Programming Basics Exams/28AUG16/02. Firm

using System;

namespace _15.Firm
{
    class Firm
    {
        static void Main(string[] args)
        {
            int hoursNeeded = int.Parse(Console.ReadLine());
            int daysAvailable = int.Parse(Console.ReadLine());
            int workersOvertime = int.Parse(Console.ReadLine());

            var daysEffective = daysAvailable * 0.9;
            var hoursWork = daysEffective * 8;
            var hoursOvertime = workersOvertime * 2 * daysAvailable;
            var hoursAvail = Math.Floor(hoursWork + hoursOvertime);

            if (hoursAvail>=hoursNeeded)
            {
                Console.WriteLine("Yes!{0} hours left.", (hoursAvail - hoursNeeded));
            }
            else
            {
                Console.WriteLine("Not enough time!{0} hours needed.", (hoursNeeded - hoursAvail));
            }
        }
    }
}