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

namespace _2.Harvest
{
    class Program
    {
        static void Main(string[] args)
        {
            var area = int.Parse(Console.ReadLine());
            var grapePerMeter = double.Parse(Console.ReadLine());
            var wineNeeded = int.Parse(Console.ReadLine());
            var workers = int.Parse(Console.ReadLine());
            var totalGrapes = area * grapePerMeter;
            var wine = (0.4 * totalGrapes) / 2.5;
            var residue = Math.Abs(wine - wineNeeded);
            if (wine >= wineNeeded)
            {
                Console.WriteLine("Good harvest this year! Total wine: {0} liters.", Math.Floor(wine));
                Console.WriteLine("{0} liters left -> {1} liters per person.", Math.Ceiling(residue), Math.Ceiling(residue / workers));
            }
            else
            {
                Console.WriteLine("It will be a tough winter! More {0} liters wine needed.", Math.Floor(residue));
            }

        }
    }
}