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

    if s.len() >= 10 {
        println!("No");
        return;
    }
    let target = "kadomatsu".chars().collect::<Vec<_>>();
    let mut idx = 0usize;
    for &c in s.iter() {
        if let Some(i) = (idx..target.len()).filter(|&i| target[i] == c).nth(0) {
            idx = i+1;
        } else {
            println!("No");
            return;
        }
    }
    println!("Yes");
}