using System;

public class Program

{

    public static void Main()

    {

        point p1=new point(3,4);

        point p2=new point(2,5);

        malben m=new malben(p2,p1,3,5);

        Console.WriteLine(m.get_area());

    }

}

public class point

{

    private double x;

    private double y;

    public point(double x,double y)

    {

        this.x=x;

        this.y=y;

    }

    public double get_x()

    {

        return this.x;

    }

    public double get_y()

    {

        return this.y;

    }

    public void set_x(int s)

    {

        this.x=s;

    }

    public void set_y(int y)

    {

        this.y=y;

    }

    public override string ToString()

    {

        return "("+this.x+","+this.y+")";

    }

}

public class malben

{

    private point BL;

    private point TR;

    private double height;

    private double width;

    public malben(point BL,point TR,double height,double width)

    {

        this.BL=BL;

        this.TR=TR;

        this.width=width;

        this.height=height;

    }

        public point get_BL()

    {

        return this.BL;

    }

    public point get_TR()

    {

        return this.TR;

    }

    public void set_BL(point p)

    {

        this.BL=p;

    }

    public void set_TR(point p)

    {

        this.TR=p;

    }

    public double get_area()

    {

        return this.height*this.width;

    }

    public double get_perimeter()

    {

        return this.width+this.width+this.height+this.height;

    }

}