#include <iostream>
using namespace std;
int main(){
	bool unlocked = false;
	for (int i = 0; i <= 9; i++){
		for (int j = 0; j <= 9; j++){
			for (int k = 0; k <= 9; k++){
				if (!unlocked){
					cout << i << j << k << endl;
					string S;
					cin >> S;
					if (S == "unlocked"){
						unlocked = true;
					}
				}
			}
		}
	}
}