use advent_of_code_2024::{make_main, SResult};
use regex::Regex;

make_main!();

fn solve(lines: Vec<String>) -> SResult<usize> {
    let mut result = 0;
    let re = Regex::new(r"mul\((?<mul1>\d{1,3}),(?<mul2>\d{1,3})\)")?;
    for line in lines {
        for caps in re.captures_iter(&line) {
            result += caps["mul1"].parse::<usize>().unwrap() * caps["mul2"].parse::<usize>().unwrap();
        }
    }
    Ok(result)
}


#[cfg(test)]
mod tests {
    use advent_of_code_2024::input;

    use super::*;
    #[test]
    fn sample_input() {
        let strings: Vec<String> = input!("d3p1.txt");
        let got = solve(strings).unwrap();
        assert_eq!(got, 161);
    }
}