using System;

public class Program

{

    public static void Main()

    {

        var d1 = new DateTime(2018,07,01);

        var d2 = new DateTime(2019,07,02);  

        var diff = Math.Abs((d1 - d2).TotalDays);

        int daysDiff = ((TimeSpan) (d2 - d1)).Days;  

        Console.WriteLine(diff);

        Console.WriteLine("Hello World");

        Console.WriteLine(daysDiff);

    }

}