[mjp94]

Agreed. I definitely found D much easier than C. Was able to get C small after a failed attempt, but never stood a chance at getting C large.

[RookToH7]

The odd thing is, though, I still don't really see how you can solve C-small without solving C-large at the same time (other than actual brute-force). Guess I'll be keeping my eyes peeled for the write-up.

[pedrosorio]

"other than actual brute-force"

[pedrosorio]

To be fair, C large has the biggest score of all subproblems.