void printFinalBoard (int row, int col, int sp, int end, int step)
{
    int count;
    for (int i=0; i< row; i++)
    {
      for (int j=0; j<col; j++)
      {
       if (( sp % step) == 0)
          cout << setw(2) << setfill('0') << count << " ";
       else
          cout << "** ";
       count++;
      }
      cout << endl;
    }
}