#include <bits/stdc++.h>
using namespace std;
const int maxn = 50 + 5;
const int Inf = 0x3f3f3f3f;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int a;
  string str;
  while (cin >> a >> str)
    if (a < 3200)
      cout << str << "\n";
    else
      cout << "red\n";
  return 0;
}
