using System;

namespace BackToThePast
{
    class Program
    {
        static void Main(string[] args)
        {
            //input money inherited and last year
            //ivancho age = 18
            //ivancho startyear = 1800 / 18 years old
            //if year % 2 == 0 ivancho spends 12000
            //else if year % 2 == ivancho spends 12000 + 50 * ivancho age
            //sum money spend for the years
            //will the money be enough
            //output

            double moneyInherited = double.Parse(Console.ReadLine());
            int lastYear = int.Parse(Console.ReadLine());

            int ivanchoAge = 18;
            double moneySpend = 0;

            for (int i = 1800; i <= lastYear; i++)
            {
                if (i % 2 == 0)
                {
                    moneySpend += 12000;
                }
                else if (i % 2 == 1)
                {
                    moneySpend += 12000 + 50 * ivanchoAge;
                }

                ivanchoAge += 1;
            }

            if (moneyInherited >= moneySpend)
            {
                Console.WriteLine($"Yes! He will live a carefree life and will have {moneyInherited - moneySpend:f2} dollars left.");
            }
            else
            {
                Console.WriteLine($"He will need {moneySpend - moneyInherited:f2} dollars to survive.");
            }
        }
    }
}