#!/bin/python

import sys

def maximumPeople(p, x, y, r):
    # Return the maximum number of people that will be in a sunny town after removing exactly one cloud.
    y.sort()

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