#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++)

void solve() {
    string s = "kyoprotenkei90";
    string t;
    cin >> t;
    sort(s.begin(), s.end());
    sort(t.begin(), t.end());
    cerr << s << " " << t << endl; 
    cout << (s == t ? "Yes" : "No") << endl;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
    return 0;
}