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  1. Prepare
  2. Python
  3. Sets
  4. No Idea!
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No Idea!

  • asanjyal56
     + 0 comments
    # Enter your code here. Read input from STDIN. Print output to STDOUT
n,m = map(int,input().split())
array_n = list(map(int,input().split()))
set_a = set(map(int,input().split()))
set_b = set(map(int,input().split()))

happiness = 0
for i in array_n:
    if i in set_a:
        happiness += 1
    elif i in set_b:
        happiness -= 1

print(happiness)