BackToThePast

using System;
class BackToThePast
{
    static void Main()
    {
        double Heratage = double.Parse(Console.ReadLine());
        int year = int.Parse(Console.ReadLine());

        for (int i = 1800; i <= year; i++)
        {
            if (i % 2 == 0)
            {
                Heratage = Heratage - 12000;
            }
            else
            {
                Heratage = Heratage - (12000 + (18 + (i - 1800)) * 50);
            }
        }
        if (Heratage > 0)
        {
            Console.WriteLine("Yes! He will live a carefree life and will have {0:f2} dollars left.", Heratage);
        }
        else
        {
            Console.WriteLine("He will need {0:f2} dollars to survive.", Math.Abs(Heratage));
        }
    }
}