#include <iostream>
#include <string>
#include <vector>
using namespace std;

int main()
{
	string s;cin >> s;
	string yuki = "yukicoder";

	for (int i = 0;i < s.size();i++) {
		if (s[i] == '?')cout << yuki[i]<< endl;
	}

    return 0;
}