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

namespace FitnesEquipmentt
{
    class Program
    {




        static void Main(string[] args)
        {


            var v = int.Parse(Console.ReadLine());
            var finalPrice = 0.0m;

            for (int i = 0; i < v; i++)
            {
                var equipment = Console.ReadLine();


                switch (equipment)
                {

                    case  "exercise bike":
                        finalPrice += 1789;
                        break;
                    case "treadmill":
                        break;
                    case "cross trainer":
                        break;
                    case "dumbbells":
                        break;



                }






            }
            Console.WriteLine("{0:0.00}",finalPrice);


        }
    }
}