#include <bits/stdc++.h>
using namespace std;
priority_queue<int, vector<int>, less<int> > q;
const int N = 1e3 + 10;
const int mod = 1e9 + 7;
int main() {
  int n;
  string s;
  scanf("%d", &n);
  cin >> s;
  if (n > 3200)
    printf("red");
  else
    cout << s;
  return 0;
}
