package no303;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		for(int i=0;i<1000;i++) {
			System.out.printf("%03d\n",i);
			if (sc.next().equals("unlocked")) {
				return;
			}
		}
	}

}