using System;

using System.Globalization;

​

namespace _01_DayOfWeek

{

    public class DayOfWeek

    {

        public static void Main(string[] args)

        {

            string dateAsText = Console.ReadLine();

            DateTime date = DateTime.ParseExact(dateAsText, "d-M-yyyy", CultureInfo.InvariantCulture);

            Console.WriteLine(date.DayOfWeek);

        }

    }

}