advent-of-code/2023/d01/ex2/ex2.py

40 lines
994 B
Python
Executable file

#!/usr/bin/env python
import sys
def solve(input: list[str]) -> int:
def extract_digits(line: str) -> list[int]:
# Just do a search and replace to simplify our lives
digits = {
"one": 1,
"two": 2,
"three": 3,
"four": 4,
"five": 5,
"six": 6,
"seven": 7,
"eight": 8,
"nine": 9,
}
# The solution expects "sevenine" to translate to 79, so keep first/last character
# as a work-around.
for word, value in digits.items():
line = line.replace(word, word[0] + str(value) + word[-1])
return [int(c) for c in line if c.isdigit()]
def value(line: str) -> int:
digits = extract_digits(line)
return digits[0] * 10 + digits[-1]
return sum(value(line) for line in input)
def main() -> None:
input = sys.stdin.read().splitlines()
print(solve(input))
if __name__ == "__main__":
main()