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from itertools import permutations
import os
import subprocess
perm = permutations(range(5))
res = []
for seq in perm:
signal = 0
for phase in seq:
out = subprocess.run(
["perl", "intcode.pl", "part1.in"],
capture_output=True,
input=b"%d\n%d" % (phase, signal),
)
signal = int(out.stdout)
res.append(signal)
print(sorted(res)[-1])
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