#include <bits/stdc++.h>
using namespace std;
void solve() {
  long long n;
  cin >> n;
  string s;
  cin >> s;
  if (n < 3200)
    cout << "red\n";
  else
    cout << s << "\n";
}
int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  cout << setprecision(15) << fixed;
  long long t = 1;
  for (long long i = 1; i <= t; i++) {
    solve();
  }
  return 0;
}
