Day 18/25: Boiling Boulders | Advent of Code 2022 Explanations

[@joaodiasconde]

The @lru_cache is called a python decorator, because it is a Decorator Design Pattern approach to extend functionality. Very nice!

[@WilliamYFeng]

Thanks for the clarification!

[@jdavis2581]

Did I miss day 16 and 17 somewhere?