using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var now = DateTime.Now;

        var arriving = new DateTime(2017, 5, 5);

        var timeLeft = arriving - now;

        Console.WriteLine(string.Format("Кісічка приїде через {0} дня(ів)", (int)timeLeft.TotalDays));

    }

}