Harvest

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

namespace ConsoleApplication21
{
    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());
            int persons = int.Parse(Console.ReadLine());
            double grapes =x * y;
            double wine;
            wine =(40 * grapes / 100) / 2.5;
            if (wine >= z)
            {
                double remains = wine - z;
                double wineForPersons = remains / persons;
                Console.WriteLine("Good harvest this year! Total wine: {0} liters.",Math.Floor(wine));
                Console.WriteLine("{0} liters left -> {1} liters per person.",Math.Ceiling(remains),
                    Math.Ceiling(wineForPersons));
             }
            else if (wine < z)
            {

                double needOf = z - wine;
                Console.WriteLine("It will be a tough winter! More {0} liters wine needed.",Math.Floor(needOf));

            }
        }
    }
}