#include <bits/stdc++.h>
using namespace std;
const bool DEBUG = true;
using ll = long long;
using ii = pair<int, int>;
using vi = vector<int>;
const double PI = acos(-1);
const double EPS = 1e-9;
int main() {
  ios::sync_with_stdio(0);
  int a;
  string st;
  cin >> a >> st;
  if (not a < 3200) {
    cout << st << endl;
  } else {
    cout << "red\n";
  }
}
