#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

string S, S1 = "kyoprotenkei90";
int ab1[26], ab2[26], num1[10], num2[10];

int main() {
  cin >> S;
  for (int i = 0; i < S1.size(); i++) {
    if ('a' <= S1[i] && S1[i] <= 'z') ab1[S1[i] - 'a']++;
    if ('0' <= S1[i] && S1[i] <= '9') num1[S1[i] - '0']++;
  }
  for (int i = 0; i < S.size(); i++) {
    if ('a' <= S[i] && S[i] <= 'z') ab2[S[i] - 'a']++;
    if ('0' <= S[i] && S[i] <= '9') num2[S[i] - '0']++;
  }
  for (int i = 0; i < 26; i++) if (ab1[i] != ab2[i]) {
    cout << "No" << endl;
    return 0;
  }
  for (int i = 0; i < 10; i++) if (num1[i] != num2[i]) {
    cout << "No" << endl;
    return 0;
  }
  cout << "Yes" << endl;
  return 0;
}