08. Pet Shop

using System;

namespace Nums1_10
{
    class Program
    {
        static void Main(string[] args)
        {
            int dogsNumber = int.Parse(Console.ReadLine());
            int otherAnimals = int.Parse(Console.ReadLine());

            double price1 = dogsNumber * 2.5;
            double price2 = otherAnimals * 4;
            double finalPrice = price1 + price2;

            Console.WriteLine($"{finalPrice} lv.");

        }
    }
}