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

namespace Harvest
{
    class Program
    {
        static void Main(string[] args)
        {
            int grapeSquare = int.Parse(Console.ReadLine());
            double grapePerSquareMeter = double.Parse(Console.ReadLine());
            int wineNeededLiters = int.Parse(Console.ReadLine());
            int workers = int.Parse(Console.ReadLine());


            double grapeKilos = grapeSquare * grapePerSquareMeter;

            double wineProducingLiters = 40 * grapeKilos / 2.5 /100;


            double wineLess ;
            double wineMore ;

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