#include <bits/stdc++.h>
using namespace std;
int main() {
  cin.tie(NULL);
  ios::sync_with_stdio(false);
  int a, s;
  cin >> a >> s;
  if (a >= 3200) {
    cout << s << endl;
  } else {
    cout << "red" << endl;
  }
  return 0;
}
