fn main() {
    let mut input = String::new();
    std::io::stdin().read_line(&mut input).ok();
    let input: Vec<f64> = input
        .split_whitespace()
        .map(|n| n.parse().unwrap())
        .collect();

    let diameter = 2. * input[0].hypot(input[1]);

    if diameter.fract() == 0. {
        println!("{}", diameter.ceil() + 1.);
    } else {
        println!("{}", diameter.ceil());
    }
}