using System;

class MainClass {
  public static void Main (string[] args)
  {
    double inheritance = double.Parse(Console.ReadLine());
    int year = int.Parse(Console.ReadLine());
    double counter = 0;
     double totalSpent = 0;

    for (int i = 1800; i <= year; i++)
    {
      counter++;
      double yearsAddition = 50 * (18 + (counter/2));
      double evenYear = 12000;
      double oddYear = 12000 + yearsAddition;

      if (i % 2 != 0)
      {
        totalSpent += oddYear;
      }
      else
      {
        totalSpent += evenYear;
      }
    }
    if (inheritance >= totalSpent)
    {
      Console.WriteLine($"Yes! He will live a carefree life and will have {(inheritance - totalSpent):F2} dollars left.");
    }
    else
    {
      Console.WriteLine($"He will need {Math.Abs(inheritance - totalSpent):F2} dollars to survive.");
    }
  }
}