01. Back To The Past

# 01. Back To The Past

gift_money = float(input())
need_money_1 = 0
need_money_2 = 0
years = 18
last_year = int(input())
last_year_1 = 1800
for i in range(1800, last_year +1):
    if last_year_1 % 2 == 0:
        need_money_2 += 12000
        years += 1
        last_year_1 += 1
    else:
        need_money_1 += 12000 + (50 * years)
        years += 1
        last_year_1 += 1

end_money = gift_money - (need_money_1 + need_money_2)
if end_money >= 0:
    print(f"Yes! He will live a carefree life and will have {end_money:.2f} dollars left.")
else:
    print(f"He will need {abs(end_money):.2f} dollars to survive.")