import java.util.Scanner;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;

public class Main {
    public static void main(String[] args) {
        Scanner in = 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(in.next().equals("unlocked")) {
                        return;
                    }
                }
            }
        }

        in.close();
    }
}