#include <bits/stdc++.h>
using namespace std;
long long primes[10000000];
int main() {
  long long i, j, k, m, n, q, t, c, a;
  string s;
  cin >> a >> s;
  if (a > 3200)
    cout << s << endl;
  else if (a < 3200)
    cout << "red" << endl;
  cout << endl;
}
