using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Globalization;

namespace _01.CountWorkingDays
{
    class CountWorkingDays
    {
        static void Main()
        {
            //Console.Write("Write first date in format dd-MM-yyyy: ");
            string input = Console.ReadLine();
            DateTime firstDate = DateTime.ParseExact(input, "dd-MM-yyyy", CultureInfo.InvariantCulture);

            //Console.Write("Write second date in format dd-MM-yyyy: ");
            input = Console.ReadLine();
            DateTime secondDate = DateTime.ParseExact(input, "dd-MM-yyyy", CultureInfo.InvariantCulture);

            DateTime[] nonWorkingDays = new DateTime[]
            {
                new DateTime(firstDate.Year, 01, 01),
                new DateTime(firstDate.Year, 03, 03),
                new DateTime(firstDate.Year, 05, 01),
                new DateTime(firstDate.Year, 05, 06),
                new DateTime(firstDate.Year, 05, 24),
                new DateTime(firstDate.Year, 09, 06),
                new DateTime(firstDate.Year, 09, 22),
                new DateTime(firstDate.Year, 11, 01),
                new DateTime(firstDate.Year, 12, 24),
                new DateTime(firstDate.Year, 12, 25),
                new DateTime(firstDate.Year, 12, 26)
            };

            int totalDays = (secondDate - firstDate).Days;
            int countWorkingDays = 0;
            DateTime currentDay = new DateTime();

            for (double i = 0; i <= totalDays; i++)
            {
                currentDay = firstDate.AddDays(i);
                if (!(currentDay.DayOfWeek.ToString() == "Saturday" || currentDay.DayOfWeek.ToString() == "Sunday"))
                {
                    if (!nonWorkingDays.Contains(currentDay))
                    {
                        countWorkingDays++;
                    }
                }
            }

            Console.WriteLine(countWorkingDays);
        }
    }
}