#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int T = 1;
  while (T--) {
    int n;
    string s;
    cin >> n >> s;
    if (n > 3200)
      cout << s;
    else
      cout << "red";
  }
}
