#include <bits/stdc++.h>
constexpr long long INFL = 1LL << 60;
constexpr int INF = 1 << 30;
using namespace std;
using ll = long long;
using P = tuple<int, int>;
using iarr = valarray<int>;
int main() {
  int a;
  string s;
  cin >> a >> s;
  if (a <= 3200)
    cout << s << endl;
  else
    cout << "red" << endl;
  return 0;
}
