#include <bits/stdc++.h>
using namespace std;
const long long mod = 1e9 + 7;
const long long inf = LLONG_MAX;
const long long N = 1e5 + 10;
int main() {
  ios_base ::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int a;
  cin >> a;
  string s;
  cin >> s;
  if (a <= 3200) {
    cout << s << "\n";
  } else {
    cout << "red\n";
  }
  return 0;
}
