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#include<stdio.h>
#include<algorithm>
using namespace std;
int main()
{
int i,t,n,a[5000],sum;
scanf("%d",&t);
while(t--)
{
int p=50000000;
scanf("%d",&n);
for(i=0;i<n;i++)
scanf("%d",&a[i]);
sort(a,a+i);
for(int j=0;j<n;j++)
{
sum=0;
for(int k=0;k<n;k++)
{
sum+=abs(a[j]-a[k]);
}
p=min(sum,p);
}
printf("%d\n",p);
}
return 0;
}