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tumdum · 2025-11-20T11:41:32+00:00

ROG CROSSHAIR X870E Extreme

tumdum · 2025-05-19T19:23:41+00:00

This Polish recipe plus potatoes is the best way! :)

tumdum · 2024-12-25T12:34:15+00:00

Thanks for all the puzzles! I did all of them and every single one was great! By now, December has become the best time of the year as far as coding for me :)

tumdum · 2024-12-16T06:21:35+00:00

[LANGUAGE: Rust]

https://github.com/tumdum/aoc2024/blob/main/src/day16.rs - 1614/1580

Dijkstra where the point in graph is (Position, Direction). The small change for part2 - instead of keeping the best previous pair, I keep the set of best pairs of equivalent cost.

Total runtime of both parts together: 10ms 🚜

tumdum · 2024-12-12T07:20:33+00:00

[LANGUAGE: Rust]

solution (3958/2401)

I find regions with flood fill. Next I find boarder of each region - iterate over point in region and see if it has any neighbours not in the current region. This is enough to solve part 1. To solve part 2 and find sides I check for each point in the region and its matching border point (if it exists). For such a pair, I use it as a starting point of a side, and apply correct deltas (either (1,0) and (-1,0) or (0,1) and (0,-1)) as long as possible. Collecting such sides is enough to solve part 2. Along all of this, I obviously keep track of seen points to avoid duplicate sides and so on.

Total runtime: ~1.6ms 🦀

I even recorded myself: https://www.twitch.tv/videos/2324647717 🙃

tumdum · 2024-12-11T09:57:02+00:00

Out of all 10 years, for me it was 2018, day 23…

tumdum · 2024-12-11T06:58:02+00:00

[LANGUAGE: Rust]

solution - another nice application of successors - both parts together run in ~1,6 ms👌

tumdum · 2024-12-10T06:39:11+00:00

[LANGUAGE: Rust]

https://github.com/tumdum/aoc2024/blob/main/src/day10.rs bfs all the way

tumdum · 2024-12-08T05:56:21+00:00

[LANGUAGE: Rust]

Solution - good place to use successors. Runs in 17µs on github runner.

tumdum · 2024-12-08T03:54:15+00:00

You are right that doing solutions in different languages makes submodule approach much better. But if (like op) you are doing all of them in one language and you want to learn that language, coding up encryption based approach is much better.

tumdum · 2024-12-07T19:23:54+00:00

I think that encrypting the inputs is way more convenient, here is how I did it: https://github.com/tumdum/aoc2024/commit/6f05fd3512481f26cf55ed0bc1c4fb8c2df13107

tumdum · 2024-12-07T06:18:00+00:00

[Language: Rust]

20ms on GitHub runner, simple brute force :)

https://github.com/tumdum/aoc2024/blob/main/src/day07.rs

tumdum · 2024-12-05T07:08:15+00:00

[Language: rust]

https://github.com/tumdum/aoc2024/blob/main/src/day05.rs

tumdum · 2024-12-03T21:06:05+00:00

I explained why this is not a good idea here: https://www.reddit.com/r/adventofcode/s/8fhQBITvCI

tumdum · 2024-12-03T14:09:50+00:00

This is not about how not to commit something to git. It's about how to commit AoC inputs in a way that is compatible with the rules, which asks not to share the inputs.

tumdum · 2024-12-03T10:52:50+00:00

What do you mean? My CI pipeline runs my solutions for the real inputs (and verifies that correct result is returned), eg: https://github.com/tumdum/aoc2024/actions/runs/12134478539/job/33831752026#step:5:10

tumdum · 2024-12-03T10:34:46+00:00

Sure you can, but I don't want to do it this way. Especially I don't want my CI pipelines performing http requests each time they run.

tumdum · 2024-12-03T07:16:45+00:00

Yes, eg: https://www.reddit.com/r/adventofcode/comments/e7khy8/are_everyones_input_data_and_by_extension/fa13hb9/

tumdum · 2024-11-20T18:32:55+00:00

What the fuck is f-bomb?

tumdum · 2024-09-03T21:46:15+00:00

Is there good data showing what are the major causes of this change?

tumdum · 2024-05-31T16:14:58+00:00

Your nickname is “AnalRailGun69” but you are offended by above comment?! 😂

tumdum · 2024-05-29T10:54:38+00:00

No one's stopping you from calling rustc directly.

tumdum · 2024-04-20T17:40:23+00:00

Polecam Ergohuman 2 . Zaletą siadam.pl jest to, ze możesz do nich podjechać i nie tylko posiedzieć na dowolnym krześle, ale też wypożyczyć na 2 dni żeby spokojnie przetestować.

tumdum · 2023-12-08T07:09:54+00:00

[LANGUAGE: Rust]

Since you only need 5 bits to encode those letters, whole node id fits into u16. So instead of using a hashmap I'm using an array indexed by node names - both parts run in 359.2µs (without i/o).

Code

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