinate of 100 * 1 + 4 = 104.
+
+#######
+#...O..
+#......
+
+The lanternfish would like to know the sum of all boxes' GPS coordinates after the robot finishes moving. In the larger example, the sum of all boxes' GPS coordinates is 10092. In the smaller example, the sum is 2028.
+
+Predict the motion of the robot and boxes in the warehouse. After the robot is finished moving, what is the sum of all boxes' GPS coordinates?
+
+Your puzzle answer was 1563092.
+--- Part Two ---
+
+The lanternfish use your information to find a safe moment to swim in and turn off the malfunctioning robot! Just as they start preparing a festival in your honor, reports start coming in that a second warehouse's robot is also malfunctioning.
+
+This warehouse's layout is surprisingly similar to the one you just helped. There is one key difference: everything except the robot is twice as wide! The robot's list of movements doesn't change.
+
+To get the wider warehouse's map, start with your original map and, for each tile, make the following changes:
+
+    If the tile is #, the new map contains ## instead.
+    If the tile is O, the new map contains [] instead.
+    If the tile is ., the new map contains .. instead.
+    If the tile is @, the new map contains @. instead.
+
+This will produce a new warehouse map which is twice as wide and with wide boxes that are represented by []. (The robot does not change size.)
+
+The larger example from before would now look like this:
+
+####################
+##....[]....[]..[]##
+##............[]..##
+##..[][]....[]..[]##
+##....[]@.....[]..##
+##[]##....[]......##
+##[]....[]....[]..##
+##..[][]..[]..[][]##
+##........[]......##
+####################
+
+Because boxes are now twice as wide but the robot is still the same size and speed, boxes can be aligned such that they directly push two other boxes at once. For example, consider this situation:
+
+#######
+#...#.#
+#.....#
+#..OO@#
+#..O..#
+#.....#
+#######
+
+<vv<<^^<<^^
+
+After appropriately resizing this map, the robot would push around these boxes as follows:
+
+Initial state:
+##############
+##......##..##
+##..........##
+##....[][]@.##
+##....[]....##
+##..........##
+##############
+
+Move <:
+##############
+##......##..##
+##..........##
+##...[][]@..##
+##....[]....##
+##..........##
+##############
+
+Move v:
+##############
+##......##..##
+##..........##
+##...[][]...##
+##....[].@..##
+##..........##
+##############
+
+Move v:
+##############
+##......##..##
+##..........##
+##...[][]...##
+##....[]....##
+##.......@..##
+##############
+
+Move <:
+##############
+##......##..##
+##..........##
+##...[][]...##
+##....[]....##
+##......@...##
+##############
+
+Move <:
+##############
+##......##..##
+##..........##
+##...[][]...##
+##....[]....##
+##.....@....##
+##############
+
+Move ^:
+##############
+##......##..##
+##...[][]...##
+##....[]....##
+##.....@....##
+##..........##
+##############
+
+Move ^:
+##############
+##......##..##
+##...[][]...##
+##....[]....##
+##.....@....##
+##..........##
+##############
+
+Move <:
+##############
+##......##..##
+##...[][]...##
+##....[]....##
+##....@.....##
+##..........##
+##############
+
+Move <:
+##############
+##......##..##
+##...[][]...##
+##....[]....##
+##...@......##
+##..........##
+##############
+
+Move ^:
+##############
+##......##..##
+##...[][]...##
+##...@[]....##
+##..........##
+##..........##
+##############
+
+Move ^:
+##############
+##...[].##..##
+##...@.[]...##
+##....[]....##
+##..........##
+##..........##
+##############
+
+This warehouse also uses GPS to locate the boxes. For these larger boxes, distances are measured from the edge of the map to the closest edge of the box in question. So, the box shown below has a distance of 1 from the top edge of the map and 5 from the left edge of the map, resulting in a GPS coordinate of 100 * 1 + 5 = 105.
+
+##########
+##...[]...
+##........
+
+In the scaled-up version of the larger example from above, after the robot has finished all of its moves, the warehouse would look like this:
+
+####################
+##[].......[].[][]##
+##[]...........[].##
+##[]........[][][]##
+##[]......[]....[]##
+##..##......[]....##
+##..[]............##
+##..@......[].[][]##
+##......[][]..[]..##
+####################
+
+The sum of these boxes' GPS coordinates is 9021.
+
+Predict the motion of the robot and boxes in this new, scaled-up warehouse. What is the sum of all boxes' final GPS coordinates?
+
+Your puzzle answer was 1582688.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day15/code.py

@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+
+import sys, os, time
+from copy import deepcopy
+
+
+def show(m):
+    for line in m:
+        sys.stdout.write("\r"+''.join(line)+'\n') 
+    sys.stdout.flush()
+    time.sleep(0.2)
+
+
+def gps(x, y):
+    return 100*y + x
+
+
+def move_stone(m, x, y, move):
+    dir = {'^': (0,-1), '>': (1,0), 'v': (0,1), '<': (-1,0)}
+    nx, ny = x+dir[move][0], y+dir[move][1]
+    if m[ny][nx] == '#': return
+    if m[ny][nx] == 'O': move_stone(m, nx, ny, move)
+    if m[ny][nx] == '.':
+        m[ny][nx] = 'O'
+        m[y][x] = '.'
+        return
+
+
+def move_box_h(m, x, y, move):
+    dir = {'^': (0,-1), '>': (1,0), 'v': (0,1), '<': (-1,0)}
+    nx, ny = x+dir[move][0], y
+    sym = m[y][x]
+    if m[ny][nx] == '#': return
+    if m[ny][nx] in ['[', ']']: move_box_h(m, nx, ny, move)
+    if m[ny][nx] == '.':
+        m[ny][nx] = sym
+        m[y][x] = '.'
+    return
+
+
+def move_box_v(m, x, y, move):
+    dir = {'^': (0,-1), '>': (1,0), 'v': (0,1), '<': (-1,0)}
+    if m[y][x] == '[': x1, x2 = x, x+1
+    else: x1, x2 = x-1, x
+    nx1, nx2, ny = x1+dir[move][0], x2+dir[move][0], y+dir[move][1]
+    if m[ny][nx1] == '#' or m[ny][nx2] == '#': return m
+    if m[ny][nx1] == ']' and m[ny][nx2] == '[':
+        mp = deepcopy(m)
+        mp = move_box_v(mp, nx1, ny, move)
+        mp = move_box_v(mp, nx2, ny, move)
+        if mp[ny][nx1] == '.' and mp[ny][nx2] == '.': m = deepcopy(mp)
+    elif m[ny][nx1] in ['[', ']']: m = move_box_v(m, nx1, ny, move)
+    elif m[ny][nx2] in ['[', ']']: m = move_box_v(m, nx2, ny, move)
+    if m[ny][nx1] == '.' and m[ny][nx2] == '.':
+        m[ny][nx1] = '['
+        m[ny][nx2] = ']'
+        m[y][x1] = '.'
+        m[y][x2] = '.'
+        return m
+    return m
+ 
+
+def move(m, x, y, move):
+    dir = {'^': (0,-1), '>': (1,0), 'v': (0,1), '<': (-1,0)}
+    nx, ny = x+dir[move][0], y+dir[move][1]
+    if m[ny][nx] == '#': return m, x, y
+    if m[ny][nx] == 'O': move_stone(m, nx, ny, move)
+    if m[ny][nx] in ['[',']'] and move in ['v', '^']: 
+        m = move_box_v(m, nx, ny, move)
+    elif m[ny][nx] in ['[',']'] and move in ['<', '>']: 
+        move_box_h(m, nx, ny, move)
+    if m[ny][nx] == '.':
+        m[ny][nx] = '@'
+        m[y][x] = '.'
+        return m, nx, ny
+    else: return m, x, y
+
+
+if __name__ == '__main__':
+    mp, moves = open(sys.argv[1]).read().split('\n\n')
+    mp = [list(y.strip('\n')) for y in mp.split('\n')]
+    moves = list(''.join([m.strip('\n') for m in moves]))
+    wm = []
+    for y, l in enumerate(mp):
+        line = []
+        for x, r in enumerate(l):
+            if r == '#': line += ['#', '#']
+            elif r == '.': line += ['.', '.']
+            elif r == 'O': line += ['[', ']']
+            elif r == '@':
+                wrx, wry = len(line), y
+                line += ['@', '.']
+                rx, ry = x, y
+        wm.append(line)
+    for mov in moves:
+        mp, rx, ry = move(mp, rx, ry, mov)
+        wm, wrx, wry = move(wm, wrx, wry, mov)
+
+    # challenge 1
+    res1 = 0
+    for y, m in enumerate(mp):
+        for x, t in enumerate(m):
+            if t == 'O': res1 += gps(x, y)
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2
+    res2 = 0
+    for y, m in enumerate(wm):
+        for x, t in enumerate(m):
+            if t == '[': res2 += gps(x, y)
+    print(f"challenge 2:\n{res2}")
+

2024/day15/example

@@ -0,0 +1,21 @@
+##########
+#..O..O.O#
+#......O.#
+#.OO..O.O#
+#..O@..O.#
+#O#..O...#
+#O..O..O.#
+#.OO.O.OO#
+#....O...#
+##########
+
+<vv>^<v^>v>^vv^v>v<>v^v<v<^vv<<<^><<><>>v<vvv<>^v^>^<<<><<v<<<v^vv^v>^
+vvv<<^>^v^^><<>>><>^<<><^vv^^<>vvv<>><^^v>^>vv<>v<<<<v<^v>^<^^>>>^<v<v
+><>vv>v^v^<>><>>>><^^>vv>v<^^^>>v^v^<^^>v^^>v^<^v>v<>>v^v^<v>v^^<^^vv<
+<<v<^>>^^^^>>>v^<>vvv^><v<<<>^^^vv^<vvv>^>v<^^^^v<>^>vvvv><>>v^<<^^^^^
+^><^><>>><>^^<<^^v>>><^<v>^<vv>>v>>>^v><>^v><<<<v>>v<v<v>vvv>^<><<>^><
+^>><>^v<><^vvv<^^<><v<<<<<><^v<<<><<<^^<v<^^^><^>>^<v^><<<^>>^v<v^v<v^
+>^>>^v>vv>^<<^v<>><<><<v<<v><>v<^vv<<<>^^v^>^^>>><<^v>>v^v><^^>>^<>vv^
+<><^^>^^^<><vvvvv^v<v<<>^v<v>v<<^><<><<><<<^^<<<^<<>><<><^^^>^^<>^>v<>
+^^>vv<^v^v<vv>^<><v<^v>^^^>>>^^vvv^>vvv<>>>^<^>>>>>^<<^v>^vvv<>^<><<v>
+v^^>>><<^^<>>^v^<v^vv<>v^<<>^<^v^v><^<<<><<^<v><v<>vv>>v><v^<vv<>v^<<

2024/day15/example2

@@ -0,0 +1,10 @@
+########
+#..O.O.#
+##@.O..#
+#...O..#
+#.#.O..#
+#...O..#
+#......#
+########
+
+<^^>>>vv<v>>v<<

2024/day15/example3

@@ -0,0 +1,9 @@
+#######
+#...#.#
+#.....#
+#..OO@#
+#..O..#
+#.....#
+#######
+
+<vv<<^^<<^^

