using System;

namespace Harvest
{
    class Program
    {
        static void Main(string[] args)
        {
            // read input

            double vineyardArea = double.Parse(Console.ReadLine());
            double grapePerSquare = double.Parse(Console.ReadLine());
            double Neededliters = double.Parse(Console.ReadLine());
            double workers = double.Parse(Console.ReadLine());

            //count grapes per kg
            var harvestPerVine = 0.4 * vineyardArea * grapePerSquare;
            var vine = harvestPerVine / 2.5;
            if (vine >= Neededliters)
            {
                var vineLeft = vine - Neededliters;
                Console.WriteLine("Good harvest this year! Total wine: {0} liters.", Math.Floor(vine));         //Кой е placeholder-а? Ако е vine (защо има Math.Floor) пред него?
                Console.WriteLine("{0} liters left -> {1} liters per person");
            }
            else
            {
                Console.WriteLine("It will be a tough winter! More {0} liters wine needed.", Math.Floor(Neededliters - vine));

            }
        }
    }
}