#include <bits/stdc++.h>
using namespace std;
int main() {
	string N;
	cin >> N;
	reverse(N.begin(), N.end());
	int fizz = 0, buzz = 0;
	int m3, m5;
	m3 = m5 = 1;
	for(int i = 0; i < N.length(); i++) {
		int n = N[i] - 0x30;
		fizz = (fizz + n * m3) % 3;
		buzz = (buzz + n * m5) % 5;
		m3 = (m3 * 4) % 3;
		m5 = (m5 * 4) % 5;
	}
	reverse(N.begin(), N.end());
	if(!fizz) cout << "Fizz";
	if(!buzz) cout << "Buzz";
	if(fizz && buzz) cout << N;
	cout << endl;
	return 0;
}