TRIP IN THE PAST

using System;

public class Program
{
    public static void Main()
    {
        double money = double.Parse(Console.ReadLine());
        int year = int.Parse(Console.ReadLine());
        int age = 18;

        for (int yearnow = 1800; yearnow <= year; yearnow++)
        {
            if (yearnow % 2 == 0)
            {
                money -= 12000;
            }
            else
            {
                money -= 12000+ 50 * age;
            }
            age++;
        }
        if (money > 0)
        {
            Console.WriteLine ("Yes! He will live a carefree life and will have {0:F2} dollars left.", money);
        }
        else
        {
            Console.WriteLine ("He will need {0:F2} dollars to survive.", Math.Abs(money));
        }
    }
}