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(max(a[i*2] + a[i*2+1], b[i*2] + b[i*2+1]) + x[i], max(a[i*2] + b[i*2+1], b[i*2] + a[i*2+1]) + y[i])
print(ans)