#include<bits/stdc++.h>
using lint=long long;
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    std::string s;std::cin>>s;
    lint n=s.length();
    lint three=0,five=0;
    for(lint i=0;i<n;i++){
        lint x=s.at(i)-'0';
        three+=x;
        five+=(i&1?-1:+1)*x;
    }
    three=std::abs(three)%3;
    five=std::abs(five)%5;
    std::cout<<(
        !three&&!five?"FizzBuzz"
        :!three?"Fizz"
        :!five?"Buzz"
        :s)<<'\n';
}