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path: root/src/day11pt2.rs
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pub fn main() {
    let txt = std::fs::read_to_string("./input/day11.txt").unwrap();
    let input = txt
        .lines()
        .map(|s| s.chars().collect::<Vec<char>>())
        .collect::<Vec<_>>();

    let mut coords = vec![];

    let mut off_y = 0;
    for i in 0..input.len() {
        if !input[i].contains(&'#') {
            off_y += 1000000 - 1;
            continue;
        }

        let mut off_x = 0;
        for j in 0..input[i].len() {
            if !input
                .clone()
                .into_iter()
                .map(|s| s[j])
                .collect::<Vec<char>>()
                .contains(&'#')
            {
                off_x += 1000000 - 1;
                continue;
            }

            if input[i][j] == '#' {
                coords.push(((j + off_x) as isize, (i + off_y) as isize));
            }
        }
    }

    let mut sum: u64 = 0;
    for coord1 in &coords {
        for coord2 in &coords {
            if coord1 != coord2 {
                sum += ((coord1.0 - coord2.0).abs() + (coord1.1 - coord2.1).abs()) as u64;
            }
        }
    }
    println!("{}", sum / 2);
}