#include <bits/stdc++.h>
using namespace std;
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  long long a;
  string s;
  cin >> a >> s;
  if (a < 3200)
    cout << s << "\n";
  else
    cout << "red"
         << "\n";
  return 0;
}
