#include "bits/stdc++.h"
using namespace std;

#define DEBUG(x) cout<<#x<<": "<<x<<endl;
#define DEBUG_VEC(v) cout<<#v<<":";for(int i=0;i<v.size();i++) cout<<" "<<v[i]; cout<<endl

typedef long long ll;
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
#define pii pair<int,int>
#define pis pair<int,string>
#define psi pair<string,int>
#define pll pair<ll,ll>
const int inf = 1000000001;
const ll INF = 1e18 * 4;
#define MOD 1000000007
#define mod 1000000009
#define pi 3.14159265358979323846
#define Sp(p) cout<<setprecision(15)<<fixed<<p<<endl;
int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 };
int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };

int main() {
	int i, j;
	string s;
	cin >> s;
	int n = s.size();
	vi t(n), f(n);
	for (i = 0; i < n; i++) {
		t[i] = (s[i] - '0') % 3;
		if ((n-i) % 2) {
			f[i] = (s[i] - '0') % 5;
		}
		else {
			f[i] = (s[i] - '0') * 4 % 5;
		}
	}
	int tans = 0, fans = 0;
	for (i = 0; i < n; i++) {
		tans = (tans + t[i]) % 3;
		fans = (fans + f[i]) % 5;
	}
	if (tans == 0) {
		cout << "Fizz";
	}
	if (fans == 0) {
		cout << "Buzz" << endl;
		return 0;
	}
	if (tans) {
		cout << s;
	}
	cout << endl;
}