Harvest

using System;
class Program
{
    static void Main(string[] args)
    {
        double x = double.Parse(Console.ReadLine());
        double y = double.Parse(Console.ReadLine());
        double z = double.Parse(Console.ReadLine());
        double n = double.Parse(Console.ReadLine());


        double total = 0.40 * ((x * y) / 2.5);
        if (total >= z)
        {
            Console.WriteLine($"Good harvest this year! Total wine: {Math.Floor(total)} liters.\n{Math.Ceiling(total - z)} liters left -> {Math.Ceiling((total - z) / n)} liters per person.");
        }
        else
        {
            Console.WriteLine($"It will be a tough winter! More {Math.Floor(z - total)} liters wine needed.");
        }
    }
}