1000 Days After Birth

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

namespace _1000DaesAfterBirth
{
    class Program
    {
        static void Main(string[] args)
        {
           //  string dataBirthday = Console.ReadLine();
           string format = "dd-MM-yyyy";
            var dataBirthday = DateTime.ParseExact(Console.ReadLine(),format , CultureInfo.InvariantCulture);
            DateTime dataAfter1000Days= dataBirthday.AddDays(999);

            Console.WriteLine(dataAfter1000Days.ToString(format));
        }
    }
}