def fizz_buzz(x):

	if x % 3 == 0 and x % 5 == 0:
		return "FizzBuzz"

	elif x % 3 == 0:
		return "Fizz"

	elif x % 5 == 0:
		return "Buzz"

	
	else:
		return x

print (fizz_buzz(15))
print (fizz_buzz(18))
print (fizz_buzz(25))
print (fizz_buzz(4))		
	 	
		
		
