using System;

public class Hello
{
    static void Main()
    {
        var t = "kyoprotenkei90";
        var s = Console.ReadLine().Trim();
        Console.WriteLine(sort(s) == sort(t) ? "Yes" : "No");
    }
    static string sort(string s)
    {
        var a = s.ToCharArray();
        Array.Sort(a);
        return new string(a);
    }
}