#include <bits/stdc++.h>
using namespace std;
void solve() {
  int a;
  cin >> a;
  string s;
  cin >> s;
  if (a < 3200)
    cout << 'red';
  else
    cout << s;
}
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long int t = 1;
  for (int i = 1; i <= t; i++) {
    solve();
  }
}
