#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<int, int>;
int dx4[4] = {1, 0, -1, 0}, dy4[4] = {0, 1, 0, -1};
int main() {
  int a;
  string s;
  cin >> a >> s;
  if (a >= 3200)
    cout << s << endl;
  else
    cout << 'red' << endl;
  return 0;
}
