def happiness(A, B, n):
	return sum(x in n for x in A) - sum(x in n for x in B)
 
def get_data(prompt=""):
	return [int(x) for x in input(prompt).split()]
 
def test(A, B, n, expected):
	print(f"A={A} B={B} n={n}")
	r = happiness(A, B, n)
	success = "SUCCESS" if r == expected else "FAILURE"
	print(f"{success}: r={r} expected={expected}")
 
test([1, 2, 4], [1, 3, 5], [3], -1)
test([1, 2, 4], [1, 3, 5], [2], 1)
test([1, 2, 4], [1, 3, 5], [1, 2, 4, 5], 1)
 
print("------")
print(happiness(get_data(), get_data(), get_data()))
 

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MSAyIDQKMSAzIDUKMSAyIDQgNQo=

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