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  1. Prepare
  2. Python
  3. Sets
  4. Set .difference() Operation
  5. Discussions

Set .difference() Operation

  • sezzaldiin0
     + 0 comments
    # Enter your code here. Read input from STDIN. Print output to STDOUT
n = int(input())
n_ = set(map(int, input().split()))

b = int(input())
b_ = set(map(int, input().split()))

p = n_.difference(b_)

print(len(p))