#!/usr/bin/env python
import re

from common import parse


def solve(input: str) -> int:
    regex = r"mul\((\d+),(\d+)\)"
    muls = re.findall(regex, input)
    return sum(map(lambda x: int(x[0]) * int(x[1]), muls))


def main():
    print(solve(parse("input")))


if __name__ == "__main__":
    main()