fn main() {
    let mut xy = String::new();
    std::io::stdin().read_line(&mut xy).ok();
    let xy: Vec<isize> = xy.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let x = xy[0];
    let y = xy[1];

    println!("{}", (((x*x + y*y) as f64).sqrt() * 2.0 + 0.00000001).ceil() as usize);
}