#include <iostream> 
using namespace std;
 
int main(){
    for(int i = 0; i < 1000; i++){
        if(i < 10){
            cout << "00" << i << endl;
        }else if(i < 100){
            cout << "0" << i << endl;
        }else{
            cout << i << endl;
        }
        string if_locked;
        cin >> if_locked;
        if(if_locked == "unlocked"){
            return 0;
        }
    }
}