cooking_masterclass

from math import ceil

budget = float(input())
students = int(input())
flour_price = float(input())
egg_price = float(input())
apron_price = float(input())

total_flour = flour_price * students - students // 5 * flour_price

total_eggs = 10 * egg_price * students

total_aprons = ceil(students* 1.2) * apron_price

total_sets = total_flour + total_eggs + total_aprons

if budget >= total_sets:
    print(f'Items purchased for {total_sets:.2f}$.')
else:
    print(f'{total_sets - budget:.2f}$ more needed.')