legacy_money = float(input())
year_to_be_lived = int(input())
y = 18
sum = legacy_money

for i in range(1800,year_to_be_lived):
        if i % 2 == 0:
                legacy_money = legacy_money - 12000
      #  y+=1

        if i % 2 == 1:
                legacy_money = legacy_money - (12000 + y *50)
        y +=1

if legacy_money > 0 :
        print(f"Yes! He will live a carefree life and will have {legacy_money:.2f} dollars left.")
else:
        print(f"he will need {-(legacy_money):.2f} dollars to survive.")