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08.py
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08.py
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import fileinput
lines = [line.replace('\n', '') for line in fileinput.input()]
def run(instructions, return_acc_on_cycle):
acc = 0
idx = 0
idx_used = set()
while True:
if idx >= len(instructions):
return acc
if idx in idx_used:
return acc if return_acc_on_cycle else None
idx_used.add(idx)
instruction, value = instructions[idx].split(' ')
if instruction == 'nop':
idx += 1
elif instruction == 'acc':
acc += int(value)
idx += 1
elif instruction == 'jmp':
idx += int(value)
def part1():
return run(lines, True)
def part2():
for i in range(len(lines)):
instructions = [*lines]
instruction, value = instructions[i].split(' ')
if instruction == 'acc':
continue
if instruction == 'jmp' and int(value) == 0:
continue
if instruction == 'nop':
instructions[i] = 'jmp ' + value
elif instruction == 'jmp':
instructions[i] = 'nop ' + value
result = run(instructions, False)
if result is not None:
return result
print(part1())
print(part2())