#include <bits/stdc++.h>
using namespace std;

int main() {
  string s;
  cin>>s;
  int n = s.length();
  int mod3 = 0;
  int mod5 = 0;
  for (int i=0; i<n; i++) {
    int x = s[i] - '0';
    mod3 = ((mod3 * 4) + x) % 3;
    mod5 = ((mod5 * 4) + x) % 5;
  }
  if (mod3 == 0 && mod5 == 0) {
    cout<<"FizzBuzz"<<endl;
  } else if (mod3 == 0) {
    cout<<"Fizz"<<endl;
  } else if (mod5 == 0) {
    cout<<"Buzz"<<endl;
  } else {
    cout<<s<<endl;
  }
}