#include <iostream>

#include<cstdio>

#include<algorithm>

#include<cstring>

#include<cmath>

using namespace std;

int cmp(int a,int b)

{

    return a>b;

}

int a[],b[];

int main()

{

    int n;

    int t;

    int sum;

    scanf("%d",&t);

    while(t--)

    {

        sum=;

        scanf("%d",&n);

        for(int i=;i<n;i++)

        {

            scanf("%d",&a[i]);

        }

        sort(a,a+n,cmp);

        for(int i=;i<n;i++)

        {

            scanf("%d",&b[i]);

        }

        sort(b,b+n);

        sum=;

        for(int i=,j=;i<n,j<n;i++,j++)

        {

            sum += (a[i]-b[j])*(a[i]-b[j]);

        }

        printf("%d\n",sum);//错了，lld！！

    }

    return ;

}