#!/bin/python3

import sys
import operator

def maximumPeople(p, x, y, r):
    # Return the maximum number of people that will be in a sunny town after removing exactly one cloud.
    #P - population of ith town
    #x - Locatioin of ith town
    #y - location of cloud on number line
    #r - range of ith cloud
    longest = r.index(max(r))
    return y[longest]

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)