#include <bits/stdc++.h>
using namespace std;
const int N = 2 * 100 * 1000 + 19;
int32_t main() {
  ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
  int n;
  string s;
  cin >> n;
  cin >> s;
  if (n <= 3200)
    cout << s;
  else
    cout << "red";
  return 0;
}
