using System;

public class Program

{

    public static void Main()

    {

         int r,total=0,adult,kids;

            for(int i=1;i<=1;i++)

            { 

                r=int.Parse(Console.ReadLine());

             adult=int.Parse(Console.ReadLine());

             kids = int.Parse(Console.ReadLine()); 

                if (r == 1)

                   total=adult*40+kids*20;

                else if (r == 2)

                    total=adult*25+kids*20;

                else if(r==3)

                    total=adult*60+kids*31;

                Console.WriteLine(total);   

             }

    }

}