#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  for (int i = 0; i < 1000; ++i) {
    string s = to_string(i);
    while (s.size() < 3) s = "0" + s;
    cout << s << endl;
    string t;
    cin >> t;
    if (t == "unlocked") break;
  }
  return 0;
}