fn main() {
    let mut ab = String::new();
    std::io::stdin().read_line(&mut ab).ok();
    let ab: Vec<usize> = ab.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let a = ab[0];
    let b = ab[1];
    let mut result: usize = 0;
    for i in 1..=1000 {
        let mut flg = false;
        for j in 0..=i {
            let left = 100.0*(j as f64) / (i as f64);
            let left: usize = left.round() as usize;
            let right = 100.0*((i-j) as f64) / (i as f64);
            let right: usize = right.round() as usize;
            if left == a && right == b {
                flg = true;
                break;
            }
        }
        if flg {
            result = i;
            break;
        }
    }
    println!("{}", result);
}