13.1000 Days After Birth

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

class Program
{
    static void Main(string[] args)
    {
        string format = "dd-MM-yyyy";
        DateTime dayAfterThousandDays = DateTime.ParseExact(Console.ReadLine(), format, null);
        Console.WriteLine("{0:dd-MM-yyyy}", dayAfterThousandDays.AddDays(999));
    }
}