#include "bits/stdc++.h"

#define rep(a,b) for(int a = 0;a < b;a++)
#define REP(i, x, n) for(int i = x; i < n; i++)
#define P(a) cout << a << endl
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
int dx[] = { 1, -1 , 0 , 0 };
int dy[] = { 0,  0,  1, -1 };
ll MOD = 1000000007;
unsigned long long str_to_int(std::string str) {
  unsigned long long ret;
  std::stringstream ss; ss << str;
  ss >> ret;
  return ret;
}

int main() {
  string s;
  cin >> s;
  ll s3 = 0,s5 = 0,s15 = 0,m = 1;
  rep(i,s.length()){
    s3 = (s3*4 + int(s[i]-'0')) % 3;
    s5 = (s5*4 + int(s[i]-'0')) % 5;
    s15 = (s15*4 + int(s[i]-'0')) % 15;
  }
  if(s15 == 0){
    P("FizzBuzz");
  }else if(s5 == 0){
    P("Buzz");
  }else if(s3 == 0){
    P("Fizz");
  }else{
    P(s);
  }
}