Add solution 16. Referred official solution.
LZCS-G580-Mint16|Terminal
Add non-working solution 17.
LZCS-G580-Mint16|Terminal
Add official solution 17.
LZCS-G580-Mint16|Terminal
Add the last solution 18. The official solution looks a lot better, which however I can't fully understand.
LZCS-G580-Mint16|Terminal