fn main() {
    let n = input_char_vec();

    for c in n {
        if c != '9' {
            println!("No");
            return;
        }
    }

    println!("Yes");
}

fn input_char_vec() -> Vec<char> {
    let stdin = std::io::stdin();

    let mut buf = String::new();
    stdin.read_line(&mut buf).unwrap();
    buf = buf.trim_end().to_owned();

    let x = buf.chars().collect();

    x
}