#include <bits/stdc++.h>

using namespace std;

struct Initializer {
  Initializer() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    cout << fixed << setprecision(15);
  }
} initializer;

int main() {
  string r;
  for (int i = 0; r != "unlocked"; ++i) {
    cout << setw(3) << setfill('0') << i << endl;
    cin >> r;
  }
}