#include <bits/stdc++.h>
using namespace std;
const int maxn = 100020;
const int maxm = 1000020;
const int MOd = 998244353;
int main() {
  int a;
  string s;
  scanf("%d", &a);
  cin >> s;
  if (a <= 3200)
    cout << s << endl;
  else
    cout << "red" << endl;
  return 0;
}
