import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.Set;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		for(int i = 0; i < 10; i++){
			for(int j = 0; j < 10; j++){
				for(int k = 0; k < 10; k++){
					System.out.println(i + "" + j + "" + k);
					
					if(sc.next().equals("unlocked")){
						return;
					}
				}
			}
		}
		
	}

}