using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        myBool a = false;

        myBool b = false;

        if(a+b)

        {

            Console.WriteLine("sure");          

        }

        else

        {

            Console.WriteLine("nope");

        }

    }

    class myBool

    {

        bool value;

        public myBool(bool a)

        {           value = a;

        }

        public static myBool operator + (myBool a,myBool b)

        {

            return a|b;

        }

        public static myBool operator * (myBool a,myBool b)

        {

            return a&b;

        }

        public static implicit operator bool(myBool operand)

        {

            return operand.value;

        }

        public static implicit operator myBool(bool operand)

        {

            return new myBool(operand);

        }

        public string toString()

        {

            return value? "true":"false";

        }

    }

}