#include <bits/stdc++.h>
using namespace std;
int main() {
  string a, s;
  cin >> a >> s;
  long long sum = 0;
  long long x = 1;
  for (int i = 0; i < a.size(); i++) {
    sum += (a[i] - '0') * x;
    x *= 10;
  }
  if (sum < 3200) {
    cout << "red";
  } else
    cout << s;
  return 0;
}
