01. Christmas Sweets

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

namespace _01.Christmas_Sweets
{
    class Program
    {
        static void Main(string[] args)
        {
            double baklavaPrice = double.Parse(Console.ReadLine());
            double muffinPrice = double.Parse(Console.ReadLine());
            double shtolenKG = double.Parse(Console.ReadLine());
            double candyKG = double.Parse(Console.ReadLine());
            int biscuitsKG = int.Parse(Console.ReadLine());

            double shtolenPrice = baklavaPrice + baklavaPrice * 0.60;
            double shtolenSum = shtolenKG * shtolenPrice;

            double candyPrice = muffinPrice + muffinPrice * 0.80;
            double candySum = candyKG * candyPrice;

            double biscuitSum = biscuitsKG * 7.50;

            double finalSum = shtolenSum + candySum + biscuitSum;

            Console.WriteLine($"{finalSum:F2}");
        }
    }
}