2016_August_28 Firm

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Firm
{
    class Program
    {
        static void Main(string[] args)
        {
            var hours = int.Parse(Console.ReadLine());
            var days = double.Parse(Console.ReadLine());
            var workers = int.Parse(Console.ReadLine());

            var time = (days*0.9*8);
            var adWorker = workers * (days * 2);
            var projectTime = Math.Floor(time + adWorker);


            if (projectTime >= hours)
            {
                Console.WriteLine("Yes!{0} hours left.", projectTime-hours);
            }

            else
            {
                Console.WriteLine("Not enough time!{0} hours needed.", hours-projectTime);
            }

        }
    }
}