#include <bits/stdc++.h>

using namespace std;

int solve(string s, int p) {
  reverse(s.begin(), s.end());

  int sum = 0, k = 1;
  for (int i = 0; i < s.size(); i++) {
    sum += (s[i] - '0') * k;
    sum %= p;
    k *= 4;
    k %= p;
  }
  return sum == 0;
}

int main(void) {
  string s;
  cin >> s;

  bool fizz = solve(s, 3), buzz = solve(s, 5);
  if (fizz && buzz) {
    cout << "FizzBuzz\n";
  } else if (fizz) {
    cout << "Fizz\n";
  } else if (buzz) {
    cout << "Buzz\n";
  } else {
    cout << s << endl;
  }

  return 0;
}