[백준] 30455번 이제는 더 이상 물러날 곳이 없다 (bronze 1

import java.util.*;
import java.io.*;

public class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(System.out));
        int n=Integer.valueOf(br.readLine());
        bw.write(n%2==1 ? "Goose" : "Duck");
        bw.flush();
    }
}