#include<cstdio>
#include<cstdlib>
#include<iostream>
#include<map>
#include<memory.h>
#include<algorithm>
using namespace std;
int a[600];
int ans;
int main(){
	int T,n,i,j;
	cin>>T;
	while(T--){
		ans=0;
		scanf("%d",&n);
		for(i=1;i<=n;i++) scanf("%d",&a[i]);
		sort(a+1,a+n+1);
		int pos=(n+1)/2;
		for(i=1;i<=n;i++)
		  ans+=abs(a[i]-a[pos]);
		printf("%d\n",ans);
	}
	return 0;
}

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