#include <bits/stdc++.h>
using namespace std;
int main() {
  char s[12];
  int a = 0;
  cin >> a;
  cin >> s;
  if (a == 3200)
    cout << s << endl;
  else if (a < 3200)
    cout << "red" << endl;
  else
    cout << "red" << endl;
}
