using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _02.DreamItem
{
    class DreamItem
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            string[] splitInput = input.Split('\\');
            string month = splitInput[0];
            decimal moneyPerHour = Convert.ToDecimal(splitInput[1]);
            decimal hoursPerDay = Convert.ToDecimal(splitInput[2]);
            decimal itemPrize = Convert.ToDecimal(splitInput[3]);

            int deysInMonth = 0;

            switch (month)
            {
                case "Jan": deysInMonth = 31; break;
                case "Feb": deysInMonth = 28; break;
                case "Mar": deysInMonth = 31; break;
                case "Apr": deysInMonth = 30; break;
                case "May": deysInMonth = 31; break;
                case "June": deysInMonth = 30; break;
                case "July": deysInMonth = 31; break;
                case "Aug": deysInMonth = 31; break;
                case "Sept": deysInMonth = 30; break;
                case "Oct": deysInMonth = 31; break;
                case "Nov": deysInMonth = 30; break;
                case "Dec": deysInMonth = 31; break;
            }

            decimal deysWorking = deysInMonth - 10;
            decimal sellary = deysWorking * moneyPerHour * hoursPerDay;

            if (sellary > 700)
            {
                sellary += sellary * 0.1M;//sellary + ((sellary * 10) / 100);
            }

            decimal totalMoney = sellary - itemPrize;
            if (totalMoney >= 0)
            {
                Console.WriteLine("Money left = {0:F2} leva.", Math.Abs(sellary - itemPrize));
            }
            else
            {
                Console.WriteLine("Not enough money. {0:F2} leva needed.", Math.Abs(sellary - itemPrize));
            }
        }
    }
}