#include <bits/stdc++.h>
using namespace std;
long long x, a[] = {3, 15, 81, 6723, 50625, 2562991875LL};
int sg[] = {0, 1, 2, 0, 3, 1, 2}, n, ans = 0;
int main() {
  scanf("%I64d", &n);
  while (n--) {
    scanf("%I64d", &x);
    int u = 0;
    while (a[u] < x && u <= 5) u++;
    ans ^= sg[u];
  }
  if (ans)
    printf("Furlo");
  else
    printf("Rublo");
  return 0;
}
