26 lines
634 B
Python
26 lines
634 B
Python
# -*- encoding: utf-8 -*-
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import string
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import sys
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lines = [line.strip() for line in sys.stdin.readlines()]
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# extract content of each part
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parts = [(set(line[: len(line) // 2]), set(line[len(line) // 2 :])) for line in lines]
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# priorities
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priorities = {c: i + 1 for i, c in enumerate(string.ascii_letters)}
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# part 1
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part1 = sum(priorities[c] for p1, p2 in parts for c in p1.intersection(p2))
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print(f"score 1 is {part1}")
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# part 2
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n_per_group = 3
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part2 = sum(
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priorities[c]
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for i in range(0, len(lines), n_per_group)
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for c in set(lines[i]).intersection(*lines[i + 1 : i + n_per_group])
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)
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print(f"score 2 is {part2}")
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