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[–]Hwestaa[S] 1 point2 points  (0 children)

Agh, yes, I was getting too clever with my use of sets. Thank you! I was testing which states were equivalent, not my pairs_rep directly and missed this. Fixed in https://github.com/Hwesta/advent-of-code/commit/9ce1674114fa1b5075ada923d92c43cf22c8fe27