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)
        {
            int hoursNeeded = int.Parse(Console.ReadLine());
            int days = int.Parse(Console.ReadLine());
            int workers = int.Parse(Console.ReadLine());

            double workDays = days * 0.9;
            double workHours = workDays * workers * (8 + 2);
            workHours = Math.Floor(workHours);

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