advent-of-code/2024/python/day03.py

import shared
import re
from scanf import scanf

# @shared.profile
def part1(rows):
    total = 0
    r = re.compile(r'mul\(\d+,\d+\)')
    for row in rows:
        muls = r.findall(row)
        for m in muls:
            x, y = scanf("mul(%d,%d)", m)
            total += x * y
    print(total)



# @shared.profile
def part2(rows):
    total = 0
    r = re.compile(r'(mul\(\d+,\d+\)|do\(\)|don\'t\(\))')
    enabled = True
    for row in rows:
        muls = r.findall(row)
        for m in muls:
            if m == "don't()":
                enabled = False
                continue
            if m == "do()":
                enabled = True
                continue
            if enabled:
                x, y = scanf("mul(%d,%d)", m)
                total += x * y
    print(total)


def main():
    rows = [row for row in shared.load_rows(3)]
    with shared.elapsed_timer() as elapsed:
        part1(rows)
        print("🕒", elapsed())

    rows = [row for row in shared.load_rows(3, True)]
    with shared.elapsed_timer() as elapsed:
        part2(rows)
        print("🕒", elapsed())


if __name__ == "__main__":
    main()