#!/usr/bin/env python3

import sys, re, math
from operator import add, mul, truediv, mod
from functools import reduce

def parse(line):
    l = line.split(' ')
    if l[0] == 'inp': i,o = l
    else: i,o = l[0], [l[1],l[2]]
    return (i,o)

def replist(l,v,r):
    return [r if i == v else i for i in l]

def eql(a,b):
    return int(a == b)

def div(a,b):
    return math.trunc(reduce(truediv,[a,b]))

def alu(instruction, inp):
    reg = {'w': 0, 'x': 0, 'y': 0, 'z': 0}
    inp = list(str(inp))
    index = 0
    for i,ops in instruction:
        if i == 'inp':
            reg[ops] = inp[index]
            index += 1
        else:
            reg[ops[0]] = reduce(eval(i),[int(reg[o]) if o in 'wxyz' else int(o) for o in ops])

    return reg

if __name__ == '__main__':
    instr = [parse(line.strip('\n')) for line in open(sys.argv[1])]

    for i in range(1,9):
        for k in range(11111111111,99999999999):
            for j in ['18','27']:
                r = alu(instr,str(i)+j+str(k))
                print(str(i)+j+str(k),r)
                if r['z'] == 0: print(i,j,k)

    for i in range(99999999999999,9999999999999,-1):
        if i % 10000 == 0: print(i)
        if '0' in str(i): continue
        r = alu(instr,str(i))
        if r['z'] == 0:
            print(i)
            break

    # challenge 1
    res1 = ""
    print("challenge 1:" + "\n" +  res1 + "\n")

    # challenge 2
    res2 = ""
    print("challenge 2:" + "\n" +  res2 + "\n")