n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
x = list(map(int, input().split()))
y = list(map(int, input().split()))

ans = 0
for i in range(n):
    ans += max(a[2 * i] + a[2 * i + 1] + x[i], b[2 * i] + b[2 * i + 1] + x[i], a[2 * i] + b[2 * i + 1] + y[i], b[2 * i] + a[2 * i + 1] + y[i])
print(ans)