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
if 1<=n<=10**5:
  pass
else:
  raise Exception
if len(a)==len(b)==2*n and len(x)==len(y)==n:
  pass
else:
  raise Exception
for i in range(n):
  ans+=max(a[2*i]+a[2*i+1]+x[i],a[2*i]+b[2*i+1]+y[i],b[2*i]+a[2*i+1]+y[i],b[2*i]+b[2*i+1]+x[i])
print(ans)