#include <bits/stdc++.h>
using namespace std;
long long int MOD = 1000000007;
long long int INFL = 1ll << 60;
long long int INF = 1 << 28;
int main() {
  int a;
  cin >> a;
  string s;
  cin >> s;
  if (a < 3200)
    cout << s << endl;
  else
    cout << "red" << endl;
}
