#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main(int argc, char* argv[]){
    for(int i=0;i<1000;i++){
        std::string S = std::to_string(i);

        while(S.size() < 3){
            S = '0' + S;
        }

        std::cout << S << std::endl;
        std::string T;
        std::cin >> T;

        if(T == "unlocked"){break;}
    }
}