import java.util.Scanner;

class Main{
	static Scanner s=new Scanner(System.in);
	static int gInt(){return Integer.parseInt(s.next());}

	public static void main(String[]$){
		for(int i=0;i<1000;++i) {
			System.out.printf("%03d",i);
			System.out.println();
			if(!s.next().equals("locked"))
				return;
		}
	}
}