2024/day15/input

@@ -0,0 +1,71 @@
+##################################################
+#..OO..O.O....O...O..O...O.......O...OO##....O.OO#
+#O.#..#OOO#..O..OO...O.O.....OO..O#O#.OOO.....#..#
+#.....O.......OO.#OO....#O.OO.O..OO.O.O.O..##....#
+#.O....O...O#...#...OO..#..O........#O..#..O..O..#
+#O....O...O.O..OO..OO..#OO.#OO.O......##..O..O...#
+#..O.##..#O...O...#.#.O.O..O.#......O..#.#...O...#
+#O.O.........O..O........OO....OO......O.....O#..#
+#...O....#..O..O........O......O.#.....O..O#..O..#
+#.....#OOOOOOO.O.....O.OOO.#.#.........O#O....O..#
+#.........OO#...O.O.#.O..O.....O..#.O..OO.O.#..O.#
+#OOO...............#O.OOO..O#....O.....O...#....O#
+#....O...O.O.#....O.O.O.OO..#......OO..O.OO.O...O#
+#O.O..OO..#...........#O...O.O#...O...O..O..O.O..#
+#OOO...O...#O.O.O...OO..#OO.OO#..O...O..OO...O...#
+#..#........#...O..O...#.O..OO..#O.OO.#O......O..#
+#O.........O.#O.......O.#.O.O....O#...OO...O...OO#
+#.#...O.O....O.O....#...#.O...............O..#.OO#
+#...O.....O..OOO...O..#O..#.......#OO..O..#...O..#
+#OO.O#..O.#..O.#.........OO...O.OO..O....OO.O....#
+#.O..O...O.......OOO....OO....O.OOO........O..O..#
+#O..O..#..O.O.O..O.O.O..#O.......O..OO..O..O.....#
+##O#.....#.O.....O#......O.........OOO.O...#.OOO.#
+#O.#OO...O..#.O#.O..O.##OO......#..#OO.......O.#O#
+#..O...#..O....OOO..#...@....OO.#.O#..OO......O..#
+#.O#.....O...O..O#..O.OOO.OO.#O.O.O..O....O..OO.##
+#..#.#.O#....#..O.O.OOO.......OO......O.OOO......#
+#.....O....O...#.OO.OOO..#...O..O...O..#..O#OO.O.#
+#OO.O.......O#...O.O......OO....#.O...OO.O..O.O..#
+##O..O..O##..O..OOOO...O..#O..O.OO.O....O....#.#.#
+##..OO#O.##...#O.OOO.......O.....O..O..OO.O...OOO#
+#...#..OO.......O.O..OO..........O...OO....OO.O#.#
+#..O.O..#OO.....O.........O#O.#..#..O...O.OO..O..#
+#..O.#O...O............#O.O.O...O..O.O...#...OOO##
+#...#OO.O#.OO.......#.......O..O.##....OO....OOOO#
+#.O.....O..O...O.....#..O.....O...OO.O.O.......OO#
+#...#O...O.O.#O..O..#..OOO#....O##....#OO.#.#OOOO#
+#.O.#OOO......O...O..O.#O.OO..O.......O...O..O..##
+#O.....O.#....O.OOO..O...#O#O....OOOO........#...#
+#O...#.O...O.OO..O.O.O.............OO.O.#...#.O###
+#O....OO.O.OOO#...#..#.....O#O..O..O.O..O#.O...O.#
+#.........O#.##.OO..O..O..##..O........O..OOO....#
+#.#....O.....O.O......O.O.O...OO.O....O..#O..O...#
+#....O##O.O..#....O.OO.O...O..O..OOO..O...#..O...#
+#O#....#.......O..O..#..OO.......O.OO.....OO.O...#
+#O...O#OOO.O......O......OO..O.#.O.....O.O....OOO#
+##....O##...#O.....O.#........OOOOO#..O....#.O.O.#
+#O...O.....OO.....#O...O......O..OO.O..OOO.O#.O.O#
+#O.O..#.O.O.O.O#.O#....OO.O....O.OO......O#OO...##
+##################################################
+
+>><^v><>^v<<vv<>vv><v><<^^>>>>^^><>^<^^vvv>>><><>v^^^^<<^<^><>>>v><><vv^v^<>>>^>><>v>v>^v>>v>>>v^<<^>v^<v<v<v^^>>v<^v>vv^><vvv<<^<><>^<>vv>^>^^^v<^^>v^>v>v<<^>>>^^vvv<>v>><^^<><<>v>>>^<v>vvv^^v>^^v<>^^<^^v^><>>><<<v^>v^>v^><v<^<<>^v^><v<^><^<>>>>v^<><^^>>>^^v^^<v^^>^v^v>>v<><<<vv^<<>^>^v>>v^v^<^<<><^>>^vv>>vvv^<v>v^<vv><^<<<vv>vv>^<^^>v>>^^^<^^^^<<^<<<<<<v>^v>^^v>>>^<>vvvv>>><<><>^v>>vvvvv^<<^<>^>v>>^>>>v<v><>^v^v><<^v<vv<v^<v^v>><^v<^>>^>>v<^v>>v>>v^v^v<<>v>><<><^<v<^<<v<<v>>^vv^vv<>v<v^<^^>^^^vv^<<>^>^^vv>^^<>>v^<v>>>><v<vv<v<^><^v<^vvvv><v>><<><>v<^<^vv<<<>><^<>^<^<>^<vv^>>><v<^^>vv<>v^>^<<^<^>^<^vvv>>v^>>>^<^>vv^<<^^<<>>>v><>v>^>^v>><><^<<>v^>>^<<>^v^<^<><^^^v<>^<v^v^v^<<^^<<<^>v>v<>^^^^^>>v>^v^v>><>^<<>^<v>>v^><v><<<>v^<<^^><>v<<v><vv^^<>v<<v<>>>v>v<<^v<vv><v<v>>^<<>vvv<<^>vv<<vvv>v>^>>^^^^^^^vv^v>>>vvvvv>^>^v<>v>><^v^^v^^v><>vv>><v<^<^>^v>^^^<<^><v>v^<^v<>><<^v^<^><v^v^^><<^v><><^^v<v><v>^><<^<<<^v<^>><>^^vv<^<<^^^^^v<vv^<v<^<<>>>^><^^>^v^v>v^<v^v^v^^>^v>^^><>v^v>vv>^>v^><v<>v<v<
+>>v<v^<vv<v<><<>><^<^<^>><^<>>^>^^<^v^^^<v<^^vv^^^>>^>v>>v<<v^<>vv^<<>^v><v^v>v<>v<<^^^^<^v^<><vv^^v>v<<>>^>>^<^>><<v^^^>vvv>><>>^<^>v><v<<^<<v<<>v<^vv^v<>^>^v^><<<><^v>><v><<^v<<^<^<>>>>v><v>>v<>>><v>v>v<vv<>^>v<^>^^>v^^vvv>v>v<vv>>v<<vv^^v>><>><<<v^vv<<v^^v<<><v>^^>^^vv>v><>v<>>>>vvvvv<>v><<<<>vv>vv><^v^<^<v^<><<^^vv><^<vv^v>>^<>v>><>vv^>v<vv^<^><^v>^>v>^v<v<>^v^<>v><v<>>vv>>vv<^>^<>v><<vv^<><^<>vv><<<<v<<^v>>>^<>>^v^><>v^>^<<^>v^^^vv>>^vv^<<v><>vv^^v><vv><v<vv^<^>>v<><^<^v><^<<<^^<>>vv>>^^<^<<v>><>^^^<vv^<v<vvv><^^>^<<<^>v>^^v<<<vvv<^v<<vv>vvv<^<<v>v^><^^><>^<vv<>^<v<>v><<<v>>v^v<>>^><v><<^v>><v<^<vv^<^>>>>v>^>^<><v^v^v<v^<vvv<<<^<vv^>>v^^<^><^v><^^>v>v^>^>v>>^>>>>^<<v><v<<vv<<<^^<><v<^^<>v>>^^>v><><><<><v><v<>v>>^>^<v<^>^^<^><^^^v>v>>^^<<>>>vvv^v>v^v^<>^^<^><^vv^>^^^>>^><^><>>^<^^<<>>>v<<><v><>vv>^>v>^<^>^^>v<>>vv>^<^^^><vvvv^^vvv<v<<^<v^<<v<^>v><^<>v<<^>v><>>>><>>><^><^><^<<v^^^>^<v><v<>v>v<<^<>^vvv<>v>>>>^v>v^>v<^>^vv<<^<v<>v>vv^^<<vv<^^>v^<><<<v>v>vv^^>v<^^v><<>v>^>>^^v>>^>vvv>^
+^^<v><<>^vvv<^v^>><^<^<>^<<v^v<vv>>vv^<^^<vv>><vv^v<<>^<^><^v>^>v^<v>>>>vv>vv<^>^<>^>>^><^>^<>^<>^^v>^vv<^^v>^>v>v>v<><<<>>^vv^<>vv^^^^^<<v>^^^^<<v<<v<v>v<<<^v^><<^>vvv>><v^^<<^>vv>^<<>>vv><<>^v>v^<vv>^vv<<^<v>>>>>>>>><>><^><^^^^><><<>^^^<<<v^^<<>^>v<^>^^<<><>^<<<>v^<>^v^<>v<^<<v^vv>v><^<^v<><<<>>>v><<<^<^>>^<^^><v<v^>vv^^><v>vvv^><^>^^>v><<v^>^v>^><vvv^<^<^^<^^>>>v^>^>v<v^<<^><<^<v<<>>^>^v<v>v^^vv><vv^>v<<v>^>v^v>>v>vv<<<<<^><^^<^<^^>><vv>^<<<vv^^v^vv^^^>v>vv^v^^>><v>^v<^v^>>>^>>^>>vv^v^<>^<>^><^>>^>^><<><^v^v<vv<<vv^<v^v^><<>v<^><>v>^v^<^>v><^><v<>>^v^vv>>^v<vvvv>><><>^v^vvv^<v^v<v<>^<v^<<v>v<<<>^<<>>v>v>><<^>><^<<<<<<<<^^>^>^^>><<>>^<v>v^^>v>>>><^^v^<>vv>^^vv<^<>v^v<<^^vv>>v^>>v><v^^^^<^v<<vv>vv<>^>v<v>v<><<<v<^v<^v^^^<<^vvv^>>vvv^>>^><v^^><>v<vv><>v>v^<<v><v<^><<v<^<v>vv<<><<v><<^^v>^><<<v<<v>^v>vv^><<<^>>v><><<<vv^>>^^<<^>^v^<>^v>v^>v><>v>>^v>^<^^>>>vv>>v^<>vv^^v>>v<^<>>^<^^>^>vvvv<>vv>>v<><v>>v<>v><^^^<<v<>v>v>>^v<<^<>><>^^<^<v<^^>><^^v<<<^>^>v^<>^><><<^^>>>>^<v<v^>>>>>><<<>^v<v>
+>^>v^^<^<^<<^<vvv^>v^<v^^v>^<v><><^<^>><^v<^^^vv<v>v><^>^><<^^<^^v^>>><<v>vv>><><<<^^>>^^>>^^v<^>v^>><>v^v^>^^<^v><v^>^^<>>>v<<v^v<^>v^<vv^><>><^>v>v<^>>^>>>v^>v<^>^<v>>^<<^<v<vv>^<v<<v>^<v^<^<^v<><v>^vvvv<>>^^^<<<vv<>>v>v><vvv>vv^<^^^^^>v<^^<^>>v^^<>>v^vv^^v^><v^^^^>^^vvv^<^^<>vv^v<>><^^>v^>^v>>>^^>>>^<^v<v>^>vvv^^<><>><^vv>>^><<<<<^>>>^<vv><<v>>>v><><>>><vv>v^<^>>><^v>vv<<^<>v<><>vv><^^<^v^<<^v>^>v^vv<>^v^>v<v<>^<vv^v<^>^<<^<>><^^^<><^vv^v^^v^<vv>>^^>^<<^>>>><>^^<^^<v<<<<v>>>^<>^^>v^^^<v^>>^^v>><v>v^vv<v>^<^<<><v^<^<^^vv^v>><v<<^v<<^^^<<^v<v^>vv^^v>^>^v><^>><<^<v^<vv>v^^v><<^v><^v><>^^>^v><>vv^v><<v^<>^^>v^><><><^v>v^v>vv>^v><><<v<><>^<>vv<^<>^<<v^>vv>^v^^^v<vv^v<<<^<><<<<<v>>^v<v<<<v^v<vv<>^v>^<^<vvv>^>v><v<>v><>vvvv>^^v^^<>>>v>>>^^>vv^v<<^>v^<v><vv<^<>v<<^<<<vv^^>^vv>^<><<>^>>v^v>^<^v^<v<^<<>^<>^^<>^<^><vv<>^<<v<<><^>v><^<><vv<<v^<^>^<>>vvvv>^vv^vvv^^v><<^v<><<<^vv>><<^>^<^>v>v<>>^<^>^^v<^v<<^v>>>><>vv<^<v<^^v<>^<<>v^v><<v<v<>>^>^^<<v>^^<vv>vv<>>^>v>v>>^^v>^^>><v><^><v>>v<><^v<^v<^
+<>v<v<^<>v^>><^<^<v<>>v^>v<vvvv<>^^><^>^>>^^>^v<^<v^<v><>v^<vv<^<v<^><v<v^>v^<<>>^^>^v<>^v<vv^<<v<>><vv^<^^vvv<><^vvv^><^<<v^^<<v^^><v><^v>^<^v^>v<>>^vv><<^v<<v<<vv<vv^>>>vv>vv^><v<<<^vv><>^v>^><<^v<<>>><^>><>vv^<vv<><><^<>^<v>v>^>>>>vv>vvv>v<>vvv^v^v<^<^v>><<>><><>vvvv<>vv<vv>>v^>><>^v<vv^v^>><^vvv^^<v^><v<^vvv<><><^^^v^<<v<>v^>^v<<>^>>^v^>^>^v>^<^^<>^<^^><>>v>^^><v^<v>^>v<v<<<<<<^v><vv<<^vvv>^>><>^><><v^v^^<vvv<^^<v^^>v<v<>v>^>><<^vv><<>><<v<><v<>^v^^<>v^v<v>v^>vv^<<>^>vvv^v<v^^><>v<<>><<v^<><^^vv<<<^><<><^>vv>v<<<^><vv^>>v<<><>>v^v^v<><<>^v>>v<v<vvvv<^^>><^><<>v^^><<v^v<>v<<v<^<^^<>v^>>^v^<<<>>^v^>^<^<v<v><^<>^v^<<><>v>^^^<<^<v^v^>vvv<v><^v^^>v^>>v^<<><<^^^<^><v<v^v^>><^^>>^<vv^>>>>^>><^v^v<^<v^v<><vv>v^v><>^<v^><v^v><>>^^>v<<<<>v<>v>v^v<><<>^>><><<^><<><^vvv<><<^^<v<v>^v^^>>v<vv<^<<^><<<<>><^v^>v>^v^<^<<v><vv>^^v<<><^^><<^v<>v<<<v^vv^^^>>v<><><>><>vvvvv<>>>vvv<<<^v>^^^>v>>v>vv<vv^vvv^<>>^<<v<>>>>^<<<^v<<^^^<vv<<v>>^v^<>^<><>v>v<^<<<v>^><v<^>^v^v^<vv><>v^>^<^^<vvv><<^>v<^^<^vv^^<v^v
