using System;

namespace RageExspressnes
{
    class Program
    {
        static void Main(string[] args)
        {
            int lostGamesCount = int.Parse(Console.ReadLine());
            float headsetPrice = float.Parse(Console.ReadLine());
            float mousePrice = float.Parse(Console.ReadLine());
            float keyboardPrice = float.Parse(Console.ReadLine());
            float displayPrice = float.Parse(Console.ReadLine());

            int countOfHeadsets = lostGamesCount / 2;
            int countOfMouses = lostGamesCount / 3;
            int countOfKeyboards = lostGamesCount / 6;
            int countOfDisplays = countOfKeyboards / 2;

            float totalPrice = countOfHeadsets * headsetPrice + countOfMouses * mousePrice + countOfKeyboards * keyboardPrice+countOfDisplays*displayPrice;
            Console.WriteLine($"Rage expenses: {totalPrice:f2} lv.");
        }
    }
}