package m.shin;
import java.util.Scanner;
public class Con304 {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		for(int i = 0;i < 1000;i++){
			String ans = "000";
			int l = Integer.toString(i).length();
			ans = ans.substring(0, 3-l) + Integer.toString(i);
			System.out.println(ans);
			if(s.nextLine().equals("unlocked")){
				break;
			}
		}
		s.close();

	}

}