fn main() {
    use std::io;
    let mut buf = String::new();
    io::stdin().read_line(&mut buf).expect("?");
    let st = buf.split_whitespace()
                .map(|x| x.parse())
                .collect::<Result<Vec<i32>,_>>()
                .unwrap();
    let (s, t) = (st[0], st[1]);
    println!("{}", if s < t {"Yes"} else {"No"});
}