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Manually solving the input with your brain
Last year there was the graph one that was easiest to solve by drawing the graph and manually solving.
And one of the early ones could be done by hand with some mild effort, I did it in excel.
⇌+@A×4+5˜⊂0+3⊂0[+1⊸˙×2]Do I still reach level 3 if I use my own AoC library I wrote over the years?
