import sys input = lambda :sys.stdin.readline()[:-1] ni = lambda :int(input()) na = lambda :list(map(int,input().split())) yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES") no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO") ####################################################################### n = ni() a = na() b = na() x = na() y = na() ans = 0 for i in range(n): a1,a2 = a[i*2:i*2+2] b1,b2 = b[i*2:i*2+2] X = x[i] Y = y[i] ans += max(a1+a2+X,b1+b2+X,a1+b2+Y,b1+a2+Y) print(ans)