#include <bits/stdc++.h>
using namespace std;
string s;

int main(void) {
  for(int i=0;i<=999;i++){
    if(i<10){
      cout<<"00";
      cout<<i;
      cout<<endl;
    }
    else if(i<100){
      cout<<"0";
      cout<<i;
      cout<<endl;
    }
    else{
      cout<<i<<endl;
    }
    cin>>s;
    if(s=="unlocked") return 0;
    else continue;
  }
  return 0;
}