import math

name = input()
budget = float(input())
bottles_beer = int(input())
paquets_chips = int(input())

price_beer = bottles_beer * 1.20
percentage = price_beer * 0.45
price_chips = math.ceil(paquets_chips * percentage)

total_price = price_beer + price_chips

if total_price <= budget:
    print(f"{name} bought a snack and has {budget - total_price:.2f} leva left.")
else:
    print(f"{name} needs {total_price - budget:.2f} more leva!")