#include <iostream>
using namespace std;

int main(void){
  for(int i = 0; i <= 9; i++){
    for(int j = 0; j <= 9; j++){
      for(int k = 0; k <= 9; k++){
        string str = "";
        str += i + '0';
        str += j + '0';
        str += k + '0';
        cout << str << endl;
        string result;
        cin >> result;
        if(result == "unlocked"){
          goto END;
        }
      }
    }
  }
END:
  return 0;
}