#!/bin/python3

import sys

def maximumPeople(p, x, y, r):
    #print(p,x,y,r)
    if(x[0]-r[0]==y[0]):
        return max([x[0]+x[1],p[0]+p[1]])
    #print(p,x,y,r)
    # Return the maximum number of people that will be in a sunny town after removing exactly one cloud.

if __name__ == "__main__":
    n = int(input().strip())
    p = list(map(int, input().strip().split(' ')))
    x = list(map(int, input().strip().split(' ')))
    m = int(input().strip())
    y = list(map(int, input().strip().split(' ')))
    r = list(map(int, input().strip().split(' ')))
    result = maximumPeople(p, x, y, r)
    print(result)