34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
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#!/usr/bin/env python3.12
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from typing import Iterable
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def first_digit(s: str):
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for idx, c in enumerate(s):
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if "0" <= c <= "9":
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return idx, int(c)
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def first_word(s: str, words: list[str]):
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indexes = [(s.find(w), w) for w in words]
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try:
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midx = min([idx for idx in indexes if idx[0] != -1])
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return midx[0], words.index(midx[1]) + 1
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except ValueError:
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return None
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def not_null[T](i: Iterable[T | None]):
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return [a for a in i if a is not None]
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digits = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
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rdigits = [d[::-1] for d in digits]
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if __name__ == "__main__":
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with open("input.txt") as f:
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lines = [l for l in f.read().split("\n") if l != ""]
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print("Part 1:", sum([
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first_digit(line)[1] * 10 + first_digit(line[::-1])[1]
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for line in lines
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]))
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print("Part 2:", sum([
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min(not_null([first_digit(line), first_word(line, digits)]))[1] * 10 +
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min(not_null([first_digit(rline := line[::-1]), first_word(rline, rdigits)]))[1]
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for line in lines
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]))
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