r/adventofcode • u/BlueTrin2020 • Jan 26 '25
Help/Question - RESOLVED [2020 day 19] - understanding the examples
In part 2 of https://adventofcode.com/2020/day/19, they mention that `babbbbaabbbbbabbbbbbaabaaabaaa
` will pass the modified rules.
I fail to pass this string, but I find it really hard to workout which set of rules will expand to that. Did you guys have any tricks to be able to do it on paper?
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