func_code_string: #include <bits/stdc++.h>   using namespace std;      int main()   {       ios_base::sync_with_stdio(0); cin.tie(0);       long long cases, no_points, xcoord, ycoord;       cin >> cases;       for (int i = 0; i < cases; i++)       {           vector <long long> xpoints;           vector <long long> ypoints;                      long long choicesx,choicesy = 1;                     cin >> no_points;           for (int x = 0; x < no_points; x++)           {               cin >> xcoord >> ycoord;               xpoints.push_back(xcoord);               ypoints.push_back(ycoord);           }           if(no_points % 2 == 1){               cout << 1 <<   n ;           }              else{               sort(xpoints.begin(), xpoints.end());               sort(ypoints.begin(), ypoints.end());               choicesx = xpoints[(no_points/2)] - xpoints[(no_points/2) - 1] + 1;               choicesy = ypoints[(no_points/2)] - ypoints[(no_points/2) - 1] + 1;               cout << choicesx * choicesy <<   n ;           }                                        }              return 0;   }