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english = int(input())
int,input().split()))
french = int(input())
subfrench = set(map(int,input().split()))
a = subenglish.symmetric_difference(subfrench)
print(len(a))
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Set .symmetric_difference() Operation
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english = int(input()) int,input().split())) french = int(input()) subfrench = set(map(int,input().split())) a = subenglish.symmetric_difference(subfrench) print(len(a))