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[2024 day 24] - Pt2 - Manual Inspection?
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this post was submitted on 24 Dec 2024
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Advent Of Code
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I also solved part2 manually today, by outputting the correct addition and program output in binary and then reversing the path for all wrong outputs.
Then I just had to compare that to the formulas for a full adder and I found my swaps pretty quickly that way.
I did all of this in Kotlin and on paper, with a handy helper method to construct the paths.
It's at the very bottom of this file on Github.
I suspect that comparing the bits and then comparing the paths to the full adder formulas can also be done 'automatically' decently easily, but I was too lazy to implement that today.