#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <cmath>
#include <cstdio>
#include <functional>
#include <numeric>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <utility>
#include <sstream>
#include <complex>
#include <fstream>
#include <bitset>
#include <time.h>
#include <tuple>

using namespace std;

typedef long long ll;
typedef pair<ll, ll> P;
typedef vector<ll> V;
typedef complex<double> Point;

#define PI acos(-1.0)
#define EPS 1e-10
const ll INF = 1e12;
const ll MOD = 1e9 + 7;

#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define rep(i,N) for(int i=0;i<(N);i++)
#define ALL(s) (s).begin(),(s).end()
#define EQ(a,b) (abs((a)-(b))<EPS)
#define EQV(a,b) ( EQ((a).real(), (b).real()) && EQ((a).imag(), (b).imag()) )
#define fi first
#define se second
#define N_SIZE (1LL << 20)
#define NIL -1
#define MAX_N 100100

string s;
ll ans[2001000];

bool isf() {
	if (s.size() == 1)return false;
	rep(i, s.size() - 1) {
		ans[i + 1] -= ans[i];
	}
	return ans[s.size() - 1] == 0;
}

bool ist(string s) {
	ll res = 0;
	rep(i, s.size()) {
		res += (ll)(s[i] - '0');
	}
	return res % 3 == 0;
}

int main() {
	cin >> s;
	rep(i, s.size()) {
		ans[i] = s[i] - '0';
	}
	if (ist(s)) {
		if (isf())cout << "FizzBuzz" << endl;
		else cout << "Fizz" << endl;
	}
	else if (isf()) cout << "Buzz" << endl;
	else cout << s << endl;
}