#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pli = pair<ll, int>;
const int INF = 0x3f3f3f3f, N = 2e5 + 5;
const ll LINF = 1e18 + 5;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int a;
  string s;
  cin >> a >> s;
  if (a <= 3200)
    cout << s;
  else
    cout << "red";
  return 0;
}
