BackToThePast

import java.util.Scanner;

public class P04_BackToThePast {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        double money = Double.parseDouble(scan.nextLine());
        int year = Integer.parseInt(scan.nextLine());

        int age = 18;
        for (int i = 1800; i <= year; i++) {

            if(i % 2 == 0){
                money -= 12000;
            } else {
                // money -= 12000 + 50 * (18 + i - 1800);
                money -= 12000 + 50 * age;
            }
            age++;
        }

        if(money >= 0){
            System.out.printf("Yes! He will live a carefree life and will have %.2f dollars left.", money);
        } else {
            System.out.printf("He will need %.2f dollars to survive.", Math.abs(money));
        }

    }
}