+^<>v>><<v^>^v^<>^^^>^>>vvv<>v<v>^<^vv<v^><vv^><>^v<<vv<>v><^^v^^v^^^^<^^v<<^^vv<<<<>vv<v^^v<^v<^>>v<^^>><vvvv^<v^<v<<^<>^^^<<>>v><^><^<v>v>^^>v><>^^vvv>^<^^v<v^v<<<^<>^<v<<<<v><^>^^<>vv<><^><>v<>v><^vvv>>>^>>v^<vv><v<>>>><v<^<^^<>^v><>^^^>^>v><^<v^<^v<>v>>v>v^<>^v<><>>><v>^<<<<vv>>><v>>v>^^v>><><^<<>><<<^<<^v^v^>^^><^<<<<>^><<<^v<<>v<<v>>^vv<^v><<<v><^^^><v^^<^vv>>vv<v^<<>^<^>vv<><>^v><>v^>v><^^<^v^v<^>vv>v><^>^>vv<v>^<^><^^^<>^>>vv<<vv^<v>>vv>vv<v<v<^<<<<<^<^^<<><^^<vvvv^<v^>><<<v>v<>><>><^vv<v<<v>^^<^^><^^<><^>><^>>^vv<^^v^<^v^v^<v>v>^><><<^>v^<>^>><^vvvv^><<<v<v<>>^vvv^vvv<><><>v><>v<vv>v>>>^<><^v>>^>v<><<v<>><>>>v^v>v><vv>^<v<^^^><v<<v<v>>><^<^^v^^><v><>><>><^<>>^<v^<<<v^>v^^v>>>^v>v^vvvvv>^<^^>><v^v^>><vvvv^^>vvv<^v^<^>v<^v^<>><>v^>>v<^<v<v>^>v><v>>><^v>^><v<v<vv^^<<>><<<v>^v^^v>v<><>v><<v>vv<^^v>>^>>^v^<^><^><v>^vv^v<^^v>v>v><^^^<><vv<<^v^<v<v>v>vv^>v^>>^vv^vv^^>v>>><<>^<vv>^>^>>^>^<>vvv^>^^<^^><>^vv><>v>><vv<^vv<^<<v>v^>^<>^^<^^>>v^<>>>>v^>v^^><>><v><^v^>>vv>>v>^^v^>^<^>>v<>v^>v
+>^<<<^>><v<<^^><<v^v>^<>^^<>>^v<<<^vv<>><<^<><>^<^v<v^^<>v^<v<<vv^<><<v>^<<>>><vvv^>^>v><^v>^<v<v^<<<>>><^><v<<<>^^<<v>^<<v<vv><v^vv>>^<<v><>>v<vv^^<^^<><v^>^v^<<<v>v^^vv<v^>>^^^v><<^><v^^>vv^^>v<^>v>v><><vv<<><>^<<>>v^^<>vvv>v<<<^^<>^^<vv>^^>><>v>v>^vv>v><>^^><<^v^^vvv<v^^^v<^^<<<v^<v>vv^<^^v<><^>vv>>vv>^<>>^v^>v<^v<<v^>^vvv<v^>>>v^^>>^^v<v^^<>v<v<>^<<^>>v<<<>>v^<<<<v><<v^^<v^>>^^<^>^<<><^^>v<vv>v>v<^<v>><>v<^<v>>>v<vv<<<>^<>^^v^><^<>vv^^>>>^>v^<<>v><<v<<^>^>^<>vvv<vv>><<><>^vv<v><^<<vv>>v>>^<<v^>^^<v>>^>^>v^>><>>v<v<^<<<<><v<>^v^^<^v^^v>v>^v<><>>>^^><<<>v^^^<^v<v><^^v<>v<v><v>^^<<>^^v<>>^vvv>><<<<^vv^v>^v<>^>vv^^vvv>vv^><^<<>>v>^vv^v^>><<v^^>^<>>>vvv>^vv^^<>^vv^>^<><^<v^<<><v<>>>>v><>v>^vv>>vv<^^<^^>^>v><^><v^^<>vv>>><>>^^>>^v^v<^<>^vv^>v<><<^^v<><<v^^<<v><>v^v<>^<>v^^<<^^^^^><>v^v><^^v^<^><vvv<^>^<<^^v><^^>v><v>>^<vvvv><^<v>><<<>v>>>>^<>^<^v><>^<v<v<<>^<<^<^v^>v<<>^>^<v<^v^<>^v<>vv>v^<vv<^v>vv>v<<<>^v<>^><v><<<>^^<^^<v^><><<><^^>vv^^<^<^v>v>vv^>^>><^<v<><^><<>>>>^vv>^<v<><<<v<v>>v^^
+vv<v>>>^<<vvv^>>v^^v<v^<><^^v<v>^v^<>><>>vv^>>v<<>v^^<<<>vv>^v^>v<>>^>v<^v><<>>^<>^^<<v>^^>>^v><>^^<>vv>><v>vv<><^^v^^<v^>>>^v^^<v><<<>^^vv><>v<><>>^^<v^v^<vv<><vvv><<vv^>^<><><<v^^><^v>v<^^^>>^v^>^><vv<<<>v>^v><v>^>v<v>^vvv<>v>><vv^v><<vv<^^>>v<>^<>v^v^^>^^<vv^><^<^v>v<vvv^><v^<^<v<><>v^^v>v>vvvv^vv^^^>v>vv<>>^<v>^vv^>v^<<v^v><>>v^>vv>vv^>^v^>>^<><^><v>v^^<v<>^><<>v<^>^^<v><>>><vv><^><v<^><<>^<vv^vv>^>^<^^<<^>v^v>^<^<v<v<^<vv^>>vv^^<<^^vv>>><^>vv^><^<><v^<^^v<><^<v<^v^^^v>>vvv>>^^^^><^>>>vv<>>v>>^^>^^>^v^vv^>>^>>v^v^^^v>>><>^<>>><^<v<<<><<>>^^vv<vvvvv^vv><^v^<^<<v^^<>><<>^<^<<<^^>v>v<<<<^v^v<>v^<<>>v<vvv>^vv><>^^^<>v<vv><v<<><vv<^v<>>^v<<<>v^^^^^>v^^<><<<vv^<>v<^v>v<vvv^<^^>^<<<vv<>^>^<v^<><^><^<^<^v><v^^v>^v^><^^<<^><^^>^>>^v>^<>v>>vv>v<<<^^v<^v<v>^>><v><<^^<<^v><<v<^^^^v>>^v>>>v>^^^^v>^<<<><<v<>v^>v^^>^v>v<vvv>^<>v^^v>^>^v><v<^<><^<^^v>>^<<vv<vv>>v^<vv<v><<^>>><<^>^>v<<^><^v^v^>^>^vv^vv>>vv<<<<v><^v><^>>^>>>v>>^>^>><<>><>v^><^^v<<^^v<>^><^v<<<vv><^^^<>^^v^<>>v^<>^^^^<v>>v><<<><>^v>v
+v<v>v<>^>v^<^^<>^^>vvv<>><>>v><><<<>><^^>^<<<v^<vvvvvv<^v>v^>^>^>vv>>^v^v^<><><^><vv<>><<v>^v^vv><<>><vv><>v^<^<>v^<<v>^vv><<v>>vv><^>^>vv^vv<<^v<<v<><vvv<^>vvv><>>v^<^^^v^^<^>^^^>vv>^^<<v<^^>vv^v^<>^<<vvv>v<<>v^vv<v>>v<v<vvv<>>^>>v>vv>^v^^<<v>^vv<>v^>>><^<<>^^v^vv^v><vvv<<>>^^v<^<^<>vv><^>>^<<>v<^v<>^<>v^^vv<>><><^^<^v^<v>>^^<<^^v><^^v^^vvv>v<><^>><^<^<>v>>vv^>>^vv<>>vvv^><v<><>^v<><<>><>^^<<>>v<<^<><<^^v<<^^>><<^<vv<<<v^^<^<>>vv^^>><>>v><^<v^^v<>^>>^v<v^><v><^><<^<v<<vvv<<^>^^><>^<<><<><<^>>vv>>^vv<>^^>>v<>><vvv<<^^v^^<>>vv<><<vv><^^v^><v>^<>^^><^v^>v^v><v<^v^<>^<<>>vv<v<^^vv<v^v^vv<><vvv><vvv^^<vv><<<^v><^vvv<>>^v<>^^<^^<vvv^<v^<<^^>v^<^>v<>>^vv<<>^><>>v^^v>v^<v^^^<>^v^v>>><>^>v<>^^<><^><<<<v<<<vv^>>>v^vv^><>>>v<<<>v<<<v^^>v<^>^v^v<^vv<<<^>v>v^>^^><^>v>v><v><^^v>^vv>>vv^>^<^v>><>vv<vv^<^<v>^v^v>^<>>v^<^^^><v^v^><<<^^>>>^^>><v>^>^^><^^v>v<>vvv><^vv^^^^v^^<^><>>^>>^>^<v^><>^^<v>><vv><vv^>>>^<<v^v<<>>vv^>^>v>v^><v^^^^^^<^>vv<>>^>^>>^>><v>v><><vvvvv<^v^>v^>>v<v<v<^<vv^>>>>^<>^<<v<><^^><
+><<>^>>^<^^v^^><<v>v>v^>v>>^^<><^^<^vvv<><<^^<^^><vv<^^v<>^^v^^>^vv><v^^^<>^<<<v><>^<<>vvv^v<v>^^<><>>><<>><^<>>^>^<^v>v>>v^>^^v^^^>^vv><v<<v>vv^v<>v^^^v<v<v>><^<>><>>vv<^>v^>^v<>^^^vv<<>v<<v>^^v><>^<<^>^>>^<<>^^^<<^vv^<<<^^^^<v^^^>>^>v<^<<^^>>^vv^><vv<^^^^<v><v<^v<<vv>v>v>^>>^^^v<<vv><^vv^^>>>^>^^^^<>>>>><^>>^^<><v>^<<v^>v^^vv<v^>^><>>><>>^v<^><>v^>^>>^>^^^>vv>v>^^^^vv<>>>v<<^^>>>v^v<^<^v<v><<>>^^^<>^v>>^<><v<>^><^>>^>>v><><vv^^vvv^<<^^v<vv^<<>>>v>><^<<<><v^>v>><>^>>>v^vv<>vvvv>v>>vvv>>vv^><>^^>v^>v<v<v>>^>v^vvv^^>>v^>><vv><v^<v<>>^>v<v<v>>^<><v<<v<<^<v<><<<>^^>v^v>>vv>^^<vv^v^<>>^<>>^v<^<<><<^><v><>^^vv>^<^^v>>^><^<^^><^v<v>>>^vv>><v>^v>^<v^>><v>^><^vv><v>^^>>v^>^^<^v^<<<v<^<<^v>^<<v>vv<v<<>vv^vv>^>><>v^><<vv>><><v^<^vv^<<>v<<>vv^^^<^vv>v^v><>^>>^v>><^<^^v>v^>vv^^>>^<><><^v<><<^><<><><vvv<<v<<vv^<<<<^<^v<v<v<<v<^>>^v>v<<<v^vvvvv<<^><vvv^<<>><v<><<^<>><^<^<>>^<v>v>><<^><>v>^>^v><>>^>>><<v>v<vvv>>>>>><<<v><>v>>v^^vv<^^<<<>vv^>vv<^^>^<><vv<^^<><v<^>v<v<^>^^<><^^>v^^>^>>v>vvv<<<v^>>>^<^v
+v<>^^^>^<^>^<<<<v^>^vv^>><>v<<>>^<v<^v>v^^^>><>>v^^<<><^^^^>>^<^^<v<>v^v>v<<v>^>>v>^>^v<>^>v<<>>^<>^^<^<>>>^v>^<vv>>^><^^>><<^^><>^><<>^>^<v<><^^<vv>>v^v>v>v><^>>>>v<>^<vvv^^>^v<^^v>><<v<<>>>v<<v^>>^<>v<v>v<^>>^>><>>v>^v<>^^<^><>><>v<v><vv<>>^>vv^>^^<v>>v>>v>>^v<v<^^><<<<<^vv><<v>vv^>>v><>><vv^<^v^v^v>><v<^^>vv<>>^^<^<v<^vv^^<<<^<v<^>v^v<vv>v<<><>^v<^<<<vv^<>vv^v<>v>v<>^^^>^^>>v>vvvv><vv^v^v^v><<>v>v>>^<vv<<<v><^>><^v<^v><v>^>v<<<<vv^<^v><<>v^<<<^^^^<>vv>vvv^>^v>v>v><><<<^^vv^^^><v><v>><v^v^^<>v^^>vv>v<>>v><^v>><<><>v<^<>^^vv^^><>v^^^<vv>^>^^^<<>^<v><<<>^<^<<v^vv<<<vv^>>v<>>vvvvv<v>v><^vv>>v>><<><><^^>^>^>^<v><<<vvvvv>^<v<v^v>^^v><<<^v<>>^>>^v>^^v^^^^v>^>>v>vvvv<vv<^v<vv><^>v>^>^<>vv^^>><^^>>v^v<^>vv^<vv^>v^>v>>>>v>v^v^>>v><>v^v^<^>v<^^^^^v<<^>v>>^<v<v<>v>v^v>v^>vvv>vvv^vv^^v>^>v^v<v>^^>v<^vvv><>^v>^vvv>v<><vv<^><^^>v^^>><^<v^>^<^>vv>><<^^<>^<>>^><^^v^<<>>^^v<v^>>v^>v>^v^>v>>>>^>>>^>^><>^v^v^>vv^^<^^^>>^vv^^^>v^>>^<<v^^^v^vv><<^^<<v<v>^>^v^^^>><<v^<>><v>><>^<><<v<v<<>><<^>vv>vv<v<v<<<^
+v>vv<<v<^v<v<^v>^v<>>>^>>><^^^><v^<><<<>^v>>^><<v>>^v>>^<>>v^>^^vv<<^^><<>v<vv^v^^^>^<>>^<<<<^^^><^<><^vv><>>v<^^>v>^v^^v><v>^v^>>^<^>vvv>^v<>v<>v>^^^><>^vv^<^<^>v<v<v<v<>^v^<vv<<v<^vv<v<v^^<vvv<<^^v<><>>><^v<v^v<^<<vv>^<>^^^<^><<v>>>v^v<^>v<^>^<vvv<^^^vv<^v<<<<v><<^<vv<v<>>^^^^<<<><v<<><><^>v>><v<>><^<v<^^>^>v^><v^<^<^<<>v^vvv<<^^^><^><^>>><<<<^<^^v<^<^v^<^><<^>>v<^>v<>><^v><v<<v><<<>>vv^<>^^^><^<vv^<^<^<v<<^><>^^><v^vv><^<^>v>>>^<><v<v>><>v<>vv<^^<^<^^<><v^<>v<><<vvv^vv>v^vvvvv<>v>>v><^^<<v>><<>v^>^v^><^<>>vv<>^^<<^<<v<<<v<^^^^><<>v^^<^>^v><><^>>v<>^vv^v>^v>>vv<^<^>vv<^<^<^^^<>v^vv><^^>v><<<<>>v^vv<^<v><>v><v<<<vvv<^<<v^><<<><><^vv<>v<vv<<<<^^v^v<<v><^v^<><<>^<^^vvvv<<>^^vv<>>><v<^<v^^vv^v^<v<><v>><>^v^^^>v>>^>v^>^<<>v>>^v^^<<^^v><>^v^>vv>>v<v<^vv>>^<^v<>>vvvv>>>^^<v<><vvv^<><>^><>>v>><<^<>^>^>v>>>^^<^><^v>><^><><<v<^v<v>>^v^^>v^v>>^v^v<<<^^^<^<^<<^v>^<><vv^vv><>>>v>^<<><>v<v>v>>>^>v<><>vvv^v>^v^vvvv>^<v^^^^>v><v<v>>^<^>v>^>>><<v>>vv<>^^<<>^v^v<<>vv<>^v>v<>^^<<>><<^vv^>><v<v><vv<<>v^
