#include <bits/stdc++.h>
#pragma GCC optimize("Ofast", 3, "inline")
using namespace std;
long long n;
string s;
int main() {
  ios_base::sync_with_stdio(false);
  cin >> n >> s;
  if (n < 3200)
    cout << "red";
  else
    cout << s;
  return 0;
}
