import java.util.Scanner;

public class No_304 {
public static void main(String[] args) {
	String[] Num = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
	Scanner sc = new Scanner(System.in);
	String s;
	flag: for(int i = 0; i < Num.length; i++){
				for(int j = 0; j < Num.length; j++){
					for(int k = 0; k < Num.length; k++){
						System.out.println(Num[i] + Num[j] + Num[k]);
						if((s = sc.nextLine()).equals("unlocked")){
					break flag;
				}
			}
		}
	}
}
}