+^^><v^^^<v>vv><v>^<<v<^>>vvv<^<vv<>^v>v>v>v<v^vvv<>>v>^v><vv>>^^><>v>v><<v<<vv><v^^><vv>><^>><^v>v^vv^^<<><^>v<vv<^><v>v^>>^><<v^<^v<<>v>^><<<^<<>^vv<>>v<<<<><>v>^^<v>><^><<vv>>>v^>v<^vv>v>^^<^>>v>^^<v<<<<>><v<^<v>>v^vvv^v>v^<^v<v<^^^<^v>>><<>>>v<<<><>^<>^>^>vvv^^^>>v<^<v<v^^<^<^><^^^<^>v^>^<^v><><^vv^^><><^>^<<^>>v^>^v^<<^>v^>^<^>v>vvv<<v^<><<>v>>>>^>>v^><^vv><v^v><<vvv^^>>><<>vvv<^<<><vv>>>^<^v^^>^>v^<^><><<vv^vv<vv^>v^vvv^^^<>^v>^>><^<<>>>>>>v<^>vvv>v^^^<<^>v<^><>>v>vvv<^^><^<^vv>^v<><v<v><>><vv>^<vv>>>^>^<^><^>vv<v>><v^v><><^><<<<v^<vv>>>^>^v><>>v^v>^v<^^^><vv^<><><^^>^^>v>^^^<^v><<<>>v<>>^>^^v>^^><>v<^^<<v><>>v<v<><v><v^^><^^>>><<^>>^^vv><<>><>^<<vvv^>vv<<v<v^<^<vv^<><>>v^<vv<^^<v^^v>^v^v^^<><<<>v<>>^>>^<^<<<<vvv>v<vv^v^>^>>^<^<<>vvv<><v><>vvv>>>>^^>^v<v>v>><v^<^^v<v>^^v>>v<>^^^><^^^><>>^<v^<v^>^^<<>>>v<^v^>^^<vvv<^^^<v^<>^vvv><^<><>>>^v<><><v>^>>vv>^^vv^^<^<>vv<^<^<vv><<>^>><<>><vv^>>^v><^v^^v^<^>v<<><v<^<>>^v^^<^^>^>><>>^><>^><v<>v^>>^^^^^^<^>^^><vv^>vv>>>>>^>v>^><v>^>>^v>>^><<>
+>v><>^v^^>><<<<^^><>^><v^vv^v>v<<<>vv^^^v^^<<<>v<<^^<>v<><^v<<^^v<>^v>^v<^v^<vvv^><<v><<>>^<vvvvv<^>v^<><<<>>v><>v><vv>^v<v<<>^<v<v^<^>^vv^^><><v>v>v^>v>><v^^^<<vv><v^<^<^^^<><^>^<><>vvv>v^^<>vvv^^v>v><^>^>^<<<v>^v<^><^<v>vvv<vv<^><^>^>v>>^>^^vvv<>v<<<^>vv^>v>v^v<v>>v><<>vvvv>^>^v<^v<>>v<vvv>v><>v^>>^<^^>v<^^>>>><vvv<^><><v><^v>>^>^^>^^^>^>><^<vv<>^<><vv>^^>v^<<^<^<v<v^v<v<<v^v^^v<<v^^<<v^><vv>^<>vvv><>>v^^>^<^v<^^<vv^<^^<>^^v>>>^>^^v<<<<>>vv>vvv<^>vvvv<^<vv^vv^v^^<>^^>^>v<>>>^<><^>><^>v<<<^><>>^<v<v>>v><<<<^>v^^<v>>^^vv<^<<v^vv<^<><v<>>>v<v<>>^>>^<^<<^v>^>>><^^vv<<vvv<><v<<v<v>>^>v^><^>^vv^<>><<^>^>><v>^>^>v><<>^<<v>v>>^>v^>^^v<>v>^v>v<>>^^>>>>>^><>>^>><<v^<^^>vv<>v>^>>^<v<v<<<<^<^>^<vvv<><<vv^vv<v>>>>^>v<v<v^^>>^>>>>vv><<^v<^<<>^<^>vv>^v<v^^vv>>^^^>>><<<>v^^^<^<^><v><^<^>v<><>><><^v^^>>^<<v><^^><v>>>^<><^><<^v^<>>^v>^^<>^^^^^^v<^<^v<<<<<>>>>vv><v^^v^<^<<<>>^<^v<^>>^>><v^<<>^v<^^v>v^v><v^vv^^<<<^v><^<^v><<<>v>v<>^>^>v>v>^vv<<>^v<<vv><^<vv<>>>^<<<v^^v<^v^><<<<^v^v<v<><><>^^v^<><^v^^<><
+^>v^<^><<<vv<vv>v<>>v<<vv>v>v<<<<<<^vv^<<<v^^v<v>>v^vv<vv^<<v<^v>v<^vv^<>^>^v><^>>^vv<<<^^^v>^<^><>vv<<v^>v<v^<<^><^<^>>^<^v<>^^<^v<^><v>><^v>^^<vv<v>v<>>><v>v^<>>v<<<^>^>v<<>>>^<v<>>><><^v<>vvvv^<v^<>v><v^>^^>^^^>^v^v<>^v>^^v<^>vvv<>><^^^<^^<>v>^>>v^<>^^vv<^vv<>v<><^<>^^><<<^^>v>v^^>>v>vv^>vvv>v<<^<v>><<<<>v<vv<><>^<v^>^>v^><>^>vv<><<^^><v^v>vv<v<^<v<<^>^<<<><^>^<>>^<^vv<>v>^<v<<<>vv<^>v<><^v><<<vv><<<v><^v<v<<vv<^v^<v^^<>v><^<vv^>><><^<v<v^<<>>^v>v>^v^<v<<v><v<>><><>>>^>^>>>v><>>^^<<<<<v^vvv<^v^<>^vv<>>v^>^<<vv^>>^^^<>v^v^vv><^vv>><^<>^>v>^<vv><v^^^v^<^^^<<^>^<>>>>^<^v<v<><>>^^<v<>^^v^v<>^>v<^^><^<<v><^>v>^vv<^vv<>>>>><v<^^vv<v<^>vv<^v^v^^v<v<<vv>^><<<<^>vv^><v<<v^>>^>v<v><^<^>^^>v><<^<>v<<v>v<><v^<<^>v>^<><v^<<v<v^v>^>vv^^<<^^v><>>vvv<>>^vv>><<^^<vv<>>>^<^^^><>^vv<v<^^v^^^^^<<v^<<v<>v>^^^v<^<^>v><v^v^v>><<>v><vv>>^vvvv<^^<<<v><<<vvv^>><v>v<^^^><vvv^^<<^vv>v^v^>v^^<>^v<v^>v^v><<<^v>^v>^<v^<v<v<^>^<^v>>v^><v^^^<>^>v>v>^^vvv>v^^>>^v<>>^v^<v>^^>^^<^><><v<><>^v<v<><^<v>>^>>><v><^v<>vvv^>
+<>><>>v>vv^<^^<^vvv^v><^><<>vvvv^><<<>v<<<>^><^v><vv><^<v<v><v<^v<vv^^<<^v>>v^>^>vv><vv^vv^<v^vv^^>^<<>v>>>>^^vv<v^^v<>>v>^vv^>^v>v><vv<^v<v<<^v>>v>><v<<v>^^^><>v>>^v>>v^><^vv^^vv<v<<^^v<>^<>v<>><^^v^>v^v>v>vv<<<v^^^^<^^v>vvvvvv^v^^^><<>vv>^v^><>^^v>>><^>v>>><vv<><v^>>v^vv>^<vvvv^vv>v<v>^><<>^v<>vv>vvv^v^vv^v^^<<vv<<^v>>^<>v^v<>>^<v>><^>^<>^^v^v^v>>vv><vv<>v>v>v^>>>>>^><<>^v<>^<^^^v><>v>^^^<>v^>^vv>>>>>><>v>><>>>v>><<^>v^^>v<vv<^^^>v><><<>v^>vv^^^v<<^>v^<>v<>>v>^^^v<v<v^<^>>v<^vvv<v^<>^v<<><v<v<<^v<vv^^vvvv^>v><<vv^<<^<<>v>^^^<^^^><>>^vv>^<<<vv^<v<v<<><^^><v^<<^v^^>^<^v<^^vv><^^>^<^><>^<v<<^^>v>><<^>vv<^>^><<v<<v^<<^v<^^^vv>>^>^>v><>^>>^<vv>>v>^^>vv<<<>>><>^>^><<>v^<<<<>^^v^<>>>^><^>>>^><v>v<>>^v<^>>><^^<v^vv^>^><<<>><><^v>^<>v<v>^<<^<^>^<>>>^v>><<^vv<^vv^v<>>v>v>><vv>v^^vv^<^^vv><^v<>^v>>vvv>v<<^<>^v^<vv^v<<>v^>vv<>^vv<^<^>><<>vvv^<>v<^<v>v>^^v^<v<<v^v^^^>vvvv><v<<v^vv<>vv^v^<^<<^v>v<^<<><<vv<>>v<^<^<<^>v<<^<<<>v><><^^>v<v<>v^>v>v><><<<^^<^>vv<v>><<>vv<<<>^v>>vvv^^v<^<v<v^v^^>><v<>^<^
+<v<<v><vv<>^^v^v>^>vv^><^<>v><^vv^<^>>v<v>vvv<>>^vvv<>>v<>^v>><>vv>^v<v>vv^v^^<^v><<<vv<vv<v^<><v^><^>>v>vv^<^v^<^vvv><>><^^v<^<^<>>^>^<v>^<<v><<>v^vv>^v>><v^v^v<vv^^v^^vv<v<<v^v>^>^^v<<^^^>v<><><^>^>>v>>v<>^>>v><><v^<<v<>vv>v>>>^>^<>v^>vvv<^<vv><<>vv<<><v<<<><>^vvv<><<v>^^^v^^v>><<v<v>v>>v^v<vv<<<>>>^v<v>v>v>^v^<<<^>>^>^^^<<^>>^><v<^v^>v<><>^^<v>^^<>^vvvv^^v^<<<^><^><<^>v><^v^>v<<^><<vv<v><vv<<><<^^v<v>^^^><<v<>v>>^><v^<v>^vv<<<<^vv<v>v>>>^><><<<<v>v<^^v><>^v<^<>^<<v<^v^>vvv<<v>^^><><v<><^v<>>><<^>v><><v<>>><><^v<^<<><v^^v>vv>v>^^><^<^>v^>v>vv<>^<<^><v<<v><^^><v^>v<^v>^vvvv><^vv>^^^><^v><><vvv<<v^^^^vv>>v^>>v^v<>v>>><>v><>^<^<<<>>>>vv>>v<^>>><^<^>^^>><>^^<<<>v><v^^>v^<^v<<>vv>v^<v<^v><vv^<<>>^^<^><^<vvv>>vv^>>^<v>v><<><<>^v<><^^vv<^vv<<v>>><>>v>^<<^v<^v<^^>^><^>^^>><<<>^>>>>v>v>>>^v>^^v<^v>^<>^>>^<><^>vvv>>vv<<>^v^>^^>^<^^><^v<>>^v<><<>v>v^>^vv<vv<<v<^^><<v<v>^<<v>v<<v>><^v><v>^<^<<^<^v<^v>>v^^^v>v<v>>>^<^<v<^>v^v^v>><<^>^v>>v^<>v>^>^^<^v>>^v<^<^^><><<<<^vv<<^^>^><>>^>>>v>^^>^<v^^<>><
+v<vv^>^<^^<><^^>>v>>v^^^<>v>v^<^<<v^^>>^>^>>^<v><^^^^>^<v>^v><vvv<^vv>v>>^><<^>>^vv<^^^^>^^v^<<v<><<vv<^<vv><v^v^v>v<^><<v^<<>^>><v<^v<<vvv><>>^vv^^<<^v<<>v><>^<<v>>v^v>^<<v><<v<^^>v>><vv<<^>><v<^>vv^vv<^<<v^vv<<^^>^^v><<^v>>>vv<^<^<v^^>^^v^>v><<>v^<>v><<v>v<v^vv^<^^>v<v^v>><^<<>>>v><^<v<><>^^<^<><^<<v>vvv<v^^vv^<^^><<v<vv^<<><<>>>^^^^>>v<^>>^v<v<^>v>vv<^>vvv><<v^>^^v<>^<>vvv^><v^<<<v<<><vv^<>>v<v^vv<><>v<<>v<^v^^<<v>^vvv>v<<v<v><<><v<^>>v^<^>v^vv^v>v^v<v<>><<>>>v<^<<^>vvv^>v>>>^vv><><<<v<>vvvv>^<>><^^v><><^v^v^^v<v<^vv^<>><^^>>>><^>^>^>v>>vvv<<>^><>^^v^^^v^^>v<<v>vv^><>><<v^<vv<><>v<v<^^vv<<><<vv^v<>v^><^v^^^^^<><<^<^^^>^^^vvv^<<^v>vv<<<v>v^<>v<<v^<<>^>v^vv^>^^>v<>vv^v><><>^<><>>><><^v^<>><<v<^v<<><v>vvvv<<^><v^><v>^v<><>v^<<^^vvv<<<>^>^>^^^>^v><^^<>^>^v<v^^v>^>>^v^v<<>vvvvv^<vv>^v<>v^<><^<^v<>^v>^^><^v>v<>v>vv>^>^v<^<<^>v^<v^<><v<vv>v>^^><vvvv>^<^>^vvv<<<^><^<v>^<^>>^^>^<<<>^>^vvv^v^<vv<^^v<v^^^>><v>^>><v>v<>><>><v<<<><^v^v^>>^^>>>v<<^^^>^v^^^><v><<<<<<^v><><vv<><^v>vvv>^v<v<v>v><>v<
+<<>>v<^><^vv^^^^v^v^v^^<v<^v<<>^<^v<^^<<<>v^>>^^^v<>v^v>>>v<<><<<>^^>>^<<v>>v^<v>v^^^>^>^><>>><>>^v>><<^^vv>^<^^^<>^>>^<v>v<v^<>>>vvv^>v<v<><>^^v^<vv<>^^v>v<><<<>v^v>v<^v>^<^v^vv^><^>v^>v^>v^^^<>v>v<<v>v>v^^>><>^><v<<><<vv^>^vvv^v>^^<<<>^>v<<v<v<v>^<v>v<<>v>v<><>^^<v>>^vv<<v<^>><>vv>v<>v^>^^><v<<><^><><v<<>>><v^>v<^<v^v>><<<v<<v^><vv^^<<^<<>^<>v^><v<^v^v^<>>>^^^vv^<v^>><>vv<<vv>^<^v<v^^^><^>^>^<^v>><^v^v^>>^^v^v>v>>v>>vv^^^^>><>vv><vvv^v><<vv^<>>^^v><<<><vv>v^>^>^<^>^v>^<v>vv><><^<<<<^<^<v>^vv<<>>^v^^v^>>><vv>><^><v>>^<v>v>>v<v<v>><v<><v^<<^v^<v^v<<v^^<<><<^^v>v>>^<^^v>>vv<<^vv^^v<^>^^v<^^<<vv>>vv><^<v^^^<<^vv<<<v<^><<^><^^vv>^^>^^^<<v<v^><<<^v>>vv<vv^^><<<><^vv^><v>^<^<>>vvv^v>><^<vv>^^^>^v<>>vv^^<v<>^<>>^^v>>>^^vvvvv^<^<<>>v<vv^^<^<v><<>^<<>^<v^^^^>>>>v<v<><^^>v^><<><vvv^v<<vv<^v^v><><>^v^^v>>^<<v<v^^v^>>v<^<^^^v<<^>^^<<<<<^<>^><^<^v>^^^<>v^<>>^^>v^<^>^>^>^<<^><>v^v>>^<><^^>^>v<<v<><vv>>>v>>>^>>v<><<^<^v^<v^<v^<v^v>>>>v^<>^v<vv^^<>vv<<vv><<>>>^>^v^v><>>><vvv^<>^vv<<^^<>^v>><<v><<^<<^
+vv<v>vv><><>>^^^>v><<>>><>^<^^^><v<vv^<<<><>><v^v^><>^<v^v^^v<<<v<v^<>>v><<<>>^<<^<v^<<<^>v<v^><<v^v<<^<<v><<^^^><v^>>>>^>>>>^><>v>><v<^^^>v>v>>v>><vv^vvvv>^^<>v><v^>v^^^^<<>vv<v><^>>>>^v>vv^>vvv^v<v>>>v<^^^>v>vvvv<<<vvv>^>^>><>v^<^^vv>^<v<^v><<><v^><<>v><<<><^v^^>><>>^^<v><><>^<<>>>^<>^<v>>^>><>^<<><vv^>^<v^v<><vv<^<<^v>^>><<>><^><<<>>v<>v^^>vvv<<^<>vv^>v<vv<>^><>^>^^v>^><><<v^<>v^v>v>^><><><^<v<^v>^^^>^v<^>^vv^^v<^><>>><^<<v<vv<v><^>>v><^v>>^>v>>v>>>vv><>v<^^v<<<^^<>^v><^<<v<<v<^^v><^^^^^>>vv^<<><>v<^<>vv<<>^^<>^>v<vv^^<^^^<v^>vv>^<<vv>v<v>>^^<>>>^vv^^^^^^><vvv>^><^^>v>^vv<<vv><><<>vv>v<v>^><><^>>v^>^>>v<v>vv<vv<^><v><<v<vv<v><><><v>^<>^<vv<^>^^v>^^^^^^v^>^<v<><^^^^<>><v>>>>>><<>>>>^<vv><<^>>>>>^>vv>^<<<<>v^><v>>>v^<vv^>vv^>>v>>v^^<><^<>v<^<v<<^<^><^><><><^^<^<><>^>v^<^>><>>>^^<vv<<vv>^^v<<vv^^vvvv^v^^<^v^v^^^^><v^<>^^v>vv<<^<>v<^>v><>^^^<<<^><<v>>v<<v<v><v^<v^vv^<vv<>^<^<>^>v>v<<^^^>>^^<>^<<^^<^^v^v^^v^^<^<<v>^<v>^^>^>^>v><^v^^^v>v^v>>v^>^>>v<>^<^v^^^^^<v>v<v^<^><^>>v^<^<<>^v^v^><<v

