using System;

public class Program

{

    public static void Main()

    {

        Child child = new Child();

        Console.WriteLine("Hello World");

    }

    abstract class Base

    {

        int count = 7;

​

        public Base()

        {

            count = this.getCount();

        }

​

        public abstract int getCount();

    }

​

    class Child : Base

    {

        int field = 5;

​

        public Child()

        {

            field = 8;

        }

​

        public override int getCount()

        {

            return field;

        }

    }

}