#include <bits/stdc++.h>

using namespace std;

string f(int a) {
  string res = "";
  while (a) {
    res += (a % 10 + '0');
    a /= 10;
  }
  while (res.size() < 3) res = "0" + res;
  return res;
}

int main(void) {
  for (int i = 0; i < 1000; i++) {
    string s = f(i);
    cout << s << endl;
    flush(cout);
    cin >> s;
    if (s == "unlocked") break;
  }

  return 0;
}