#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
int main()
{
	vector<char> V1(14),V2(14);
	string S1 = "kyoprotenkei90";
	for (int i = 0; i < S1.size(); i++) {
		V1.push_back(S1[i]);
	}
	string S2;
	cin >> S2;
	if (S1.size() != S2.size()) {
		cout << "No" << endl;
		return 0;
	}
	for (int i = 0; i < S2.size(); i++) {
		V2.push_back(S2[i]);
	}
	sort(V1.begin(), V1.end());
	sort(V2.begin(), V2.end());
	for (int i = 0; i < V1.size(); i++) {
		if (V1[i] != V2[i]) {
			cout << "No" << endl;
			return 0;
		}
	}
	cout << "Yes" << endl;
	return 0;
}