Инициализация set значениями пользовательского типа

class Point
{
private:
    int m_x;
    int m_y;
public:
    Point();
    Point(int x, int y);
    Point(const Point& other);
 
    int Get_X();
    int Get_Y();
    void Set_X(int x);
    void Set_Y(int y);
    bool operator == (const Point& A1) const;
    bool operator != (const Point& A);
    bool operator < (const Point& A);
 
 
    friend std::ostream& operator << (std::ostream& os, const Point& a);
    friend std::ostream& operator << (std::ostream& os, const Point* a);
};
 
std::ostream& operator << (std::ostream& os, const Point& a);
std::ostream& operator << (std::ostream& os, const Point* a);

Point::Point(int x, int y)
{
    m_x = x;
    m_y = y;
}
 
Point::Point()
{
    m_x = 0;
    m_y = 0;
}
 
Point::Point(const Point& other)
{
    m_x = other.m_x;
    m_y = other.m_y;
}
 
int Point::Get_X()
{
    return m_x;
}
 
int Point::Get_Y()
{
    return m_y;
}
 
void Point::Set_X(int x)
{
    m_x = x;
}
 
void Point::Set_Y(int y)
{
    m_y = y;
}
 
bool Point::operator==(const Point& A) const
{
    return (m_x == A.m_x && m_y == A.m_y);
}
 
bool Point::operator!=(const Point& A)
{
    return !(m_x == A.m_x && m_y == A.m_y);
}
 
bool Point::operator<(const Point& A)
{
    if (this->m_x < A.m_x && this->m_y < A.m_y)
    {
        return true;
    }
    else { return false; }
}
 
 
std::ostream& operator<<(std::ostream& os, const Point& a)
{
    os << a.m_x << " " << a.m_y;
    return os;
}
 
std::ostream& operator<<(std::ostream& os, const Point* a)
{
    os << a->m_x << " " << a->m_y;
    return os;
}

set<Point>se1;
 
    /*Point A (8, 9);
    Point B (7, 4);
    Point C (3, 5);
 
    se1.insert(A);
    se1.insert(B);
    se1.insert(C);*/
 
    se1.insert(8, 9);
    se1.insert(7, 2);
    se1.insert(4, 5);
    /*Print(se1);*/

se1.insert(Point(8, 9));
se1.insert(Point(7, 2));
se1.insert(Point(4, 5));

se1.emplace(8, 9);
se1.emplace(7, 2);
se1.emplace(4, 5);

bool operator <