fn read() -> usize {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).unwrap();
    let v = s.trim().parse::<usize>().unwrap();
    assert!(100 <= v && v <= 599);
    v
}

fn main() {
    let s = read();
    let d = s / 100;
    if d == 4 || d == 5 {
        println!("Yes");
    } else {
        println!("No");
    }
}