#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

int main(){
    string N;
    cin >> N;
    int mod_3 = 0;
    int mod_5 = 0;
    for(int i = 0; i < N.size(); i++){
        mod_3 += N[i] - '0';
        if((N.size() - i) % 2 == 0){
            mod_5 += (N[i] - '0') * 4;
        }else{
            mod_5 += N[i] - '0';
        }
    }
    string ans = "";
    if(mod_3 % 3 == 0){
        ans = "Fizz";
    }
    if(mod_5 % 5 == 0){
        ans += "Buzz";
    }
    if(ans == ""){
        cout << N << endl;
    }else{
        cout << ans << endl;
    }
}