Created
December 18, 2017 23:41
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from collections import defaultdict | |
def read_input(): | |
with open('input.txt', 'r') as f: | |
return f.read().strip() | |
def get(reg, v): | |
try: | |
return int(v) | |
except ValueError: | |
return int(reg[v]) | |
queue = [[] for _ in range(2)] | |
def run(seq, program): | |
instructions = seq.split('\n') | |
registers = defaultdict(int) | |
registers['p'] = program | |
index = 0 | |
snds = 0 | |
while True: | |
try: | |
cmd = instructions[index].split() | |
if cmd[0] == 'snd': | |
queue[1 - registers['p']].append(get(registers, cmd[1])) | |
snds += 1 | |
yield snds | |
if cmd[0] == 'set': | |
registers[cmd[1]] = get(registers, cmd[2]) | |
if cmd[0] == 'add': | |
registers[cmd[1]] += get(registers, cmd[2]) | |
if cmd[0] == 'mul': | |
registers[cmd[1]] *= get(registers, cmd[2]) | |
if cmd[0] == 'mod': | |
registers[cmd[1]] %= get(registers, cmd[2]) | |
if cmd[0] == 'rcv': # and registers[cmd[1]] != 0: | |
registers[cmd[1]] = queue[registers['p']].pop(0) | |
yield snds | |
if cmd[0] == 'jgz' and registers[cmd[1]] > 0: | |
index += get(registers, cmd[2]) | |
else: | |
index += 1 | |
except: | |
return | |
def run_it_part2(seq): | |
p_zero = run(seq, 0) | |
p_one = run(seq, 1) | |
value = None | |
while True: | |
try: | |
next(p_zero) | |
value = next(p_one) | |
except StopIteration: | |
break | |
print(value) | |
if __name__ == '__main__': | |
seq = read_input() | |
run_it_part2(seq) |
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