#include <bits/stdc++.h>
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 s;
        cin >> s;
        if(s == "unlocked"){
            break;
        }
    }
}