#include <bits/stdc++.h>
using namespace std;
int gcd(int a, int b) {
  while (a % b != 0) {
    int c = 0;
    c = a % b;
    a = b;
    b = c;
  }
  return b;
}
int kaizyo(int a) {
  long long ans = 1;
  for (int i = a; i > 0; i--) {
    ans *= i;
    ans = ans % 1000000007;
  }
  ans = ans % 1000000007;
  return ans;
}
int main() {
  int N = 0;
  string W;
  cin >> N >> W;
  if (N >= 3200) {
    cout << "red" << endl;
    return 0;
  } else {
    cout << W << endl;
    return 0;
  }
  return 0;
}
