05. Fishing Boat

# 1. наем -> зависи от сезона
# 2. отстъпки спрямо броя хора
# 3. допълнителна отстъпка
# 4. проверка за бюджета

budget = int(input())
season = input() # "Spring", "Summer", "Autumn" или "Winter";
fishers_count = int(input())

# наем
rent = 0
if season == 'Spring':
    rent = 3000
elif season == 'Summer' or season == 'Autumn':
    rent = 4200
elif season == 'Winter':
    rent = 2600

# намаление
if fishers_count <= 6:
    rent = rent - 0.10 * rent # 0.9 * rent
elif 7 <= fishers_count <= 11:
    rent = rent - 0.15 * rent # 0.85 * rent
else:
    rent = rent - 0.25 * rent # 0.75 * rent

# допълнително намаление
if fishers_count % 2 == 0 and not season == 'Autumn':
    rent = rent - 0.05 * rent # 0.95 * rent

# проверка за бюджета
if budget >= rent:
    left_money = budget - rent
    print(f'Yes! You have {left_money:.2f} leva left.')
else:
    need_money = rent - budget
    print(f'Not enough money! You need {need_money:.2f} leva.')