#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using VI = vector<int>;
using VVI = vector<vector<int>>;
int main() {
  int n;
  string s;
  cin >> n >> s;
  if (n >= 3200)
    cout << "red";
  else
    cout << s;
  return 0;
}
