using System;

​

public class Program

{

    public static void Main()

    {

        var snimki = int.Parse(Console.ReadLine());

        var tip = Console.ReadLine();

        var tipPoruchka = Console.ReadLine();

    double ednoParche = 0;

        double otstupka = 1;

        if (tip == "9X13")

        {

            ednoParche = 0.16;

            if (snimki >= 50)

            {

                otstupka = 0.95;

            }

        }

        else if (tip == "10X15")

        {

            ednoParche = 0.16;

            if (tip >= 80)

            {

                otstupka = 0.97;

            }

        }

        else if (tip == "13X18")

        {

            ednoParche = 0.38;

            if (tip >= 50 && otstupka <= 100)

            {

                otstupka = 0.97;

            }

​

            if (tip > 100)

            {

                otstupka = 0.95;

            }

        }

        else if (tip == "20X30")

        {

            ednoParche = 2.90;

            if (tip >= 10 && otstupka <= 50)

            {

                otstupka = 0.93;

            }

​

            if (tip > 50)

            {

                otstupka = 0.91;

            }

        }

​

        double sum = snimki * ednoParche * otstupka;

        if (tipPoruchka == "online")

        {

            sum = snimki * ednoParche * otstupka * 0.98;

        }

​

        Console.WriteLine("{0:f2}BGN", sum);

    }

}