9 lines
261 B
Python
9 lines
261 B
Python
#!/usr/bin/env python3
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import re
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lines = (x.strip() for x in open("input.txt"))
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for line in lines:
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regex = r"(\w)" + "".join("(?!" + "|".join("\\{0}".format(j) for j in range(1, i+2)) + r")(\w)" for i in range(13))
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print(re.search(regex, line).end())
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