Imagine that a company is having trouble assuring its bills are paid on time. An effective solution will
calculate all money owed to vendors, track the due date for payments, and issue payments to the five largest vendors to be received on time.

calculate the money due to the first half of the alphabet and immediately pay all money due to them in full.

calculate all money owed to vendors, track the due date for payments, and issue payments to all vendors to be received on time.

calculate the total amount due and immediately pay the largest amounts.