65 lines
1.5 KiB
Python
Executable File
65 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python3
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from functools import reduce
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import numpy as np
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import re, sys
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import sys
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def lst(l): # get nice mutable tuple from line
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ins, num = l.split() # space separated fields
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num = int(num) if num[0] == '-' else int(num[1:])
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return [ins, num]
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def nxt(acc, ip, ins, num, size):
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size += 1 # NO LOOP AROUND THIS TIME
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if ins == 'nop':
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return acc, (ip + 1) % size
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elif ins == 'acc':
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return acc + num, (ip + 1) % size
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elif ins == 'jmp':
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return acc, (ip + num) % size
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else:
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return 'fish'
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def repmachine(lines):
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acc = ip = prev = 0
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done = [False for i in range(len(lines))]
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while True:
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if done[ip]:
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return prev
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done[ip] = True
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prev = acc
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acc, ip = nxt(acc, ip, *lines[ip], len(lines))
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def machine(lines):
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acc = ip = 0
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done = [False for i in range(len(lines))]
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while True:
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if ip == len(lines):
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return acc
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if done[ip]:
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return None
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done[ip] = True
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acc, ip = nxt(acc, ip, *lines[ip], len(lines))
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def fix(ins):
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if ins == 'jmp':
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return 'nop'
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if ins == 'nop':
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return 'jmp'
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return ins
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fn = sys.argv[1] if len(sys.argv) > 1 else 'input8'
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with open(fn) as f:
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lines = [lst(l.strip()) for l in f.readlines()]
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print(repmachine(lines))
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for i, l in enumerate(lines):
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svi = l[0]
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l[0] = fix(l[0])
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if machine(lines):
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print(machine(lines))
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exit()
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l[0] = svi
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