#include <bits/stdc++.h>
using namespace std;
void solve() {
  int64_t a;
  string s;
  cin >> a >> s;
  cout << (a >= 3200 ? "red" : s) << "\n";
}
signed main() {
  int64_t T = 1;
  while (T--) solve();
  return 0;
}
