Easter Lunch

using System;

namespace EasterLunch
{
    class Program
    {
        static void Main(string[] args)
        {
            int easterBread = int.Parse(Console.ReadLine());
            int eggPack = int.Parse(Console.ReadLine());
            int cookies = int.Parse(Console.ReadLine());

            double sum = easterBread * 3.2 + eggPack * 4.35 + cookies * 5.4 + eggPack * 0.15 * 12;


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