public static void Main()
var hoursP = int.Parse(Console.ReadLine());
var days = double.Parse(Console.ReadLine());
var workers = int.Parse(Console.ReadLine());
var mid =days-(days*0.1);
var result = mid - hoursP;
Console.WriteLine("Yes!{0} hours left.",Math.Truncate(result));
Console.WriteLine("Not enough time!{0} hours needed.",Math.Ceiling(result*-1));