#include <bits/stdc++.h>
using namespace std;
const int N = 1000300;
const long long mod = 1e9 + 7;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  long long a;
  cin >> a;
  string s;
  cin >> s;
  if (a >= 32)
    cout << s;
  else
    cout << "red";
}
