#include <bits/stdc++.h>
using namespace std;
int gcd(int a, int b) {
  while (b > 0) {
    int c = a % b;
    a = b;
    b = c;
  }
  return a;
}
int main() {
  int n;
  cin >> n;
  string s;
  cin >> s;
  if (n > 3200) {
    cout << s << endl;
  } else {
    cout << "red";
  }
}
