#include <iostream>
#include <iomanip>
using namespace std;
#define anyfill(n,s) setw(n) << setfill(s)
int main(){
  cout << "000" << endl;
  int n = 0;
  while(true){
    string s;cin>>s;
    if(s == "unlocked"){
      return 0;
    }
    n++;
    cout << anyfill(3,'0') << n << endl;
  }
}