#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

string a;
int main() {
  char s[20];
  for (int i = 0; i <= 999; i++) {
    sprintf(s, "%03d", i);
    cout << s << endl;
    cin >> a;
    if (a == "unlocked") break;
  }
  return 0;
}