int main(void)
{
    const int size = 150;
    Matrix m(size, size);
    m = Matrix(size, size);
    for (int i(0); i < size; i++)
        for (int j(0); j < size; j++)
            m[i][j] = rand() % 10;
    printf("Det: %lf, %dn", m.Det(), sizeof(m.Det()));
}