#include <bits/stdc++.h>
using namespace std;
const long long INF = 999999999;
const long long mod = 1000000007;
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  int A;
  cin >> A;
  string S;
  cin >> S;
  cout << ((A >= 3200) ? "red" : S) << endl;
}
