fn main() {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let mut s: Vec<char> = s.trim().chars().collect();

    let mut target: Vec<char> = "kyoprotenkei90".chars().collect();
    target.sort_unstable();

    s.sort_unstable();

    if s == target {
        println!("Yes");
    } else {
        println!("No");
    }
}