#include <bits/stdc++.h>
using namespace std;
const long long INF = 1e18 + 5;
const long long mod = 1e9 + 7;
const long long N = 2e5 + 314;
const long double pi = 3.1415926535897932384626433832795;
void solve() {
  long long a;
  string second;
  cin >> a >> second;
  if (a > 3200)
    cout << second;
  else
    cout << "red";
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  long long t = 1;
  while (t--) solve();
}
