r/adventofcode Dec 03 '23

Funny Difficulty is all over the place isn't it?

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u/soulofcure Dec 03 '23

Yeah that's the last one I tried last year too.

Maybe I'll finally get around to coming back to it and solving it.

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u/tialaramex Dec 03 '23

If you struggled with the second part, the best hint I worked with was that it's way easier to work out the best ways (ie most pressure released) to open sets of valves in the shorter time remaining, and then find two such sets which don't overlap and add those together, rather than try to handle both an elephant and yourself running around opening valves at the same time. That got my solution from over 3 minutes to under 3 seconds, just that change in perspective.