#include<iostream>
using namespace std;

string in;
long long int bit_sum=0,bit_rest_sum=0;
bool flag_fizz=false,flag_buzz=false;

int main(){
    cin>>in;

    for(int i=0; i<in.size(); i++){
        bit_sum+=in[i]-'0';
    }
    flag_fizz=bit_sum%3==0;

    for(int i=0; i<in.size(); i++){
        bit_rest_sum+=((i%2)?-1:1)*(in[i]-'0');
    }
    flag_buzz=bit_rest_sum%5==0;

    if(flag_fizz&&flag_buzz){
        cout<<"FizzBuzz"<<endl;
    }
    else if(flag_fizz){
        cout<<"Fizz"<<endl;
    }
    else if(flag_buzz){
        cout<<"Buzz"<<endl;
    }else{
        cout<<in<<endl;
    }

    return 0;
}