using System;

class Program
{
    static void Main()
    {
        var format = "dd-MM-yyyy";
        var input = Console.ReadLine();

        DateTime day = DateTime.ParseExact(input, format, System.Globalization.CultureInfo.InvariantCulture);
        //DateTime day = Convert.ToDateTime(input);

        DayOfWeek today = day.DayOfWeek;

        if (today == DayOfWeek.Friday || today == DayOfWeek.Saturday)
        {
            Console.WriteLine("Party night! Today is: {0}", today);
        }
        else
        {
            Console.WriteLine("No party tonight! Today is: {0}", today);
        }
    }
}