using System;
using System.Collections.Generic;
using System.Text;

namespace Exercise1
{
    public abstract class Shape
    {
        private int color;

        public Colors Color
        {
            get
            {
                Colors returnValue = Colors.NONE;

                switch (color)
                {
                    case 0x00FF0000:
                        returnValue = Colors.RED;
                        break;
                    case 0x0000FF00:
                        returnValue = Colors.GREEN;
                        break;
                    case 0x000000FF:
                        returnValue = Colors.BLUE;
                        break;
                }

                return returnValue;
            }
            set
            {
                switch (value)
                {
                    case Colors.RED:
                        this.color = 0x00FF0000;
                        break;
                    case Colors.GREEN:
                        this.color = 0x0000FF00;
                        break;
                    case Colors.BLUE:
                        this.color = 0x000000FF;
                        break;
                }
            }
        }

        public enum Colors
        {
            NONE = 0,
            RED = 1,
            GREEN = 2,
            BLUE = 3
        }

        public abstract double GetArea();

        public abstract double GetPerimeter();
    }
}