2024/day15/input2

@@ -0,0 +1,71 @@
+##################################################
+#..OO..O.O....O...O..O...O.......O...OO##....O.OO#
+#O.#..#OOO#..O..OO...O.O.....OO..O#O#.OOO.....#..#
+#.....O.......OO.#OO....#O.OO.O..OO.O.O.O..##....#
+#.O....O...O#...#...OO..#..O........#O..#..O..O..#
+#O....O...O.O..OO..OO..#OO.#OO.O......##..O..O...#
+#..O.##..#O...O...#.#.O.O..O.#......O..#.#...O...#
+#O.O.........O..O........OO....OO......O.....O#..#
+#...O....#..O..O........O......O.#.....O..O#..O..#
+#.....#OOOOOOO.O.....O.OOO.#.#.........O#O....O..#
+#.........OO#...O.O.#.O..O.....O..#.O..OO.O.#..O.#
+#OOO...............#O.OOO..O#....O.....O...#....O#
+#....O...O.O.#....O.O.O.OO..#......OO..O.OO.O...O#
+#O.O..OO..#...........#O...O.O#...O...O..O..O.O..#
+#OOO...O...#O.O.O...OO..#OO.OO#..O...O..OO...O...#
+#..#........#...O..O...#.O..OO..#O.OO.#O......O..#
+#O.........O.#O.......O.#.O.O....O#...OO...O...OO#
+#.#...O.O....O.O....#...#.O...............O..#.OO#
+#...O.....O..OOO...O..#O..#.......#OO..O..#...O..#
+#OO.O#..O.#..O.#.........OO...O.OO..O....OO.O....#
+#.O..O...O.......OOO....OO....O.OOO........O..O..#
+#O..O..#..O.O.O..O.O.O..#O.......O..OO..O..O.....#
+##O#.....#.O.....O#......O.........OOO.O...#.OOO.#
+#O.#OO...O..#.O#.O..O.##OO......#..#OO.......O.#O#
+#..O...#..O....OOO..#...@....OO.#.O#..OO......O..#
+#.O#.....O...O..O#..O.OOO.OO.#O.O.O..O....O..OO.##
+#..#.#.O#....#..O.O.OOO.......OO......O.OOO......#
+#.....O....O...#.OO.OOO..#...O..O...O..#..O#OO.O.#
+#OO.O.......O#...O.O......OO....#.O...OO.O..O.O..#
+##O..O..O##..O..OOOO...O..#O..O.OO.O....O....#.#.#
+##..OO#O.##...#O.OOO.......O.....O..O..OO.O...OOO#
+#...#..OO.......O.O..OO..........O...OO....OO.O#.#
+#..O.O..#OO.....O.........O#O.#..#..O...O.OO..O..#
+#..O.#O...O............#O.O.O...O..O.O...#...OOO##
+#...#OO.O#.OO.......#.......O..O.##....OO....OOOO#
+#.O.....O..O...O.....#..O.....O...OO.O.O.......OO#
+#...#O...O.O.#O..O..#..OOO#....O##....#OO.#.#OOOO#
+#.O.#OOO......O...O..O.#O.OO..O.......O...O..O..##
+#O.....O.#....O.OOO..O...#O#O....OOOO........#...#
+#O...#.O...O.OO..O.O.O.............OO.O.#...#.O###
+#O....OO.O.OOO#...#..#.....O#O..O..O.O..O#.O...O.#
+#.........O#.##.OO..O..O..##..O........O..OOO....#
+#.#....O.....O.O......O.O.O...OO.O....O..#O..O...#
+#....O##O.O..#....O.OO.O...O..O..OOO..O...#..O...#
+#O#....#.......O..O..#..OO.......O.OO.....OO.O...#
+#O...O#OOO.O......O......OO..O.#.O.....O.O....OOO#
+##....O##...#O.....O.#........OOOOO#..O....#.O.O.#
+#O...O.....OO.....#O...O......O..OO.O..OOO.O#.O.O#
+#O.O..#.O.O.O.O#.O#....OO.O....O.OO......O#OO...##
+##################################################
+
+>><^v><>^v<<vv<>vv><v><<^^>>>>^^><>^<^^vvv>>><><>v^^^^<<^<^><>>>v><><vv^v^<>>>^>><>v>v>^v>>v>>>v^<<^>v^<v<v<v^^>>v<^v>vv^><vvv<<^<><>^<>vv>^>^^^v<^^>v^>v>v<<^>>>^^vvv<>v>><^^<><<>v>>>^<v>vvv^^v>^^v<>^^<^^v^><>>><<<v^>v^>v^><v<^<<>^v^><v<^><^<>>>>v^<><^^>>>^^v^^<v^^>^v^v>>v<><<<vv^<<>^>^v>>v^v^<^<<><^>>^vv>>vvv^<v>v^<vv><^<<<vv>vv>^<^^>v>>^^^<^^^^<<^<<<<<<v>^v>^^v>>>^<>vvvv>>><<><>^v>>vvvvv^<<^<>^>v>>^>>>v<v><>^v^v><<^v<vv<v^<v^v>><^v<^>>^>>v<^v>>v>>v^v^v<<>v>><<><^<v<^<<v<<v>>^vv^vv<>v<v^<^^>^^^vv^<<>^>^^vv>^^<>>v^<v>>>><v<vv<v<^><^v<^vvvv><v>><<><>v<^<^vv<<<>><^<>^<^<>^<vv^>>><v<^^>vv<>v^>^<<^<^>^<^vvv>>v^>>>^<^>vv^<<^^<<>>>v><>v>^>^v>><><^<<>v^>>^<<>^v^<^<><^^^v<>^<v^v^v^<<^^<<<^>v>v<>^^^^^>>v>^v^v>><>^<<>^<v>>v^><v><<<>v^<<^^><>v<<v><vv^^<>v<<v<>>>v>v<<^v<vv><v<v>>^<<>vvv<<^>vv<<vvv>v>^>>^^^^^^^vv^v>>>vvvvv>^>^v<>v>><^v^^v^^v><>vv>><v<^<^>^v>^^^<<^><v>v^<^v<>><<^v^<^><v^v^^><<^v><><^^v<v><v>^><<^<<<^v<^>><>^^vv<^<<^^^^^v<vv^<v<^<<>>>^><^^>^v^v>v^<v^v^v^^>^v>^^><>v^v>vv>^>v^><v<>v<v<
+>>v<v^<vv<v<><<>><^<^<^>><^<>>^>^^<^v^^^<v<^^vv^^^>>^>v>>v<<v^<>vv^<<>^v><v^v>v<>v<<^^^^<^v^<><vv^^v>v<<>>^>>^<^>><<v^^^>vvv>><>>^<^>v><v<<^<<v<<>v<^vv^v<>^>^v^><<<><^v>><v><<^v<<^<^<>>>>v><v>>v<>>><v>v>v<vv<>^>v<^>^^>v^^vvv>v>v<vv>>v<<vv^^v>><>><<<v^vv<<v^^v<<><v>^^>^^vv>v><>v<>>>>vvvvv<>v><<<<>vv>vv><^v^<^<v^<><<^^vv><^<vv^v>>^<>v>><>vv^>v<vv^<^><^v>^>v>^v<v<>^v^<>v><v<>>vv>>vv<^>^<>v><<vv^<><^<>vv><<<<v<<^v>>>^<>>^v^><>v^>^<<^>v^^^vv>>^vv^<<v><>vv^^v><vv><v<vv^<^>>v<><^<^v><^<<<^^<>>vv>>^^<^<<v>><>^^^<vv^<v<vvv><^^>^<<<^>v>^^v<<<vvv<^v<<vv>vvv<^<<v>v^><^^><>^<vv<>^<v<>v><<<v>>v^v<>>^><v><<^v>><v<^<vv^<^>>>>v>^>^<><v^v^v<v^<vvv<<<^<vv^>>v^^<^><^v><^^>v>v^>^>v>>^>>>>^<<v><v<<vv<<<^^<><v<^^<>v>>^^>v><><><<><v><v<>v>>^>^<v<^>^^<^><^^^v>v>>^^<<>>>vvv^v>v^v^<>^^<^><^vv^>^^^>>^><^><>>^<^^<<>>>v<<><v><>vv>^>v>^<^>^^>v<>>vv>^<^^^><vvvv^^vvv<v<<^<v^<<v<^>v><^<>v<<^>v><>>>><>>><^><^><^<<v^^^>^<v><v<>v>v<<^<>^vvv<>v>>>>^v>v^>v<^>^vv<<^<v<>v>vv^^<<vv<^^>v^<><<<v>v>vv^^>v<^^v><<>v>^>>^^v>>^>vvv>^
+^^<v><<>^vvv<^v^>><^<^<>^<<v^v<vv>>vv^<^^<vv>><vv^v<<>^<^><^v>^>v^<v>>>>vv>vv<^>^<>^>>^><^>^<>^<>^^v>^vv<^^v>^>v>v>v<><<<>>^vv^<>vv^^^^^<<v>^^^^<<v<<v<v>v<<<^v^><<^>vvv>><v^^<<^>vv>^<<>>vv><<>^v>v^<vv>^vv<<^<v>>>>>>>>><>><^><^^^^><><<>^^^<<<v^^<<>^>v<^>^^<<><>^<<<>v^<>^v^<>v<^<<v^vv>v><^<^v<><<<>>>v><<<^<^>>^<^^><v<v^>vv^^><v>vvv^><^>^^>v><<v^>^v>^><vvv^<^<^^<^^>>>v^>^>v<v^<<^><<^<v<<>>^>^v<v>v^^vv><vv^>v<<v>^>v^v>>v>vv<<<<<^><^^<^<^^>><vv>^<<<vv^^v^vv^^^>v>vv^v^^>><v>^v<^v^>>>^>>^>>vv^v^<>^<>^><^>>^>^><<><^v^v<vv<<vv^<v^v^><<>v<^><>v>^v^<^>v><^><v<>>^v^vv>>^v<vvvv>><><>^v^vvv^<v^v<v<>^<v^<<v>v<<<>^<<>>v>v>><<^>><^<<<<<<<<^^>^>^^>><<>>^<v>v^^>v>>>><^^v^<>vv>^^vv<^<>v^v<<^^vv>>v^>>v><v^^^^<^v<<vv>vv<>^>v<v>v<><<<v<^v<^v^^^<<^vvv^>>vvv^>>^><v^^><>v<vv><>v>v^<<v><v<^><<v<^<v>vv<<><<v><<^^v>^><<<v<<v>^v>vv^><<<^>>v><><<<vv^>>^^<<^>^v^<>^v>v^>v><>v>>^v>^<^^>>>vv>>v^<>vv^^v>>v<^<>>^<^^>^>vvvv<>vv>>v<><v>>v<>v><^^^<<v<>v>v>>^v<<^<>><>^^<^<v<^^>><^^v<<<^>^>v^<>^><><<^^>>>>^<v<v^>>>>>><<<>^v<v>
+>^>v^^<^<^<<^<vvv^>v^<v^^v>^<v><><^<^>><^v<^^^vv<v>v><^>^><<^^<^^v^>>><<v>vv>><><<<^^>>^^>>^^v<^>v^>><>v^v^>^^<^v><v^>^^<>>>v<<v^v<^>v^<vv^><>><^>v>v<^>>^>>>v^>v<^>^<v>>^<<^<v<vv>^<v<<v>^<v^<^<^v<><v>^vvvv<>>^^^<<<vv<>>v>v><vvv>vv^<^^^^^>v<^^<^>>v^^<>>v^vv^^v^><v^^^^>^^vvv^<^^<>vv^v<>><^^>v^>^v>>>^^>>>^<^v<v>^>vvv^^<><>><^vv>>^><<<<<^>>>^<vv><<v>>>v><><>>><vv>v^<^>>><^v>vv<<^<>v<><>vv><^^<^v^<<^v>^>v^vv<>^v^>v<v<>^<vv^v<^>^<<^<>><^^^<><^vv^v^^v^<vv>>^^>^<<^>>>><>^^<^^<v<<<<v>>>^<>^^>v^^^<v^>>^^v>><v>v^vv<v>^<^<<><v^<^<^^vv^v>><v<<^v<<^^^<<^v<v^>vv^^v>^>^v><^>><<^<v^<vv>v^^v><<^v><^v><>^^>^v><>vv^v><<v^<>^^>v^><><><^v>v^v>vv>^v><><<v<><>^<>vv<^<>^<<v^>vv>^v^^^v<vv^v<<<^<><<<<<v>>^v<v<<<v^v<vv<>^v>^<^<vvv>^>v><v<>v><>vvvv>^^v^^<>>>v>>>^^>vv^v<<^>v^<v><vv<^<>v<<^<<<vv^^>^vv>^<><<>^>>v^v>^<^v^<v<^<<>^<>^^<>^<^><vv<>^<<v<<><^>v><^<><vv<<v^<^>^<>>vvvv>^vv^vvv^^v><<^v<><<<^vv>><<^>^<^>v>v<>>^<^>^^v<^v<<^v>>>><>vv<^<v<^^v<>^<<>v^v><<v<v<>>^>^^<<v>^^<vv>vv<>>^>v>v>>^^v>^^>><v><^><v>>v<><^v<^v<^
+<>v<v<^<>v^>><^<^<v<>>v^>v<vvvv<>^^><^>^>>^^>^v<^<v^<v><>v^<vv<^<v<^><v<v^>v^<<>>^^>^v<>^v<vv^<<v<>><vv^<^^vvv<><^vvv^><^<<v^^<<v^^><v><^v>^<^v^>v<>>^vv><<^v<<v<<vv<vv^>>>vv>vv^><v<<<^vv><>^v>^><<^v<<>>><^>><>vv^<vv<><><^<>^<v>v>^>>>>vv>vvv>v<>vvv^v^v<^<^v>><<>><><>vvvv<>vv<vv>>v^>><>^v<vv^v^>><^vvv^^<v^><v<^vvv<><><^^^v^<<v<>v^>^v<<>^>>^v^>^>^v>^<^^<>^<^^><>>v>^^><v^<v>^>v<v<<<<<<^v><vv<<^vvv>^>><>^><><v^v^^<vvv<^^<v^^>v<v<>v>^>><<^vv><<>><<v<><v<>^v^^<>v^v<v>v^>vv^<<>^>vvv^v<v^^><>v<<>><<v^<><^^vv<<<^><<><^>vv>v<<<^><vv^>>v<<><>>v^v^v<><<>^v>>v<v<vvvv<^^>><^><<>v^^><<v^v<>v<<v<^<^^<>v^>>^v^<<<>>^v^>^<^<v<v><^<>^v^<<><>v>^^^<<^<v^v^>vvv<v><^v^^>v^>>v^<<><<^^^<^><v<v^v^>><^^>>^<vv^>>>>^>><^v^v<^<v^v<><vv>v^v><>^<v^><v^v><>>^^>v<<<<>v<>v>v^v<><<>^>><><<^><<><^vvv<><<^^<v<v>^v^^>>v<vv<^<<^><<<<>><^v^>v>^v^<^<<v><vv>^^v<<><^^><<^v<>v<<<v^vv^^^>>v<><><>><>vvvvv<>>>vvv<<<^v>^^^>v>>v>vv<vv^vvv^<>>^<<v<>>>>^<<<^v<<^^^<vv<<v>>^v^<>^<><>v>v<^<<<v>^><v<^>^v^v^<vv><>v^>^<^^<vvv><<^>v<^^<^vv^^<v^v
