using System;

public class Program

{

    public static void Main()

    {

        DayOfWeek day = DateTime.Now.DayOfWeek;

​

        if ((day == DayOfWeek.Saturday) || (day == DayOfWeek.Sunday))

        {

            Console.WriteLine("Weekend!");

        }

        else

        {

            Console.WriteLine("Not weekend.");

        }

    }

}