Learning Resources>Coding Challenges

Avent of Code 2020 - Day 23

#2020#advent-of-code
Papey

Papey

Avent of Code 2020 - Day 23

This topic is about Day 23 of the Advent of Code 2020 .

Thanks to @egze, we have a private leaderboard:
https://adventofcode.com/2020/leaderboard/private/view/39276

The join code is:
39276-eeb74f9a

11 comments
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bjorng

bjorng

Erlang Core Team

Getting rid of the back links reduced the running time from 80 seconds to 40 seconds on my computer as well as simplifying the code. I didn’t bother doing any more optimizations.

My implementation takes 22 seconds on my machine, so I’m interested if anyone got good performance without resorting to native code.

I have not tried it myself, but I would expect that using the atomics module would give a nice speedup.

3
Post #10
bjorng

bjorng

Erlang Core Team

That is 2.7 seconds on my computer. Nice! :+1: :rocket:

2
Post #11

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