+^<>v>><<v^>^v^<>^^^>^>>vvv<>v<v>^<^vv<v^><vv^><>^v<<vv<>v><^^v^^v^^^^<^^v<<^^vv<<<<>vv<v^^v<^v<^>>v<^^>><vvvv^<v^<v<<^<>^^^<<>>v><^><^<v>v>^^>v><>^^vvv>^<^^v<v^v<<<^<>^<v<<<<v><^>^^<>vv<><^><>v<>v><^vvv>>>^>>v^<vv><v<>>>><v<^<^^<>^v><>^^^>^>v><^<v^<^v<>v>>v>v^<>^v<><>>><v>^<<<<vv>>><v>>v>^^v>><><^<<>><<<^<<^v^v^>^^><^<<<<>^><<<^v<<>v<<v>>^vv<^v><<<v><^^^><v^^<^vv>>vv<v^<<>^<^>vv<><>^v><>v^>v><^^<^v^v<^>vv>v><^>^>vv<v>^<^><^^^<>^>>vv<<vv^<v>>vv>vv<v<v<^<<<<<^<^^<<><^^<vvvv^<v^>><<<v>v<>><>><^vv<v<<v>^^<^^><^^<><^>><^>>^vv<^^v^<^v^v^<v>v>^><><<^>v^<>^>><^vvvv^><<<v<v<>>^vvv^vvv<><><>v><>v<vv>v>>>^<><^v>>^>v<><<v<>><>>>v^v>v><vv>^<v<^^^><v<<v<v>>><^<^^v^^><v><>><>><^<>>^<v^<<<v^>v^^v>>>^v>v^vvvvv>^<^^>><v^v^>><vvvv^^>vvv<^v^<^>v<^v^<>><>v^>>v<^<v<v>^>v><v>>><^v>^><v<v<vv^^<<>><<<v>^v^^v>v<><>v><<v>vv<^^v>>^>>^v^<^><^><v>^vv^v<^^v>v>v><^^^<><vv<<^v^<v<v>v>vv^>v^>>^vv^vv^^>v>>><<>^<vv>^>^>>^>^<>vvv^>^^<^^><>^vv><>v>><vv<^vv<^<<v>v^>^<>^^<^^>>v^<>>>>v^>v^^><>><v><^v^>>vv>>v>^^v^>^<^>>v<>v^>v
+>^<<<^>><v<<^^><<v^v>^<>^^<>>^v<<<^vv<>><<^<><>^<^v<v^^<>v^<v<<vv^<><<v>^<<>>><vvv^>^>v><^v>^<v<v^<<<>>><^><v<<<>^^<<v>^<<v<vv><v^vv>>^<<v><>>v<vv^^<^^<><v^>^v^<<<v>v^^vv<v^>>^^^v><<^><v^^>vv^^>v<^>v>v><><vv<<><>^<<>>v^^<>vvv>v<<<^^<>^^<vv>^^>><>v>v>^vv>v><>^^><<^v^^vvv<v^^^v<^^<<<v^<v>vv^<^^v<><^>vv>>vv>^<>>^v^>v<^v<<v^>^vvv<v^>>>v^^>>^^v<v^^<>v<v<>^<<^>>v<<<>>v^<<<<v><<v^^<v^>>^^<^>^<<><^^>v<vv>v>v<^<v>><>v<^<v>>>v<vv<<<>^<>^^v^><^<>vv^^>>>^>v^<<>v><<v<<^>^>^<>vvv<vv>><<><>^vv<v><^<<vv>>v>>^<<v^>^^<v>>^>^>v^>><>>v<v<^<<<<><v<>^v^^<^v^^v>v>^v<><>>>^^><<<>v^^^<^v<v><^^v<>v<v><v>^^<<>^^v<>>^vvv>><<<<^vv^v>^v<>^>vv^^vvv>vv^><^<<>>v>^vv^v^>><<v^^>^<>>>vvv>^vv^^<>^vv^>^<><^<v^<<><v<>>>>v><>v>^vv>>vv<^^<^^>^>v><^><v^^<>vv>>><>>^^>>^v^v<^<>^vv^>v<><<^^v<><<v^^<<v><>v^v<>^<>v^^<<^^^^^><>v^v><^^v^<^><vvv<^>^<<^^v><^^>v><v>>^<vvvv><^<v>><<<>v>>>>^<>^<^v><>^<v<v<<>^<<^<^v^>v<<>^>^<v<^v^<>^v<>vv>v^<vv<^v>vv>v<<<>^v<>^><v><<<>^^<^^<v^><><<><^^>vv^^<^<^v>v>vv^>^>><^<v<><^><<>>>>^vv>^<v<><<<v<v>>v^^
+vv<v>>>^<<vvv^>>v^^v<v^<><^^v<v>^v^<>><>>vv^>>v<<>v^^<<<>vv>^v^>v<>>^>v<^v><<>>^<>^^<<v>^^>>^v><>^^<>vv>><v>vv<><^^v^^<v^>>>^v^^<v><<<>^^vv><>v<><>>^^<v^v^<vv<><vvv><<vv^>^<><><<v^^><^v>v<^^^>>^v^>^><vv<<<>v>^v><v>^>v<v>^vvv<>v>><vv^v><<vv<^^>>v<>^<>v^v^^>^^<vv^><^<^v>v<vvv^><v^<^<v<><>v^^v>v>vvvv^vv^^^>v>vv<>>^<v>^vv^>v^<<v^v><>>v^>vv>vv^>^v^>>^<><^><v>v^^<v<>^><<>v<^>^^<v><>>><vv><^><v<^><<>^<vv^vv>^>^<^^<<^>v^v>^<^<v<v<^<vv^>>vv^^<<^^vv>>><^>vv^><^<><v^<^^v<><^<v<^v^^^v>>vvv>>^^^^><^>>>vv<>>v>>^^>^^>^v^vv^>>^>>v^v^^^v>>><>^<>>><^<v<<<><<>>^^vv<vvvvv^vv><^v^<^<<v^^<>><<>^<^<<<^^>v>v<<<<^v^v<>v^<<>>v<vvv>^vv><>^^^<>v<vv><v<<><vv<^v<>>^v<<<>v^^^^^>v^^<><<<vv^<>v<^v>v<vvv^<^^>^<<<vv<>^>^<v^<><^><^<^<^v><v^^v>^v^><^^<<^><^^>^>>^v>^<>v>>vv>v<<<^^v<^v<v>^>><v><<^^<<^v><<v<^^^^v>>^v>>>v>^^^^v>^<<<><<v<>v^>v^^>^v>v<vvv>^<>v^^v>^>^v><v<^<><^<^^v>>^<<vv<vv>>v^<vv<v><<^>>><<^>^>v<<^><^v^v^>^>^vv^vv>>vv<<<<v><^v><^>>^>>>v>>^>^>><<>><>v^><^^v<<^^v<>^><^v<<<vv><^^^<>^^v^<>>v^<>^^^^<v>>v><<<><>^v>v
+v<v>v<>^>v^<^^<>^^>vvv<>><>>v><><<<>><^^>^<<<v^<vvvvvv<^v>v^>^>^>vv>>^v^v^<><><^><vv<>><<v>^v^vv><<>><vv><>v^<^<>v^<<v>^vv><<v>>vv><^>^>vv^vv<<^v<<v<><vvv<^>vvv><>>v^<^^^v^^<^>^^^>vv>^^<<v<^^>vv^v^<>^<<vvv>v<<>v^vv<v>>v<v<vvv<>>^>>v>vv>^v^^<<v>^vv<>v^>>><^<<>^^v^vv^v><vvv<<>>^^v<^<^<>vv><^>>^<<>v<^v<>^<>v^^vv<>><><^^<^v^<v>>^^<<^^v><^^v^^vvv>v<><^>><^<^<>v>>vv^>>^vv<>>vvv^><v<><>^v<><<>><>^^<<>>v<<^<><<^^v<<^^>><<^<vv<<<v^^<^<>>vv^^>><>>v><^<v^^v<>^>>^v<v^><v><^><<^<v<<vvv<<^>^^><>^<<><<><<^>>vv>>^vv<>^^>>v<>><vvv<<^^v^^<>>vv<><<vv><^^v^><v>^<>^^><^v^>v^v><v<^v^<>^<<>>vv<v<^^vv<v^v^vv<><vvv><vvv^^<vv><<<^v><^vvv<>>^v<>^^<^^<vvv^<v^<<^^>v^<^>v<>>^vv<<>^><>>v^^v>v^<v^^^<>^v^v>>><>^>v<>^^<><^><<<<v<<<vv^>>>v^vv^><>>>v<<<>v<<<v^^>v<^>^v^v<^vv<<<^>v>v^>^^><^>v>v><v><^^v>^vv>>vv^>^<^v>><>vv<vv^<^<v>^v^v>^<>>v^<^^^><v^v^><<<^^>>>^^>><v>^>^^><^^v>v<>vvv><^vv^^^^v^^<^><>>^>>^>^<v^><>^^<v>><vv><vv^>>>^<<v^v<<>>vv^>^>v>v^><v^^^^^^<^>vv<>>^>^>>^>><v>v><><vvvvv<^v^>v^>>v<v<v<^<vv^>>>>^<>^<<v<><^^><
+><<>^>>^<^^v^^><<v>v>v^>v>>^^<><^^<^vvv<><<^^<^^><vv<^^v<>^^v^^>^vv><v^^^<>^<<<v><>^<<>vvv^v<v>^^<><>>><<>><^<>>^>^<^v>v>>v^>^^v^^^>^vv><v<<v>vv^v<>v^^^v<v<v>><^<>><>>vv<^>v^>^v<>^^^vv<<>v<<v>^^v><>^<<^>^>>^<<>^^^<<^vv^<<<^^^^<v^^^>>^>v<^<<^^>>^vv^><vv<^^^^<v><v<^v<<vv>v>v>^>>^^^v<<vv><^vv^^>>>^>^^^^<>>>>><^>>^^<><v>^<<v^>v^^vv<v^>^><>>><>>^v<^><>v^>^>>^>^^^>vv>v>^^^^vv<>>>v<<^^>>>v^v<^<^v<v><<>>^^^<>^v>>^<><v<>^><^>>^>>v><><vv^^vvv^<<^^v<vv^<<>>>v>><^<<<><v^>v>><>^>>>v^vv<>vvvv>v>>vvv>>vv^><>^^>v^>v<v<v>>^>v^vvv^^>>v^>><vv><v^<v<>>^>v<v<v>>^<><v<<v<<^<v<><<<>^^>v^v>>vv>^^<vv^v^<>>^<>>^v<^<<><<^><v><>^^vv>^<^^v>>^><^<^^><^v<v>>>^vv>><v>^v>^<v^>><v>^><^vv><v>^^>>v^>^^<^v^<<<v<^<<^v>^<<v>vv<v<<>vv^vv>^>><>v^><<vv>><><v^<^vv^<<>v<<>vv^^^<^vv>v^v><>^>>^v>><^<^^v>v^>vv^^>>^<><><^v<><<^><<><><vvv<<v<<vv^<<<<^<^v<v<v<<v<^>>^v>v<<<v^vvvvv<<^><vvv^<<>><v<><<^<>><^<^<>>^<v>v>><<^><>v>^>^v><>>^>>><<v>v<vvv>>>>>><<<v><>v>>v^^vv<^^<<<>vv^>vv<^^>^<><vv<^^<><v<^>v<v<^>^^<><^^>v^^>^>>v>vvv<<<v^>>>^<^v
+v<>^^^>^<^>^<<<<v^>^vv^>><>v<<>>^<v<^v>v^^^>><>>v^^<<><^^^^>>^<^^<v<>v^v>v<<v>^>>v>^>^v<>^>v<<>>^<>^^<^<>>>^v>^<vv>>^><^^>><<^^><>^><<>^>^<v<><^^<vv>>v^v>v>v><^>>>>v<>^<vvv^^>^v<^^v>><<v<<>>>v<<v^>>^<>v<v>v<^>>^>><>>v>^v<>^^<^><>><>v<v><vv<>>^>vv^>^^<v>>v>>v>>^v<v<^^><<<<<^vv><<v>vv^>>v><>><vv^<^v^v^v>><v<^^>vv<>>^^<^<v<^vv^^<<<^<v<^>v^v<vv>v<<><>^v<^<<<vv^<>vv^v<>v>v<>^^^>^^>>v>vvvv><vv^v^v^v><<>v>v>>^<vv<<<v><^>><^v<^v><v>^>v<<<<vv^<^v><<>v^<<<^^^^<>vv>vvv^>^v>v>v><><<<^^vv^^^><v><v>><v^v^^<>v^^>vv>v<>>v><^v>><<><>v<^<>^^vv^^><>v^^^<vv>^>^^^<<>^<v><<<>^<^<<v^vv<<<vv^>>v<>>vvvvv<v>v><^vv>>v>><<><><^^>^>^>^<v><<<vvvvv>^<v<v^v>^^v><<<^v<>>^>>^v>^^v^^^^v>^>>v>vvvv<vv<^v<vv><^>v>^>^<>vv^^>><^^>>v^v<^>vv^<vv^>v^>v>>>>v>v^v^>>v><>v^v^<^>v<^^^^^v<<^>v>>^<v<v<>v>v^v>v^>vvv>vvv^vv^^v>^>v^v<v>^^>v<^vvv><>^v>^vvv>v<><vv<^><^^>v^^>><^<v^>^<^>vv>><<^^<>^<>>^><^^v^<<>>^^v<v^>>v^>v>^v^>v>>>>^>>>^>^><>^v^v^>vv^^<^^^>>^vv^^^>v^>>^<<v^^^v^vv><<^^<<v<v>^>^v^^^>><<v^<>><v>><>^<><<v<v<<>><<^>vv>vv<v<v<<<^
+v>vv<<v<^v<v<^v>^v<>>>^>>><^^^><v^<><<<>^v>>^><<v>>^v>>^<>>v^>^^vv<<^^><<>v<vv^v^^^>^<>>^<<<<^^^><^<><^vv><>>v<^^>v>^v^^v><v>^v^>>^<^>vvv>^v<>v<>v>^^^><>^vv^<^<^>v<v<v<v<>^v^<vv<<v<^vv<v<v^^<vvv<<^^v<><>>><^v<v^v<^<<vv>^<>^^^<^><<v>>>v^v<^>v<^>^<vvv<^^^vv<^v<<<<v><<^<vv<v<>>^^^^<<<><v<<><><^>v>><v<>><^<v<^^>^>v^><v^<^<^<<>v^vvv<<^^^><^><^>>><<<<^<^^v<^<^v^<^><<^>>v<^>v<>><^v><v<<v><<<>>vv^<>^^^><^<vv^<^<^<v<<^><>^^><v^vv><^<^>v>>>^<><v<v>><>v<>vv<^^<^<^^<><v^<>v<><<vvv^vv>v^vvvvv<>v>>v><^^<<v>><<>v^>^v^><^<>>vv<>^^<<^<<v<<<v<^^^^><<>v^^<^>^v><><^>>v<>^vv^v>^v>>vv<^<^>vv<^<^<^^^<>v^vv><^^>v><<<<>>v^vv<^<v><>v><v<<<vvv<^<<v^><<<><><^vv<>v<vv<<<<^^v^v<<v><^v^<><<>^<^^vvvv<<>^^vv<>>><v<^<v^^vv^v^<v<><v>><>^v^^^>v>>^>v^>^<<>v>>^v^^<<^^v><>^v^>vv>>v<v<^vv>>^<^v<>>vvvv>>>^^<v<><vvv^<><>^><>>v>><<^<>^>^>v>>>^^<^><^v>><^><><<v<^v<v>>^v^^>v^v>>^v^v<<<^^^<^<^<<^v>^<><vv^vv><>>>v>^<<><>v<v>v>>>^>v<><>vvv^v>^v^vvvv>^<v^^^^>v><v<v>>^<^>v>^>>><<v>>vv<>^^<<>^v^v<<>vv<>^v>v<>^^<<>><<^vv^>><v<v><vv<<>v^
