Fruit market - EX

strowberry_price = float(input())
bananas_kg = float(input())
oranges_kg = float(input())
raspberry_kg = float(input())
strowberry_kg = float(input())

raspberry_price = strowberry_price / 2
oranges_price = raspberry_price - (raspberry_price * 0.40)
bananas_price = raspberry_price - (raspberry_price * 0.80)

raspberry_sum = raspberry_price * raspberry_kg
oranges_sum = oranges_kg * oranges_price
bananas_sum = bananas_kg * bananas_price
strowberry_sum = strowberry_kg * strowberry_price

money_needed = strowberry_sum + raspberry_sum + oranges_sum + bananas_sum
print(money_needed)