this code passed all test cases, this approach did'nt use list comprehension. solution in python 3

` len_int = list(map(int,input().split(" "))) n , m = len_int[0], len_int[1]

like_num = list(map(int,input().split(" "))) A = set(map(int,input().split(" "))) B = set(map(int,input().split(" "))) happiness = 0

for i in like_num: if i in A: happiness += 1 if i in B: happiness -= 1

print(happiness)