+^^><v^^^<v>vv><v>^<<v<^>>vvv<^<vv<>^v>v>v>v<v^vvv<>>v>^v><vv>>^^><>v>v><<v<<vv><v^^><vv>><^>><^v>v^vv^^<<><^>v<vv<^><v>v^>>^><<v^<^v<<>v>^><<<^<<>^vv<>>v<<<<><>v>^^<v>><^><<vv>>>v^>v<^vv>v>^^<^>>v>^^<v<<<<>><v<^<v>>v^vvv^v>v^<^v<v<^^^<^v>>><<>>>v<<<><>^<>^>^>vvv^^^>>v<^<v<v^^<^<^><^^^<^>v^>^<^v><><^vv^^><><^>^<<^>>v^>^v^<<^>v^>^<^>v>vvv<<v^<><<>v>>>>^>>v^><^vv><v^v><<vvv^^>>><<>vvv<^<<><vv>>>^<^v^^>^>v^<^><><<vv^vv<vv^>v^vvv^^^<>^v>^>><^<<>>>>>>v<^>vvv>v^^^<<^>v<^><>>v>vvv<^^><^<^vv>^v<><v<v><>><vv>^<vv>>>^>^<^><^>vv<v>><v^v><><^><<<<v^<vv>>>^>^v><>>v^v>^v<^^^><vv^<><><^^>^^>v>^^^<^v><<<>>v<>>^>^^v>^^><>v<^^<<v><>>v<v<><v><v^^><^^>>><<^>>^^vv><<>><>^<<vvv^>vv<<v<v^<^<vv^<><>>v^<vv<^^<v^^v>^v^v^^<><<<>v<>>^>>^<^<<<<vvv>v<vv^v^>^>>^<^<<>vvv<><v><>vvv>>>>^^>^v<v>v>><v^<^^v<v>^^v>>v<>^^^><^^^><>>^<v^<v^>^^<<>>>v<^v^>^^<vvv<^^^<v^<>^vvv><^<><>>>^v<><><v>^>>vv>^^vv^^<^<>vv<^<^<vv><<>^>><<>><vv^>>^v><^v^^v^<^>v<<><v<^<>>^v^^<^^>^>><>>^><>^><v<>v^>>^^^^^^<^>^^><vv^>vv>>>>>^>v>^><v>^>>^v>>^><<>
+>v><>^v^^>><<<<^^><>^><v^vv^v>v<<<>vv^^^v^^<<<>v<<^^<>v<><^v<<^^v<>^v>^v<^v^<vvv^><<v><<>>^<vvvvv<^>v^<><<<>>v><>v><vv>^v<v<<>^<v<v^<^>^vv^^><><v>v>v^>v>><v^^^<<vv><v^<^<^^^<><^>^<><>vvv>v^^<>vvv^^v>v><^>^>^<<<v>^v<^><^<v>vvv<vv<^><^>^>v>>^>^^vvv<>v<<<^>vv^>v>v^v<v>>v><<>vvvv>^>^v<^v<>>v<vvv>v><>v^>>^<^^>v<^^>>>><vvv<^><><v><^v>>^>^^>^^^>^>><^<vv<>^<><vv>^^>v^<<^<^<v<v^v<v<<v^v^^v<<v^^<<v^><vv>^<>vvv><>>v^^>^<^v<^^<vv^<^^<>^^v>>>^>^^v<<<<>>vv>vvv<^>vvvv<^<vv^vv^v^^<>^^>^>v<>>>^<><^>><^>v<<<^><>>^<v<v>>v><<<<^>v^^<v>>^^vv<^<<v^vv<^<><v<>>>v<v<>>^>>^<^<<^v>^>>><^^vv<<vvv<><v<<v<v>>^>v^><^>^vv^<>><<^>^>><v>^>^>v><<>^<<v>v>>^>v^>^^v<>v>^v>v<>>^^>>>>>^><>>^>><<v^<^^>vv<>v>^>>^<v<v<<<<^<^>^<vvv<><<vv^vv<v>>>>^>v<v<v^^>>^>>>>vv><<^v<^<<>^<^>vv>^v<v^^vv>>^^^>>><<<>v^^^<^<^><v><^<^>v<><>><><^v^^>>^<<v><^^><v>>>^<><^><<^v^<>>^v>^^<>^^^^^^v<^<^v<<<<<>>>>vv><v^^v^<^<<<>>^<^v<^>>^>><v^<<>^v<^^v>v^v><v^vv^^<<<^v><^<^v><<<>v>v<>^>^>v>v>^vv<<>^v<<vv><^<vv<>>>^<<<v^^v<^v^><<<<^v^v<v<><><>^^v^<><^v^^<><
+^>v^<^><<<vv<vv>v<>>v<<vv>v>v<<<<<<^vv^<<<v^^v<v>>v^vv<vv^<<v<^v>v<^vv^<>^>^v><^>>^vv<<<^^^v>^<^><>vv<<v^>v<v^<<^><^<^>>^<^v<>^^<^v<^><v>><^v>^^<vv<v>v<>>><v>v^<>>v<<<^>^>v<<>>>^<v<>>><><^v<>vvvv^<v^<>v><v^>^^>^^^>^v^v<>^v>^^v<^>vvv<>><^^^<^^<>v>^>>v^<>^^vv<^vv<>v<><^<>^^><<<^^>v>v^^>>v>vv^>vvv>v<<^<v>><<<<>v<vv<><>^<v^>^>v^><>^>vv<><<^^><v^v>vv<v<^<v<<^>^<<<><^>^<>>^<^vv<>v>^<v<<<>vv<^>v<><^v><<<vv><<<v><^v<v<<vv<^v^<v^^<>v><^<vv^>><><^<v<v^<<>>^v>v>^v^<v<<v><v<>><><>>>^>^>>>v><>>^^<<<<<v^vvv<^v^<>^vv<>>v^>^<<vv^>>^^^<>v^v^vv><^vv>><^<>^>v>^<vv><v^^^v^<^^^<<^>^<>>>>^<^v<v<><>>^^<v<>^^v^v<>^>v<^^><^<<v><^>v>^vv<^vv<>>>>><v<^^vv<v<^>vv<^v^v^^v<v<<vv>^><<<<^>vv^><v<<v^>>^>v<v><^<^>^^>v><<^<>v<<v>v<><v^<<^>v>^<><v^<<v<v^v>^>vv^^<<^^v><>>vvv<>>^vv>><<^^<vv<>>>^<^^^><>^vv<v<^^v^^^^^<<v^<<v<>v>^^^v<^<^>v><v^v^v>><<>v><vv>>^vvvv<^^<<<v><<<vvv^>><v>v<^^^><vvv^^<<^vv>v^v^>v^^<>^v<v^>v^v><<<^v>^v>^<v^<v<v<^>^<^v>>v^><v^^^<>^>v>v>^^vvv>v^^>>^v<>>^v^<v>^^>^^<^><><v<><>^v<v<><^<v>>^>>><v><^v<>vvv^>
+<>><>>v>vv^<^^<^vvv^v><^><<>vvvv^><<<>v<<<>^><^v><vv><^<v<v><v<^v<vv^^<<^v>>v^>^>vv><vv^vv^<v^vv^^>^<<>v>>>>^^vv<v^^v<>>v>^vv^>^v>v><vv<^v<v<<^v>>v>><v<<v>^^^><>v>>^v>>v^><^vv^^vv<v<<^^v<>^<>v<>><^^v^>v^v>v>vv<<<v^^^^<^^v>vvvvvv^v^^^><<>vv>^v^><>^^v>>><^>v>>><vv<><v^>>v^vv>^<vvvv^vv>v<v>^><<>^v<>vv>vvv^v^vv^v^^<<vv<<^v>>^<>v^v<>>^<v>><^>^<>^^v^v^v>>vv><vv<>v>v>v^>>>>>^><<>^v<>^<^^^v><>v>^^^<>v^>^vv>>>>>><>v>><>>>v>><<^>v^^>v<vv<^^^>v><><<>v^>vv^^^v<<^>v^<>v<>>v>^^^v<v<v^<^>>v<^vvv<v^<>^v<<><v<v<<^v<vv^^vvvv^>v><<vv^<<^<<>v>^^^<^^^><>>^vv>^<<<vv^<v<v<<><^^><v^<<^v^^>^<^v<^^vv><^^>^<^><>^<v<<^^>v>><<^>vv<^>^><<v<<v^<<^v<^^^vv>>^>^>v><>^>>^<vv>>v>^^>vv<<<>>><>^>^><<>v^<<<<>^^v^<>>>^><^>>>^><v>v<>>^v<^>>><^^<v^vv^>^><<<>><><^v>^<>v<v>^<<^<^>^<>>>^v>><<^vv<^vv^v<>>v>v>><vv>v^^vv^<^^vv><^v<>^v>>vvv>v<<^<>^v^<vv^v<<>v^>vv<>^vv<^<^>><<>vvv^<>v<^<v>v>^^v^<v<<v^v^^^>vvvv><v<<v^vv<>vv^v^<^<<^v>v<^<<><<vv<>>v<^<^<<^>v<<^<<<>v><><^^>v<v<>v^>v>v><><<<^^<^>vv<v>><<>vv<<<>^v>>vvv^^v<^<v<v^v^^>><v<>^<^
+<v<<v><vv<>^^v^v>^>vv^><^<>v><^vv^<^>>v<v>vvv<>>^vvv<>>v<>^v>><>vv>^v<v>vv^v^^<^v><<<vv<vv<v^<><v^><^>>v>vv^<^v^<^vvv><>><^^v<^<^<>>^>^<v>^<<v><<>v^vv>^v>><v^v^v<vv^^v^^vv<v<<v^v>^>^^v<<^^^>v<><><^>^>>v>>v<>^>>v><><v^<<v<>vv>v>>>^>^<>v^>vvv<^<vv><<>vv<<><v<<<><>^vvv<><<v>^^^v^^v>><<v<v>v>>v^v<vv<<<>>>^v<v>v>v>^v^<<<^>>^>^^^<<^>>^><v<^v^>v<><>^^<v>^^<>^vvvv^^v^<<<^><^><<^>v><^v^>v<<^><<vv<v><vv<<><<^^v<v>^^^><<v<>v>>^><v^<v>^vv<<<<^vv<v>v>>>^><><<<<v>v<^^v><>^v<^<>^<<v<^v^>vvv<<v>^^><><v<><^v<>>><<^>v><><v<>>><><^v<^<<><v^^v>vv>v>^^><^<^>v^>v>vv<>^<<^><v<<v><^^><v^>v<^v>^vvvv><^vv>^^^><^v><><vvv<<v^^^^vv>>v^>>v^v<>v>>><>v><>^<^<<<>>>>vv>>v<^>>><^<^>^^>><>^^<<<>v><v^^>v^<^v<<>vv>v^<v<^v><vv^<<>>^^<^><^<vvv>>vv^>>^<v>v><<><<>^v<><^^vv<^vv<<v>>><>>v>^<<^v<^v<^^>^><^>^^>><<<>^>>>>v>v>>>^v>^^v<^v>^<>^>>^<><^>vvv>>vv<<>^v^>^^>^<^^><^v<>>^v<><<>v>v^>^vv<vv<<v<^^><<v<v>^<<v>v<<v>><^v><v>^<^<<^<^v<^v>>v^^^v>v<v>>>^<^<v<^>v^v^v>><<^>^v>>v^<>v>^>^^<^v>>^v<^<^^><><<<<^vv<<^^>^><>>^>>>v>^^>^<v^^<>><
+v<vv^>^<^^<><^^>>v>>v^^^<>v>v^<^<<v^^>>^>^>>^<v><^^^^>^<v>^v><vvv<^vv>v>>^><<^>>^vv<^^^^>^^v^<<v<><<vv<^<vv><v^v^v>v<^><<v^<<>^>><v<^v<<vvv><>>^vv^^<<^v<<>v><>^<<v>>v^v>^<<v><<v<^^>v>><vv<<^>><v<^>vv^vv<^<<v^vv<<^^>^^v><<^v>>>vv<^<^<v^^>^^v^>v><<>v^<>v><<v>v<v^vv^<^^>v<v^v>><^<<>>>v><^<v<><>^^<^<><^<<v>vvv<v^^vv^<^^><<v<vv^<<><<>>>^^^^>>v<^>>^v<v<^>v>vv<^>vvv><<v^>^^v<>^<>vvv^><v^<<<v<<><vv^<>>v<v^vv<><>v<<>v<^v^^<<v>^vvv>v<<v<v><<><v<^>>v^<^>v^vv^v>v^v<v<>><<>>>v<^<<^>vvv^>v>>>^vv><><<<v<>vvvv>^<>><^^v><><^v^v^^v<v<^vv^<>><^^>>>><^>^>^>v>>vvv<<>^><>^^v^^^v^^>v<<v>vv^><>><<v^<vv<><>v<v<^^vv<<><<vv^v<>v^><^v^^^^^<><<^<^^^>^^^vvv^<<^v>vv<<<v>v^<>v<<v^<<>^>v^vv^>^^>v<>vv^v><><>^<><>>><><^v^<>><<v<^v<<><v>vvvv<<^><v^><v>^v<><>v^<<^^vvv<<<>^>^>^^^>^v><^^<>^>^v<v^^v>^>>^v^v<<>vvvvv^<vv>^v<>v^<><^<^v<>^v>^^><^v>v<>v>vv>^>^v<^<<^>v^<v^<><v<vv>v>^^><vvvv>^<^>^vvv<<<^><^<v>^<^>>^^>^<<<>^>^vvv^v^<vv<^^v<v^^^>><v>^>><v>v<>><>><v<<<><^v^v^>>^^>>>v<<^^^>^v^^^><v><<<<<<^v><><vv<><^v>vvv>^v<v<v>v><>v<
+<<>>v<^><^vv^^^^v^v^v^^<v<^v<<>^<^v<^^<<<>v^>>^^^v<>v^v>>>v<<><<<>^^>>^<<v>>v^<v>v^^^>^>^><>>><>>^v>><<^^vv>^<^^^<>^>>^<v>v<v^<>>>vvv^>v<v<><>^^v^<vv<>^^v>v<><<<>v^v>v<^v>^<^v^vv^><^>v^>v^>v^^^<>v>v<<v>v>v^^>><>^><v<<><<vv^>^vvv^v>^^<<<>^>v<<v<v<v>^<v>v<<>v>v<><>^^<v>>^vv<<v<^>><>vv>v<>v^>^^><v<<><^><><v<<>>><v^>v<^<v^v>><<<v<<v^><vv^^<<^<<>^<>v^><v<^v^v^<>>>^^^vv^<v^>><>vv<<vv>^<^v<v^^^><^>^>^<^v>><^v^v^>>^^v^v>v>>v>>vv^^^^>><>vv><vvv^v><<vv^<>>^^v><<<><vv>v^>^>^<^>^v>^<v>vv><><^<<<<^<^<v>^vv<<>>^v^^v^>>><vv>><^><v>>^<v>v>>v<v<v>><v<><v^<<^v^<v^v<<v^^<<><<^^v>v>>^<^^v>>vv<<^vv^^v<^>^^v<^^<<vv>>vv><^<v^^^<<^vv<<<v<^><<^><^^vv>^^>^^^<<v<v^><<<^v>>vv<vv^^><<<><^vv^><v>^<^<>>vvv^v>><^<vv>^^^>^v<>>vv^^<v<>^<>>^^v>>>^^vvvvv^<^<<>>v<vv^^<^<v><<>^<<>^<v^^^^>>>>v<v<><^^>v^><<><vvv^v<<vv<^v^v><><>^v^^v>>^<<v<v^^v^>>v<^<^^^v<<^>^^<<<<<^<>^><^<^v>^^^<>v^<>>^^>v^<^>^>^>^<<^><>v^v>>^<><^^>^>v<<v<><vv>>>v>>>^>>v<><<^<^v^<v^<v^<v^v>>>>v^<>^v<vv^^<>vv<<vv><<>>>^>^v^v><>>><vvv^<>^vv<<^^<>^v>><<v><<^<<^
+vv<v>vv><><>>^^^>v><<>>><>^<^^^><v<vv^<<<><>><v^v^><>^<v^v^^v<<<v<v^<>>v><<<>>^<<^<v^<<<^>v<v^><<v^v<<^<<v><<^^^><v^>>>>^>>>>^><>v>><v<^^^>v>v>>v>><vv^vvvv>^^<>v><v^>v^^^^<<>vv<v><^>>>>^v>vv^>vvv^v<v>>>v<^^^>v>vvvv<<<vvv>^>^>><>v^<^^vv>^<v<^v><<><v^><<>v><<<><^v^^>><>>^^<v><><>^<<>>>^<>^<v>>^>><>^<<><vv^>^<v^v<><vv<^<<^v>^>><<>><^><<<>>v<>v^^>vvv<<^<>vv^>v<vv<>^><>^>^^v>^><><<v^<>v^v>v>^><><><^<v<^v>^^^>^v<^>^vv^^v<^><>>><^<<v<vv<v><^>>v><^v>>^>v>>v>>>vv><>v<^^v<<<^^<>^v><^<<v<<v<^^v><^^^^^>>vv^<<><>v<^<>vv<<>^^<>^>v<vv^^<^^^<v^>vv>^<<vv>v<v>>^^<>>>^vv^^^^^^><vvv>^><^^>v>^vv<<vv><><<>vv>v<v>^><><^>>v^>^>>v<v>vv<vv<^><v><<v<vv<v><><><v>^<>^<vv<^>^^v>^^^^^^v^>^<v<><^^^^<>><v>>>>>><<>>>>^<vv><<^>>>>>^>vv>^<<<<>v^><v>>>v^<vv^>vv^>>v>>v^^<><^<>v<^<v<<^<^><^><><><^^<^<><>^>v^<^>><>>>^^<vv<<vv>^^v<<vv^^vvvv^v^^<^v^v^^^^><v^<>^^v>vv<<^<>v<^>v><>^^^<<<^><<v>>v<<v<v><v^<v^vv^<vv<>^<^<>^>v>v<<^^^>>^^<>^<<^^<^^v^v^^v^^<^<<v>^<v>^^>^>^>v><^v^^^v>v^v>>v^>^>>v<>^<^v^^^^^<v>v<v^<^><^>>v^<^<<>^v^v^><<v

