cnt = 0
a = int(input())
a1 = list(map(int, input().split()))
b = int(input())
b1 = list(map(int, input().split()))
c = int(input())
c1 = list(map(int, input().split()))
for i in a1 :
    if i in b1 and c1 and a1 :
        cnt += 1
print(cnt)

what is wrong? tells "wrong answer"