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No Idea!

  • akshay_vijay123
     + 0 comments

    Simple Python Solution (using counter):

    from collections import Counter
n, m = map(int, input().split())
arr = list(map(int, input().split()))
A = list(set(map(int, input().split())))
B = list(set(map(int, input().split())))

counter = Counter(arr)
ans = sum(counter[i] for i in A if i in counter) - sum(counter[i] for i in B if i in counter)
print(ans)