ParseDate

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

namespace ParseDates
{
    class ParseDates
    {
        static void Main()
        {
            string dates = Console.ReadLine();
            List<int> tokens = dates.Split('-').Select(int.Parse).ToList();
            DateTime date = new DateTime(tokens[2], tokens[1], tokens[0]);
            Console.WriteLine(date.DayOfWeek);
        }
    }
}