Harvest - from Exam 17/07/2016 of Programming Basics

using System;

namespace Harvest
{
    class Program
    {
        static void Main()
        {
            // Harvest - from Exam 17/07/2016 of Programming Basics
            int x = int.Parse(Console.ReadLine());       //total cb.m.
            double y = double.Parse(Console.ReadLine()); //grape per 1 cb.m.
            int z = int.Parse(Console.ReadLine());      //needed wine
            int n = int.Parse(Console.ReadLine());      //workers

            var forWine = 0.4 * x;
            var grape = forWine * y;
            var wine = grape / 2.5;

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