#include <bits/stdc++.h>
using namespace std;
const int INF = 1000000000;
const long INF64 = 1000000000000000ll;
const int MOD = 1000000007;
int main() {
  int a;
  string s;
  std::cin >> a >> s;
  if (a >= 3200)
    std::cout << "red" << std::endl;
  else
    std::cout << s << std::endl;
}
