using System;

    namespace ConsoleApplication8

    {

        class Tape

        {

            public Tape(int length, int width)

            {

                len = length;

                wid = width;

            }

            public int len { get; set; }

            public int wid { get; set; }

​

            public override string ToString()

            {

                return string.Format("{0}\nLength: {1}\nWidth: {2}", GetType(), len, wid);

            }

        }

​

        class VideoTape : Tape

        {

            public int PlayTime { get; set; }

            public VideoTape(int length, int width, int playTime)

                : base(length, width)

            {

                PlayTime = playTime;

            }

            public override string ToString()

            {

                return string.Format("{0}\nPlay Time: {1}", base.ToString(), PlayTime);

            }

        }

        class AdhesiveTape : Tape

        {

            private int _stickiness;

            public AdhesiveTape(int length, int width, int stickiness)

                : base(length, width)

            {

                Stickiness = stickiness;

            }

            public int Stickiness

            {

                get { return _stickiness; }

                set

                {

                    if (value >= 1 && value <= 10)

                        _stickiness = value;

                    else

                        _stickiness = 0;

                }

            }

            public override string ToString()

            {

                return string.Format("{0}\nStickiness: {1}",

                    base.ToString(), (Stickiness == 0) ? "Invalid Input" : Stickiness.ToString());

            }

        }

​

        public static class Program

        {

            public static void Main(string[] args)

            {

                var tape = new Tape(100, 10);

                var videoTape = new VideoTape(50, 5, 200);

                var adhesiveTape = new AdhesiveTape(500, 8, 8);

​

                Console.WriteLine(tape);

                Console.WriteLine(videoTape);

                Console.WriteLine(adhesiveTape);

​

                Console.ReadLine();

            }

        }

    }