Ancestors

Written by CameronDev@programming.dev on 2024-12-24 at 06:00

🤖 - 2024 DAY 24 SOLUTIONS - 🤖

https://programming.dev/post/23243817

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Toot

Written by Gobbel2000@programming.dev on 2024-12-25 at 09:49

Rust + Pen and Paper

Yikers. Part 2 took a while, staring at this diagram for hours. Eventually I noticed that each of these blocks has two pairs of (XOR, AND) gates sharing the same inputs (and inputs aren’t changed). So I matched up these pairs based on a distance metric of how much needs to be swapped to fit together. This helped me identify 4 blocks with errors, the rest was solved using pen and paper (one block is missing as it became apparent at that point):

There is also some code, but do yourself and me a favor and don’t look at it. While it does turn up the correct solution, it probably won’t with any other input, especially not the examples.

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Descendants