2024/day15/red-example

@@ -0,0 +1,9 @@
+#####
+#...#
+#.O.#
+#.O@#
+#OO.#
+#...#
+#####
+
+<>^<^<v

2024/day15/red-example1

@@ -0,0 +1,7 @@
+#######
+#.....#
+#.OO@.#
+#.....#
+#######
+
+<<

2024/day15/red-example2

@@ -0,0 +1,8 @@
+#######
+#.....#
+#.O#..#
+#..O@.#
+#.....#
+#######
+
+<v<<^

2024/day15/red-example3

@@ -0,0 +1,11 @@
+#######
+#.....#
+#.....#
+#.@O..#
+#..#O.#
+#...O.#
+#..O..#
+#.....#
+#######
+
+>><vvv>v>^^^

2024/day15/red-example4

@@ -0,0 +1,13 @@
+######
+#....#
+#....#
+#.O..#
+#.OO@#
+#.O..#
+#.O..#
+#.O..#
+#....#
+#....#
+######
+
+<^^<<vvv

2024/day15/red-example5

@@ -0,0 +1,11 @@
+########
+#......#
+#OO....#
+#.O....#
+#.O....#
+##O....#
+#O..O@.#
+#......#
+########
+
+<^^<<>^^^<v

2024/day16/challenge

@@ -0,0 +1,141 @@
+--- Day 16: Reindeer Maze ---
+
+It's time again for the Reindeer Olympics! This year, the big event is the Reindeer Maze, where the Reindeer compete for the lowest score.
+
+You and The Historians arrive to search for the Chief right as the event is about to start. It wouldn't hurt to watch a little, right?
+
+The Reindeer start on the Start Tile (marked S) facing East and need to reach the End Tile (marked E). They can move forward one tile at a time (increasing their score by 1 point), but never into a wall (#). They can also rotate clockwise or counterclockwise 90 degrees at a time (increasing their score by 1000 points).
+
+To figure out the best place to sit, you start by grabbing a map (your puzzle input) from a nearby kiosk. For example:
+
+###############
+#.......#....E#
+#.#.###.#.###.#
+#.....#.#...#.#
+#.###.#####.#.#
+#.#.#.......#.#
+#.#.#####.###.#
+#...........#.#
+###.#.#####.#.#
+#...#.....#.#.#
+#.#.#.###.#.#.#
+#.....#...#.#.#
+#.###.#.#.#.#.#
+#S..#.....#...#
+###############
+
+There are many paths through this maze, but taking any of the best paths would incur a score of only 7036. This can be achieved by taking a total of 36 steps forward and turning 90 degrees a total of 7 times:
+
+
+###############
+#.......#....E#
+#.#.###.#.###^#
+#.....#.#...#^#
+#.###.#####.#^#
+#.#.#.......#^#
+#.#.#####.###^#
+#..>>>>>>>>v#^#
+###^#.#####v#^#
+#>>^#.....#v#^#
+#^#.#.###.#v#^#
+#^....#...#v#^#
+#^###.#.#.#v#^#
+#S..#.....#>>^#
+###############
+
+Here's a second example:
+
+#################
+#...#...#...#..E#
+#.#.#.#.#.#.#.#.#
+#.#.#.#...#...#.#
+#.#.#.#.###.#.#.#
+#...#.#.#.....#.#
+#.#.#.#.#.#####.#
+#.#...#.#.#.....#
+#.#.#####.#.###.#
+#.#.#.......#...#
+#.#.###.#####.###
+#.#.#...#.....#.#
+#.#.#.#####.###.#
+#.#.#.........#.#
+#.#.#.#########.#
+#S#.............#
+#################
+
+In this maze, the best paths cost 11048 points; following one such path would look like this:
+
+#################
+#...#...#...#..E#
+#.#.#.#.#.#.#.#^#
+#.#.#.#...#...#^#
+#.#.#.#.###.#.#^#
+#>>v#.#.#.....#^#
+#^#v#.#.#.#####^#
+#^#v..#.#.#>>>>^#
+#^#v#####.#^###.#
+#^#v#..>>>>^#...#
+#^#v###^#####.###
+#^#v#>>^#.....#.#
+#^#v#^#####.###.#
+#^#v#^........#.#
+#^#v#^#########.#
+#S#>>^..........#
+#################
+
+Note that the path shown above includes one 90 degree turn as the very first move, rotating the Reindeer from facing East to facing North.
+
+Analyze your map carefully. What is the lowest score a Reindeer could possibly get?
+
+Your puzzle answer was 143564.
+--- Part Two ---
+
+Now that you know what the best paths look like, you can figure out the best spot to sit.
+
+Every non-wall tile (S, ., or E) is equipped with places to sit along the edges of the tile. While determining which of these tiles would be the best spot to sit depends on a whole bunch of factors (how comfortable the seats are, how far away the bathrooms are, whether there's a pillar blocking your view, etc.), the most important factor is whether the tile is on one of the best paths through the maze. If you sit somewhere else, you'd miss all the action!
+
+So, you'll need to determine which tiles are part of any best path through the maze, including the S and E tiles.
+
+In the first example, there are 45 tiles (marked O) that are part of at least one of the various best paths through the maze:
+
+###############
+#.......#....O#
+#.#.###.#.###O#
+#.....#.#...#O#
+#.###.#####.#O#
+#.#.#.......#O#
+#.#.#####.###O#
+#..OOOOOOOOO#O#
+###O#O#####O#O#
+#OOO#O....#O#O#
+#O#O#O###.#O#O#
+#OOOOO#...#O#O#
+#O###.#.#.#O#O#
+#O..#.....#OOO#
+###############
+
+In the second example, there are 64 tiles that are part of at least one of the best paths:
+
+#################
+#...#...#...#..O#
+#.#.#.#.#.#.#.#O#
+#.#.#.#...#...#O#
+#.#.#.#.###.#.#O#
+#OOO#.#.#.....#O#
+#O#O#.#.#.#####O#
+#O#O..#.#.#OOOOO#
+#O#O#####.#O###O#
+#O#O#..OOOOO#OOO#
+#O#O###O#####O###
+#O#O#OOO#..OOO#.#
+#O#O#O#####O###.#
+#O#O#OOOOOOO..#.#
+#O#O#O#########.#
+#O#OOO..........#
+#################
+
+Analyze your map further. How many tiles are part of at least one of the best paths through the maze?
+
+Your puzzle answer was 593.
+
+Both parts of this puzzle are complete! They provide two gold stars: **

2024/day16/code.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+
+import sys, math
+import numpy as np
+
+
+def dijkstra(graph, v, a):
+    Q = [n for n in graph.keys()]
+    lq = len(Q)
+    while len(Q) > 0:
+        u = min([u for u in Q], key=lambda x: a[x])
+        Q.remove(u)
+        for vo in graph[u]:
+            if vo in Q:
+                distance_update(graph, u,vo,a,v)
+    return v, a
+
+
+def distance_update(g, u, vo, a, v):
+    dist = 1 if vo[2] == u[2] else 1000
+    alt = a[u] + dist
+    # joining the sets does not work because we never remove the older nodes!
+    if alt <= a[vo]:
+        if alt < a[vo]:
+            v[vo] = set([])
+            a[vo] = alt
+        v[vo].add(u)
+        v[vo] = v[vo].union(set(v[u]))
+
+
+def count_set(edges, lab):
+    edg = set([])
+    for e in edges:
+        edg.add((e[0], e[1]))
+        lab[e[1]][e[0]] = 'O'
+    return edg
+
+
+if __name__ == '__main__':
+    lab = [list(line.strip('\n')) for line in open(sys.argv[1])]
+    rot90 = {(0,-1): [(-1,0),(1,0)], (1,0): [(0,-1),(0,1)], (0,1): [(1,0),(-1, 0)], (-1,0): [(0,1),(0,-1)]}
+
+    start = (1, len(lab)-2, (1,0))
+    end = (len(lab[0])-2, 1, (0,-1))
+    graph = {}
+    distance = {}
+    pred = {}
+    for y, l in enumerate(lab):
+        for x, f in enumerate(lab[y]):
+            if f == '#': continue
+            for d in [(0,1), (0,-1), (1,0), (-1,0)]:
+                distance[(x,y,d)] = math.inf
+                pred[(x,y,d)] = set([])
+                graph[(x,y,d)] = []
+                for d1 in rot90[d]:
+                    if not lab[y+d1[1]][x+d1[0]] == '#': graph[(x,y,d)].append((x,y,d1))
+                if lab[y+d[1]][x+d[0]] != '#':
+                    graph[(x,y,d)].append((x+d[0], y+d[1], d))
+    distance[start] = 0
+    v1, a1 = dijkstra(graph, pred, distance)
+    d1 = count_set(v1[end], lab)
+
+    # challenge 1
+    res1 = a1[end]
+    print(f"challenge 1:\n{res1}\n")
+
+    # challenge 2, needed some reddit help again...
+    d1.add((end[0],end[1]))
+    d1.add((start[0], start[1]))
+    res2 = len(d1)
+    print(f"challenge 2:\n{res2}")
+
+    for line in lab:
+      print(''.join(line))
+

2024/day16/example

@@ -0,0 +1,15 @@
+###############
+#.......#....E#
+#.#.###.#.###.#
+#.....#.#...#.#
+#.###.#####.#.#
+#.#.#.......#.#
+#.#.#####.###.#
+#...........#.#
+###.#.#####.#.#
+#...#.....#.#.#
+#.#.#.###.#.#.#
+#.....#...#.#.#
+#.###.#.#.#.#.#
+#S..#.....#...#
+###############

2024/day16/example2

@@ -0,0 +1,17 @@
+#################
+#...#...#...#..E#
+#.#.#.#.#.#.#.#.#
+#.#.#.#...#...#.#
+#.#.#.#.###.#.#.#
+#...#.#.#.....#.#
+#.#.#.#.#.#####.#
+#.#...#.#.#.....#
+#.#.#####.#.###.#
+#.#.#.......#...#
+#.#.###.#####.###
+#.#.#...#.....#.#
+#.#.#.#####.###.#
+#.#.#.........#.#
+#.#.#.#########.#
+#S#.............#
+#################