#include <bits/stdc++.h>
using namespace std;
int main() {
  int a;
  char s[11] = {0};
  cin >> a;
  for (int i = 1; i <= 10; i++) {
    cin >> s[i];
  }
  if (a >= 3200) {
    for (int i = 1; i <= 10; i++) {
      cout << s[i];
    }
  } else {
    cout << "red";
  }
  return 0;
}
