import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class No00000494_Main {
	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	public static void main(String[] args) throws IOException {
		String[] y = {"y", "u", "k", "i", "c", "o", "d", "e", "r"};
		System.out.println(y[br.readLine().indexOf("?")]);
	}
}