using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;
using System.Globalization;
using System.Diagnostics;
using static System.Console;
using System.Numerics;
//using static System.Math;

class Program
{
    static void Main()
    {
        SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
        new Program().solve();
        Out.Flush();
    }
    Scanner cin = new Scanner();
    readonly int[] dd = { 0, 1, 0, -1, 0 }; //→↓←↑
    readonly int mod = 1000000007;


    void solve()
    {
        var Q = cin.next.ToCharArray();
        Array.Reverse(Q);
        long a3 = 0;
        long d3 = 1;
        long a5 = 0;
        long d5 = 1;
        for (int i = 0; i < Q.Length; i++)
        {
            a3 += d3 * (Q[i] - '0');
            a3 %= 3;
            d3 = (d3 * 4) % 3;

            a5 += d5 * (Q[i] - '0');
            a5 %= 5;
            d5 = (d5 * 4) % 5;
        }
        if (a3 % 3 == 0 || a5 % 5 == 0)
        {
            if (a3 % 3 == 0)
            {
                Write("Fizz");
            }
            if (a5 % 5 == 0)
            {
                Write("Buzz");
            }
            WriteLine();
        }
        else
        {
            Array.Reverse(Q);
            WriteLine(new string(Q));
        }
        
    }
    
}

class Scanner
{
    string[] s; int i;
    char[] cs = new char[] { ' ' };
    public Scanner() { s = new string[0]; i = 0; }
    public string[] scan { get { return ReadLine().Split(); } }
    public int[] scanint { get { return Array.ConvertAll(scan, int.Parse); } }
    public long[] scanlong { get { return Array.ConvertAll(scan, long.Parse); } }
    public double[] scandouble { get { return Array.ConvertAll(scan, double.Parse); } }
    public string next
    {
        get
        {
            if (i < s.Length) return s[i++];
            string st = ReadLine();
            while (st == "") st = ReadLine();
            s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
            i = 0;
            return next;
        }
    }
    public int nextint { get { return int.Parse(next); } }
    public long nextlong { get { return long.Parse(next); } }
    public double nextdouble { get { return double.Parse(next); } }
}