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

namespace _05.Back_to_the_past
{
    class Program
    {
        static void Main(string[] args)
        {
            double will = double.Parse(Console.ReadLine());
            int year = int.Parse(Console.ReadLine());
            var age = 18;
            var evenYears = 0d;
            var moneyPerEvenYear = 12000;
            var oddYears = 0d;

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

                if (i % 2 == 0)
                {
                    evenYears += moneyPerEvenYear;
                }
                else
                {
                    var PeroddYearMoney = (12000 + 50 * age);
                    oddYears += PeroddYearMoney;
                }
                age++;
            }
            var sum = evenYears + oddYears;
            Console.WriteLine(sum <= will ? $"Yes! He will live a carefree life and will have {Math.Abs(sum - will):f2} dollars left." :
               $"He will need {sum - will:f2} dollars to survive.");
        }
    }
}