#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  REP (i, 10) REP (j, 10) REP (k, 10) {
    cout << i << j << k << endl;
    string s;
    cin >> s;
    if (s == "unlocked")
      return 0;
  }
  
  return 0;
}