dima4512zaz

int k = n / 2;
  int l = c / 2;
  for (int i = 0; i <= k; i++)
  {
    for (int j = 0; j <= l; j++)
    {
      int temp = a[i][j];
      a[i][j] = a[i + k][j + l];
      a[i + k][j + l] = temp;
      cout << temp << " ";
    }
  }

int k = (n + 1) / 2;
  int l = (c + 1) / 2;
  for (int i = 0; i < n / 2; i++)
  {
    for (int j = 0; j < c / 2; j++)
    {
      int temp = a[i][j];
      a[i][j] = a[i + k][j + l];
      a[i + k][j + l] = temp;
      cout << temp << " ";
    }
  }