import java.util.*;
import java.lang.*;
import java.math.*;

public class prog {

    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        
        BigInteger num = new BigInteger(line,4);
        
        BigInteger rem5 = num.remainder(new BigInteger("5"));
        BigInteger rem3 = num.remainder(new BigInteger("3"));
        
        boolean div5 = BigInteger.ZERO.equals(rem5);
        boolean div3 = BigInteger.ZERO.equals(rem3);
        
        if (div5 && div3){
            System.out.println("FizzBuzz");
        }else if (div5){
            System.out.println("Buzz");
        }else if (div3){
            System.out.println("Fizz");
        }else{
            System.out.println(line);
        }
	}
}