#include <bits/stdc++.h>
using namespace std;
const long long mod = 1000000007;
const long long nmax = 2525 * 1001;
long long n, k;
vector<long long> v;
long long mx;
int32_t main() {
  ios_base ::sync_with_stdio(0);
  cin.tie();
  cout.tie();
  long long a;
  string s;
  if (a < 3200)
    cout << "red";
  else
    cout << s;
}
