fn main(){
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let mut h: usize = itr.next().unwrap().parse().unwrap();
    let mut m: usize = itr.next().unwrap().parse().unwrap();

    let x = h * 60 + m;
    println!("{}",
        if x < 450 { "Yes" }
        else if x < 510 { "Late" }
        else { "No" }
    );
}