using System;

namespace PetShop
{
    class Program
    {
        static void Main(string[] args)
        {
            int dogs = int.Parse(Console.ReadLine());
            int otherDogs = int.Parse(Console.ReadLine());

            double dogsPrice = 2.5;
            int otherDogsPrice = 4;


            int dogPrice = dogs * price;
            double otherDogsPrice = otherDogs * price;
            double  allprice = dogsPrice + otherDogsPrice;


        }
    }
}