Write an algorythm described below


You live in a remote settlement where bread sellers come through periodically at irregular

intervals. Whenever you buy fresh bread, it lasts for 30 days until it becomes too stale to eat.

Your family eats one loaf of bread per day.

You are given a calendar of when the bread sellers will be visiting over the coming days and the

price each bread seller will charge per loaf. You currently have 10 fresh loaves, and at the end

of the calendar you'll get a bunch of free bread, so you won't need to have any left on hand.

Write a function that tells you how much bread to buy from each of the sellers


total_days, an integer, the number of days in the calendar until the free bread arrives

sellers, a list of pairs of integers (day, price). Each pair represents one bread seller

The day is how many days from the start until the seller arrives

The price is the price to buy each loaf of bread from this seller, in pennies


purchases, a list of integers of the same length as sellers. Each integer is how many

loaves you should buy from each seller

Or None, if there is no solution that does not force your family to eat stale bread at some point

You should output the purchase plan that minimizes the total cost. In case of ties, output the

plan that requires buying from the fewest number of different sellers, and within those choose

the plan that buys more bread earlier


Please write a well formatted, easily readable python function

calculate_purchasing_plan(total_days, sellers) in a file called

[login to view URL] that solves this problem using only the standard python (i.e. no packages


Please include a comment at the top of the file with your name and email as well as a short

paragraph describing why the algorithm you’ve provided should work.


>>> calculate_purchasing_plan(60, [(10,200), (15,100), (35,500), (50,30)])

[5, 30, 5, 10]

Kemahiran: Python, Algoritma

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( 3 ulasan ) london, United Kingdom

ID Projek: #21996128

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Buy cheap bread. Only enough to survive. Don't waste it. ---- The full solution would be provided if the job would be accepted.

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