#include <bits/stdc++.h>
using namespace std;
const int MOD = 1e9 + 7;
const int INF = 1e9 + 6;
const long long LLINF = 4e18;
int main() {
  int a;
  string s;
  cin >> a >> s;
  if (a <= 3200) {
    cout << s << endl;
  } else {
    cout << "red" << endl;
  }
  getchar();
  getchar();
}
