using System;

namespace Shoes
{
    class Program
    {
        static void Main(string[] args)
        {
            // 2 вида обувки - 3 вида цветове (червен, син и черен)
            // цената / спортни и елегнантни/ цената на спортните е 6,90 лв, а 4,20 на елегантните

            // ако си купат едни спротни и едни елегантни получват 20 % of totral price
            // if you buy one red and one blue from the elegant ones and also one sport from any colour you will get 6.9 % discount
            // if you buy in total 10 pairs of shoes u get 35%

            // input : quantity and colour and model
            // output: total price

            //input quantity
            int quantity = int.Parse(Console.ReadLine());
            string model = "";
            string colour = "";
            int counterSportShoes = 0;
            int counterElegantShoes = 0;
            int totalQuantity = 0;
            double priceSport = 6.90;
            double priceElegant = 4.20;
            double totalPrice = 0;
            int counterRed = 0;
            int counterBlue = 0;

            for (int i = 1; i <= quantity; i++)
            {
                //input model and colour
                model = Console.ReadLine();
                colour = Console.ReadLine();
                if (model == "sport")
                {
                    totalPrice += priceSport;
                    if (colour == "blue")
                    {
                        totalQuantity++;
                        counterSportShoes++;
                    }
                    else if (colour == "red")
                    {
                        totalQuantity++;
                        counterSportShoes++;
                    }
                    else if (colour == "black")
                    {
                        totalQuantity++;
                        counterSportShoes++;
                    }
                }
                else if (model == "elegant")
                {
                    totalPrice += priceElegant;
                    if (colour == "blue")
                    {
                        totalQuantity++;
                        counterElegantShoes++;
                        counterBlue++;
                    }
                    else if (colour == "red")
                    {
                        totalQuantity++;
                        counterElegantShoes++;
                        counterRed++;
                    }
                    else if (colour == "black")
                    {
                        totalQuantity++;
                        counterElegantShoes++;
                    }
                }

            }
            // ако си купат едни спротни и едни елегантни получват 20 % of totral price
            if (counterElegantShoes == 1 && counterSportShoes == 1)
            {
                totalPrice -= totalPrice * 0.20;
            }
            // if you buy one red and one blue from the elegant ones and also one sport from any colour you will get 6.9 % discount
            if (counterElegantShoes == 2 && counterSportShoes == 1)
            {
                if (counterRed == 1 && counterBlue == 1)
                {
                    totalPrice -= totalPrice * 0.069;
                }
            }
            // if you buy in total 10 pairs of shoes u get 35%
            if (totalQuantity == 10)
            {
                totalPrice -= totalPrice * 0.35;
            }
            //print on the console the final price
            Console.WriteLine($"{totalPrice}");




            //int quantity = int.Parse(Console.ReadLine());
            //string colour1 = Console.ReadLine();
            //string colour2 = Console.ReadLine();
            //string colour3 = Console.ReadLine();
            //string model1 = Console.ReadLine();
            //string model2 = Console.ReadLine();
            //double priceSport = quantity * 6.90;
            //double priceElegant = quantity * 4.20;
            //double totalPrice = 0;

            //if (model1 == "Sport" && model2 == "Elegant")
            //{
            //    if (quantity == 2)
            //    {
            //        priceElegant = priceElegant * 0.8;
            //        priceSport = priceSport * 0.8;
            //        totalPrice = priceElegant + priceSport;
            //    }

            //}
            //else if (colour1 == "red" && colour2 == "blue" && model1 == "Elegant" && quantity == 3)
            //{

            //    totalPrice = priceSport + priceElegant;
            //    totalPrice = totalPrice * 0.9655;

            //}
            //else if (model2 == "Sport" && colour3 == "black" || colour1 == "red" || colour2 == "blue" || model1 == "Elegant" && quantity == 3);
            //{
            //    totalPrice = priceSport + priceElegant;
            //    totalPrice = totalPrice * 0.9655;

            //}

            //Console.WriteLine(totalPrice);
        }
    }
}