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Advent of Code 2019 - Day 20

#2019#advent-of-code
bjorng

bjorng

Erlang Core Team

Advent of Code 2019 - Day 20

Note: This topic is to talk about Day 20 of the Advent of Code 2019.

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sasajuric

sasajuric

Author of Elixir In Action

I found today a bit finicky. Here’s my solution. Takes about 2 seconds for part 2.

1
Post #3
ferd

ferd

Author of Property-Based Testing with PropEr, LYSE, & Erlang in Anger

Nah, I believe I was careful with label order. I’ve been looking at found an issue with my labels and skipping, which I fixed to work the first example, but now fails the second…

I’ve ended up doing the second example by hand (twice!), and agreed with my code in a way that disagreed with their map. I then put my input for part 1 in the box and it passed.

So the way I counted things didn’t match the second example that can reach AA -> ZZ in 58 steps, it did it in 59, same as my code. I’m still not too sure what was going on, but I’ll try the rest later for part 2.

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