using System;

​

namespace ConsoleApp88

{

    class Program

    {

        static void Main(string[] args)

        {

            int x = int.Parse(Console.ReadLine());// kv metri lozq

            double y = double.Parse(Console.ReadLine());//grozde za kv metur

            int z = int.Parse(Console.ReadLine());// nujni litri vino 

            int br = int.Parse(Console.ReadLine());// broi rabotnici

            double Wine;

            double grape;

                // obshot grozde

            double grape = x * y;

            // vino 

            double Wine  = 0.40 * grape /2.5;

            if (Wine => z)

            {

                Console.WriteLine("Good harvest this year! Total wine: " + Math.Floor(Wine) +" liters. "+Math.Ceiling( Wine - z) +" liters left -> " + Math.Ceiling(Vino - z)/ br + " liters per person.");

            }

            else if (Wine < z)

            {

                Console.WriteLine("It will be a tough winter! More " + Math.Floor(z - Wine) + " liters wine needed.");

            }

​

        }

        }

    }