#include <bits/stdc++.h>
const int INF = 1e9;
const int MOD = 1e9 + 7;
const long long LINF = 1e18;
using namespace std;
signed main() {
  long long a;
  string s;
  cin >> a >> s;
  if (a >= 3200)
    cout << "red" << endl;
  else
    cout << s << endl;
}
