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[i*2]+B[i*2+1]+Y[i],
    B[i*2]+A[i*2+1]+Y[i],
    A[i*2]+A[i*2+1]+X[i],
    B[i*2]+B[i*2+1]+X[i])
print(ans)