import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        int i=0;
        while(true){
			System.out.println(String.format("%03d",i));
			if( "unlocked".equals(sc.next()) ){
			    break;
			}
			i++;
        }
    }
}