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english = int(input()) roll_english= set(map(int, input().split())) franch= int(input()) roll_franch = set(map(int, input().split())) print(len(roll_english.union(roll_franch)))
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Set .union() Operation
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english = int(input()) roll_english= set(map(int, input().split())) franch= int(input()) roll_franch = set(map(int, input().split())) print(len(roll_english.union(roll_franch)))