#include <iostream>
#include <string>
using namespace std;

int main(){
   string input;
   for(int i = 0;i < 1000;i++){
      if(10 <= i && i < 100) cout << "0";
      else if(i < 10) cout << "00";
      cout << i << endl;
      if(cin >> input == "unlocked") break;
   }
}