n = int(input())
s = list(map(int, input().split()))
t = list(map(int, input().split()))

s1 = s.count(1)
t1 = t.count(1)
s2 = s.count(2)
t2 = t.count(2)

if s2 == 0 and t2 == 0:
    print(max(s1, t1))
elif s2 > 0 and t2 > 0:
    print((s2 + t2) * n - s2 * t2)
elif s2 == 0:
    print(t1 + t2 * n)
elif t2 == 0:
    print(s1 + s2 * n)