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