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

print(ans)