Vito's Family

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <map>
#include <limits>
#include <time.h>
#include <set>
#include <cmath>
using namespace std;
//#define mycom
#ifdef mycom
#include <fstream>
ifstream fin("input");
#else
#define fin cin
#endif

using namespace std;
int main()
{
 int casenumber;
 fin >> casenumber;

 for(int i=1; i<=casenumber; i++)
 {
  int headnumber;
  fin >> headnumber;
  vector<int> s;
  for(int j=1; j<=headnumber; j++)
  {
   int temp;
   fin >> temp;
   s.push_back(temp);
  }
  
  int nmin = numeric_limits<int>::max();
  
  for(vector<int>::iterator iter = s.begin(); iter != s.end(); ++iter)
  {
   int sum = 0;
   for(vector<int>::iterator iter2 = s.begin(); iter2 != s.end(); ++iter2)
   {
    sum += abs(*iter - *iter2);
   }
   nmin = min(sum, nmin);
  }

  cout << nmin << endl;
 }
 return 0;
}