using System;
using System.Numerics;

public class prog{
    public static void Main(){
        string line = Console.ReadLine();
        
        // BigInteger num = new BigInteger(line);
        
        
        int odd = 0;
        int even = 0;
        
        for (int i = 0; i < line.Length; ++i){
            int c = line[i] - '0';
            if (i%2 == 1) odd  += c;
            else          even += c;
        }
        
        bool div5 = (odd - even) % 5 == 0;
        bool div3 = (odd + even) % 3 == 0;
        
        if (div5 && div3){
            Console.WriteLine("FizzBuzz");
        }else if (div5){
            Console.WriteLine("Buzz");
        }else if (div3){
            Console.WriteLine("Fizz");
        }else{
            Console.WriteLine(line);
        }
	}
}