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#!/usr/bin/env python3
import sys, re, functools
encr=filter(lambda t:"".join(x[1] for x in sorted([(len(p[0]),p[1]) for p in re.findall(r"((.)\2*)","".join(sorted(t[0].replace("-",""))))],key=lambda t:(-t[0],t[1]))[:5])==t[2],[re.match(r"([-a-z]+)-(\d+)\[([a-z]+)\]",r).groups() for r in sys.stdin.read().split("\n")[:-1]])
decr=[("".join(" " if c=="-" else "".join(chr(x) for x in range(97,123))[(ord(c)-97+int(r[1]))%26] for c in r[0]),r[1]) for r in encr]
found=next(r for r in decr if r[0].find("northpole")!=-1)[1]
print(found)
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