using System;
using System.Collections.Generic;
using System.Linq;

// https://yukicoder.me/problems/no/1591
class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("");
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("");
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("");
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();
        string S = InputList[0];

        char[] Arr1 = "kyoprotenkei90".ToCharArray().OrderBy(pX => pX).ToArray();
        char[] Arr2 = S.ToCharArray().OrderBy(pX => pX).ToArray();
        if (Arr1.SequenceEqual(Arr2)) {
            Console.WriteLine("Yes");
        }
        else {
            Console.WriteLine("No");
        }
    }
}