using System;

public class Program

{

    public static void Main()

    {

        var broi=double.Parse(Console.ReadLine());

        var vid=Console.ReadLine();

        var na4in=Console.ReadLine();

        double cena=1;

        if(vid=="9X13")

           {cena=broi*0.16; if(broi>=50) cena=cena*0.95; if(na4in=="online") cena=cena*0.98;}

        else {if(vid=="10X15"){cena=broi*0.16; if(broi>=80) cena=cena*0.97; if(na4in=="online") cena=cena*0.98;}

              else {if(vid=="13X18") {cena=broi*0.38; if(broi<=100&&broi>=50) cena=cena*0.97; else {if(broi>100) cena=cena*0.95;} if(na4in=="online") cena=cena*0.98;}

                    else {if(vid=="20X30"){cena=broi*2.90;if(broi>10&&broi<=50) cena=cena*0.93; else if(broi>50) cena=cena*0.91;

                                           //Console.WriteLine(cena); 

                                          if(na4in=="online") cena=cena*0.98; }

                         }

                   }

             }

             //if(na4in=="online") cena=cena*0.98;

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

             }

             }