You can only just peek over the mk5 belts as a normal height person.

This is part of my ACU factory. Slopes can give the illusion that I know what I'm doing.

Are you going to stop and wait or keep on going anyway?

It's not that I don't like power poles. I just don't like them inside. Wall attachments are also fine, but then everything would need to be near a wall.

I don't always like the idea of single big buildings, several buildings feels more industrial to me. I tried to make it fairly walkable.

I also realised that after finishing it, that I also need to send the output to a train to take to a future plant for Modular Engines, but I didn't leave any space for the train.

I just liked the framing.

36 refineries to supply 36 fully over-clocked Fuel Gens. This is only the last step.

Should give me enough power for a while tho.

It's nice to finally have a manufacturer so that I can automate the 3 items recipes, it was getting annoying having to do them at the bench.

Ignore the mess in the background, I'm working on it.

Some other stuff has been re-sized or model swapped as well.

Would have been nice to have mk2 pipes, but I don't have enough power to get there yet. Dipping into the bio fuel just to keep things running.

So I managed to get part 1 of the day, but it took 2 seconds to run on the real input, which is a bad sign.

I can't see any kind of optimisation that means I can skip checks and know how many combinations are in those skipped checks (aside from 0.) I can bail out of branches of combinations if the info so far won't fit, but that still leads me to visiting every valid combination which in one of the examples is 500k. (And probably way more in the input, since if I can't complete the example near instantly the input is not happening.)

Right now I take the string, then replace the first instance of a ? with the two possible options. Check it matches the check digits so far then use recursion on those two strings.

I can try to optimise the matching, but I don't think that solves the real problem of visiting every combination.

I don't think (or hope) it's just bad code but this is my code so far (python.)

edit: ::: spoiler spoiler a cache was the solution! :::