On code optimisation
As organisations move towards more automation, those that use Windows-based environments encourage learning PowerShell. Our organisation is one of these. This morning, we received a challenge:
Before you leave for the holidays, the Elves in Accounting just need you to fix your expense report (your puzzle input); apparently, something isn’t quite adding up.
Specifically, they need you to find the two entries that sum to 2020 and then multiply those two numbers together.