Help me in solving VCOUPLE problem

help
,
1

My issue

explain me the approach

My code

for i in range(int(input())):
    n=int(input())
    a=list(map(int,input().split()))
    b=list(map(int,input().split()))
    # a.sort
    # b.sort
    print(a.sort)
    print(b.sort)

Problem Link: B - Valentine Couples Practice Coding Problem

2

You have to sort one array in ascending order and other one in decending order and print the maximum value possible of sum of both array for each index;