using System;

public class Program

{

    public static void Main()

    {

        //This is the creating the shapes and displaying their basic information

        shape [] Shapes = new shape[10];

        for(int i = 0; i < 5; i++)

        {

            shape Circle = new circle();

            Shapes[i] = Circle;

        }

        for(int i = 5; i < 10; i++)

        {

            shape Rectangle = new rectangle();

            Shapes[i] = Rectangle;

        }

        foreach (shape shape in Shapes)

        {

            shape.Display();

            Console.WriteLine("\n");

        }

        //This one is calculating their perimeters

        for(int i = 0; i < 10;i++)

        {

            Shapes[i].perimeter();

        }

    }

}

//BASE CLASS

public class shape

{

    private string color;

    private int opacity;

    public shape()

    {

        color = "white";

        opacity = 0;

    }

    public shape(string color, int opacity)

    {

        this.color = color;

        this.opacity = opacity;

    }

    public virtual void Display()

    {

        Console.WriteLine($"This is a shape is {color} and its opacity is {opacity}%");

    }

    public virtual void perimeter()

    {

        Console.WriteLine("The specific shape is unkown, so we don't know the perimeter.");

    }

}

//CIRCLE

public class circle : shape

{

    private int radius;

    private int xCoord;

    private int yCoord;

    public circle():base()

    {

        radius = 1;

        xCoord = 0;

        yCoord = 0;

    }

    public circle(int radius, int xCoord, int yCoord, string color, int opacity):base(color,opacity)

    {

        this.radius = radius;

        this.xCoord = xCoord;

        this.yCoord = yCoord;

    }

    public override void Display()

    {

        base.Display();

        Console.WriteLine($"This circle has a radius of {radius} and has its origin at ({xCoord},{yCoord})");

    }

    public override void perimeter()

    {

        Console.WriteLine($"The circumfrence is {3.141592653589793238462643383279502884197*radius*radius}");

    }

}

//RECTANGLE

public class rectangle : shape

{

    private int width;

    private int length;

    public rectangle()

    {

        width = 1;

        length = 1;

    }

    public rectangle(int width, int length, string color, int opacity):base(color,opacity)

    {

        this.width = width;

        this.length = length;

    }

    public override void Display()

    {

        base.Display();

        Console.WriteLine($"This rectangle has a length of {length} and a width of {width}");

    }

    public override void perimeter()

    {

        Console.WriteLine($"The perimeter is {width*2+length*2}");

    }

}