07. Alcohol_market, Python

wiskey_lv = float(input())
bier_liters = float(input())
wine_liters = float(input())
rakia_liters = float(input())
wiskey_liters = float(input())

rakia_price = wiskey_lv / 2
wine_price = rakia_price * (1 - 0.4)
bier_price = rakia_price * (1 - 0.8)

bill = (wiskey_liters * wiskey_lv) + (rakia_price * rakia_liters) + (wine_price * wine_liters) + ( bier_liters * bier_price)

print(f'{bill:.2f}')