fn main() {
    let s = read::<String>().chars().collect::<Vec<_>>();
    let kadomatsu = "kadomatsu".chars().collect::<Vec<_>>();
    let mut i = 0;
    for j in 0..s.len() {
        if i >= kadomatsu.len() {
            println!("No");
            return;
        }
        while kadomatsu[i] != s[j] {
            i += 1;
            if i >= kadomatsu.len() {
                println!("No");
                return;
            }
        }
        i += 1;
    }
    println!("Yes");
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}