using System;

namespace Problem_03.Flowers
{
    class Program
    {
        static void Main()
        {
            int Hriz = int.Parse(Console.ReadLine());
            int Roses = int.Parse(Console.ReadLine());
            int Lal = int.Parse(Console.ReadLine());
            string Season = Console.ReadLine();
            string Holiday = Console.ReadLine();
            var sumFlowers = Hriz + Roses + Lal;

            var HrizPrice = 0.0;
            var RosesPrice = 0.0;
            var LalPrice = 0.0;

            if (Season == "Spring" || Season =="Summer")
            {
                HrizPrice = Hriz * 2.00;
                RosesPrice = Roses * 4.10;
                LalPrice = Lal * 2.5;
            }
            else if (Season == "Autumn" || Season == "Winter")
            {
                HrizPrice = Hriz * 3.75;
                RosesPrice = Roses * 4.50;
                LalPrice = Lal * 4.15;
            }
            var sum = HrizPrice + RosesPrice + LalPrice;

            if (Holiday == "Y")
            {
                sum *= 1.15;
            }
            if (Season == "Spring" && Lal >= 7)
            {
                sum *= 0.95;
            }
            if (Season == "Winter" && Roses >= 10)
            {
                sum *= 0.9;
            }
            if (sumFlowers >= 20)
            {
                sum *= 0.8;
            }
            Console.WriteLine("{0:f2}", sum + 2);
        }
    }
}