#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

int to_decimal(string str){
    int n = str.size();
    int base = 1, res = 0;
    for(int i = n-1; i >= 0; --i){
        res += base * (str[i] - '0');
        base *= 4;
    }
    return res;
}

int main(){
    string N;
    cin >> N;

    int val = to_decimal(N);
    
    if(val % 15 == 0){
        cout << "FizzBuzz" << endl;
    }else if(val % 3 == 0){
        cout << "Fizz" << endl;
    }else if(val % 5 == 0){
        cout << "Buzz" << endl;
    }else{
        cout << N << endl;
    }
    return 0;
}