01. Easter Lunch

using System;

namespace _2._Exam_Preparation
{
    class Program
    {
        static void Main(string[] args)
        {
            int easterBread = int.Parse(Console.ReadLine());
            int numOfEggCartons = int.Parse(Console.ReadLine());
            int kgCookies = int.Parse(Console.ReadLine());

            double expenses = 3.20 * easterBread + numOfEggCartons * 4.35 + kgCookies * 5.40;
            int numOfEggs = 12 * numOfEggCartons;
            expenses += numOfEggs * 0.15;

            Console.WriteLine($"{expenses:f2}");

        }
    }
}