using System;

namespace Harvest_02
{
    class Program
    {
        public static void Main(string[] args)
        {
            float vineyard = int.Parse(Console.ReadLine());
            float grapePerSquare = float.Parse(Console.ReadLine());
            float wineNeed = int.Parse(Console.ReadLine());
            float workers = int.Parse(Console.ReadLine());

            float totalGrape = vineyard*grapePerSquare;
            double totalWine = (double)totalGrape*(40.0/100)/2.5;

            if (totalWine >= wineNeed)
            {
                Console.WriteLine("Good harvest this year! Total wine: {0} liters.", Math.Floor(totalWine));
                Console.WriteLine("{0} liters left -> {1} liters per person.", Math.Ceiling(totalWine-wineNeed), Math.Ceiling((totalWine-wineNeed)/workers));
            }
            else
            {
                Console.WriteLine("It will be a tough winter! More {0} liters wine needed.", Math.Floor(Math.Abs(totalWine-wineNeed)));
            }


        }
    }
}