using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var date1 = new DateTime(2019,8,1);

        var date2 = new DateTime(2019,8,31,23,59,59);

        var diff = (date2-date1).TotalDays;

        string MyString = "225566";

        Console.WriteLine(MyString.PadLeft(7, '0'));

        Console.WriteLine(MyString.PadLeft(7, '0').Substring(0, 2));

        Console.WriteLine(MyString.PadLeft(7, '0').Substring(2, 5));

        Console.WriteLine(MyString.PadLeft(7, '0').Substring(5, 6));

    }

}