Next date

using System;

class NextDate
{
    static void Main()
    {
        int d = int.Parse(Console.ReadLine());
        int m = int.Parse(Console.ReadLine());
        int y = int.Parse(Console.ReadLine());

        DateTime thisDate1 = new DateTime();

        try
        {
            thisDate1 = new DateTime(y, m, d + 1);
        }
        catch
        {
            try
            {
                thisDate1 = new DateTime(y, m + 1, 1);
            }
            catch
            {
                thisDate1 = new DateTime(y + 1, 1, 1);
            }
        }
        Console.WriteLine(thisDate1.ToString("d.M.yyyy"));
    }
}