import sys
#input = sys.stdin.readline
#input = sys.stdin.buffer.readline #文字列はダメ
#sys.setrecursionlimit(1000000)
#import math
#import bisect
#import itertools
#import random
#from heapq import heapify, heappop, heappush
from collections import defaultdict
from collections import deque
import copy #DeepCopy: hoge = [_[:] for _ in hogehoge]
#from functools import lru_cache
#@lru_cache(maxsize=None)
MOD = pow(10,9) + 7
#MOD = 998244353
dx = [1,0,-1,0]
dy = [0,1,0,-1]
#dx8 = [1,1,0,-1,-1,-1,0,1]
#dy8 = [0,1,1,1,0,-1,-1,-1]

def main():
    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):
        #赤、赤
        temp = A[2*i] + A[2*i+1] + X[i]
        #赤、青
        temp = max(temp, A[2*i] + B[2*i+1] + Y[i])
        #青、赤
        temp = max(temp, B[2*i] + A[2*i+1] + Y[i])
        #青、青
        temp = max(temp, B[2*i] + B[2*i+1] + X[i])
        ans += temp
    print(ans)


if __name__ == '__main__':
    main()