using System;

public class Program

{

    public class A

    {

        public int MyNum {get; set;}

    }

    public static void Main()

    {

        int bla = 7;

        string yo = "heya";

        Console.WriteLine($@"Hello World ""{bla}"" ""{yo}"" ");

        A a1 = null;

        A a2 = new A();

        a2.MyNum = 5;

        test(a1);

        test(a2);

    }

    public static void test(A a)

    {

        if(a?.MyNum > 2){

            Console.WriteLine("It's bigger");

        }

        else

        {

            Console.WriteLine("IDC :(");

        }

    }

}