Solutions for Advent of Code
Anders Englöf Ytterström
178d96494a
Revenge, blast from the past etc! Had to learn Dijkstra's for this one. Was as stuck as one can be on AOC. This stopped my progress 2023, and kept me busy at least 20-30h this year (2024) as well. I never came past part 1, but got part 2 in minutes when I hit home. Turns out the initial queue was to blame, after studying Dijkstras, reading hints on the subreddit and tutorials in blogs. I was off-by-1 in costs, since I misplaced a read from the grid. I also struggled a really, really long time with a bug where I resetted the steps to aggresively. What helped me to figure it out was to create simpler test case grids and step-debug them. Example 1: 241 321 should give a least heat loss of 6 in pt1. Example 2: 11199 12199 99199 99131 99111 should give a least heat loss of 9 in pt2. |
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| 2015-elixir | ||
| 2015-elixir-2 | ||
| 2015-python | ||
| 2016-python | ||
| 2016-python2 | ||
| 2017-python | ||
| 2018-elixir | ||
| 2018-python | ||
| 2019-elixir | ||
| 2020-elixir | ||
| 2020-python | ||
| 2021-elixir | ||
| 2021-python | ||
| 2022-elixir | ||
| 2023-python | ||
| 2024-python | ||
| leaderboard | ||
| .gitignore | ||
| fetch-calendar | ||
| fetch-input | ||
| README.md | ||
Advent of Code 2015–
Here all solved puzzles for Advent of Code are kept for reference. Most solutions are written in Python, but there are also solutions written in Elixir.
- Initial runs from 2016–2020 are squashed in version control, so the original thoughts/rants about the solution are forgotten for future generations.
- 2021 onwards, each solution will have a separate commit. This also includes revisiting old events.
Where are the puzzle input files?
For many years, this repository had all puzzle inputs under version control. They are not anymore, although the scripts asumed they are downloaded and stored locally in a subdirectory, which is ignored by version control.
The reasons:
- Neither you or me do have permission to reproduce or redistribute them, they are not released under public domain or MIT/BSD/GPL or any other license.
- The author behind advent of code have kindly asked us who attend Advent of Code to not release them, since publiced puzzle inputs cen be used to copy the site and steal the AoC creator's work.
Sources: