фф

using System;

namespace k
{
    class Program
    {
        static void Main(string[] args)
        {
            double priceStrawberries = double.Parse(Console.ReadLine());

            double quantityBanana = double.Parse(Console.ReadLine());
            double quantityOrange = double.Parse(Console.ReadLine());
            double quantityRasberries = double.Parse(Console.ReadLine());
            double quantityStrawberries = double.Parse(Console.ReadLine());

            double priceRasberries = ((priceStrawberries *1/ 2))* quantityRasberries;
            double priceOrange = priceRasberries - ((priceRasberries* 0.40)) * quantityOrange;
            double priceBanana = priceRasberries - ((priceRasberries * 0.80)) * quantityBanana;
            double totalPriceStrawberries = quantityStrawberries * priceStrawberries;

            double finalSum = priceRasberries + priceBanana +priceOrange+ totalPriceStrawberries;
            Console.WriteLine($"{finalSum:f2}");
        }
    }
}