#[path = "../lib.rs"]
mod lib;

fn main() {
    let mut width = 0;
    let mut height = 0;
    let mut cols = vec![];
    let mut sum = 0;
    let mut count = 0;

    for (y, line) in lib::iter_input().enumerate() {
        height = y;
        if width == 0 {
            width = line.len();
            cols = vec![0; width];
        }

        for (x, b) in line.bytes().enumerate() {
            match b {
                b'#' => { cols[x] = y + 1 },
                b'O' => {
                    sum += cols[x];
                    cols[x] += 1;
                    count += 1;
                },
                b'.' => {},
                _ => unreachable!(),
            }
        }
    }

    println!("part1: {}", count * (height + 1) - sum);
}