#include <bits/stdc++.h>

using namespace std;

#define fst(t) std::get<0>(t)
#define snd(t) std::get<1>(t)
#define thd(t) std::get<2>(t)
#define unless(p) if(!(p))
#define until(p) while(!(p))

using ll = long long;
using P = std::tuple<int,int>;

const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1};

std::string S;

int main(){
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    std::cin >> S;

    int r3 = 0, r5 = 0;
    
    for(int i=0;i<S.size();++i){
        int x = S[i] - '0';
        r3 = (r3 * 4 + x) % 3;
        r5 = (r5 * 4 + x) % 5;
    }

    if(r3 == 0 && r5 == 0){
        std::cout << "FizzBuzz" << std::endl;
    }else if(r3 == 0){
        std::cout << "Fizz" << std::endl;
    }else if(r5 == 0){
        std::cout << "Buzz" << std::endl;
    }else{
        std::cout << S << std::endl;
    }
}