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

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            var xKvMeterLoze = int.Parse(Console.ReadLine());
            var yGrozdeForOneKvMeter = double.Parse(Console.ReadLine());
            var zNujniLitterVino = int.Parse(Console.ReadLine());
            var countWorkers = int.Parse(Console.ReadLine());

            var allGrozde = xKvMeterLoze * yGrozdeForOneKvMeter;
            var vino = (0.4 * allGrozde) / 2.5;

            if(vino >= zNujniLitterVino)
            {
                Console.WriteLine($"Good harvest this year! Total wine: {Math.Floor(vino)} liters.");
                var extraWine = Math.Ceiling(vino - zNujniLitterVino);
                Console.WriteLine($"{Math.Ceiling(extraWine)} liters left -> {Math.Ceiling(extraWine / countWorkers)} liters per person.");
            }
            else if(vino < zNujniLitterVino)
            {
                Console.WriteLine($"It will be a tough winter! More {Math.Floor(zNujniLitterVino - vino)} liters wine needed.");
            }
        }
    }
}