using System.Collections.Generic;
using System;

public class Hello
{
    public static string t = "kadomatsu";
    static void Main()
    {
        var s = Console.ReadLine().Trim();
        Console.WriteLine(getAns(s) ? "Yes" : "No");
    }
    static bool getAns(string s)
    {
        var sL = s.Length;
        if (sL == 10) return false;
        if (sL == 9) return s == t;
        var test = new List<int>();
        var p = 0;
        for (int i = 0; i < sL; i++)
        {
            var w = t.IndexOf(s[i].ToString(), p);
            if (w == -1) return false;
            test.Add(w);
            p = w + 1;
        }
        return true;
    }
}