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36 lines
1.0 KiB
36 lines
1.0 KiB
#!/usr/bin/env python3
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import sys
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if __name__ == '__main__':
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lines = open(sys.argv[1]).readlines()
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for i, line in enumerate(lines):
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lines[i] = list(line[:-1])
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for line in lines:
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for j, b in enumerate(line):
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if b == 'n' or b == 's':
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line[j] = line[j] + line.pop(j+1)
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for a, line in enumerate(lines):
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for i in range(len(line)):
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for j in range(i+1, len(line)):
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x, y = line[i], line[j]
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if (x == 'e' and y == 'w') or (x == 'w' and y == 'e') or (x == 'se' and y == 'sw') or (x == 'sw' and y == 'se') or (x == 'ne' and y == 'nw') or (x == 'nw' and y == 'ne'):
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line[j] = ''
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line[i] = ''
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line.sort()
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lines[a] = ''.join(line)
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dict = {}
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for di in lines:
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if di in dict:
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dict[di] += 1
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else:
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dict[di] = 1
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count = 0
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for a in dict.values():
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if a % 2 == 1:
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count += 1
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print(count)
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