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

Set .difference() Operation

  • lucaszychen
     + 0 comments
    n = int(input())
englishpeople = list(map(int, input().split()))

m = int(input())
frenchpeople = list(map(int, input().split()))

peepls = (set(englishpeople) - set(frenchpeople))
print(len(peepls))``