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#include <bits/stdc++.h>
using namespace std;
int tc, n, _min, tmp;
vector <int> v;
int main(){
scanf("%d", &tc);
while(tc--){
scanf("%d", &n);
v.resize(n); _min = INT_MAX;
for(int i = 0; i < n; i++)
scanf("%d", &v[i]);
for(int i = 0; i < n; i++){
tmp = 0;
for(int j = 0; j < n; j++)
tmp += abs(v[i] - v[j]);
if(tmp < _min)
_min = tmp;
}
printf("%d\n", _min);
}
return(0);
}