Solutions for Advent of Code
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Anders Englöf Ytterström 4a070e827b Solve 2025 day 3 pt 1-2
For the first part, I used itertools.combinations
to find the highest pairs of batteries. And as
expected, that solution did not scale well for pt 2.

I figured out that reducing batteries until the top
most 12 (and 2) remained was the correct way to go.

the _maxj(line, C) function is the hive conclusion
from the solution mega thread. I really liked this
brilliant use of a while loop to exlude batteries.

 - The first char just skip the while loop. A char
   emptying the battery list also does this.
2025-12-10 00:34:12 +01:00
2015-elixir Solve day 5-6 2015 2022-11-25 12:03:57 +01:00
2015-elixir-2 Solve 2015:7 "Some Assembly Required" 2023-11-20 20:54:43 +01:00
2015-python Add the initial 2015 days in Python 2023-12-19 23:55:47 +01:00
2016-python Add solutions from AOC 2016-2020 2021-11-01 16:45:03 +01:00
2016-python2 Solve 2016:22 p2 "Grid Computing" 2024-12-12 13:53:43 +01:00
2017-python Solve 2017:25 "The Halting Problem" 2025-05-06 23:53:56 +02:00
2018-elixir Add solutions from AOC 2016-2020 2021-11-01 16:45:03 +01:00
2018-python Add solutions from AOC 2016-2020 2021-11-01 16:45:03 +01:00
2019-elixir Add solutions from AOC 2016-2020 2021-11-01 16:45:03 +01:00
2020-elixir Add solutions from AOC 2016-2020 2021-11-01 16:45:03 +01:00
2020-python Add solutions from AOC 2016-2020 2021-11-01 16:45:03 +01:00
2021-elixir 🔧 Setup Advent of Code 2021 2021-10-22 17:17:55 +02:00
2021-python Solve 2021:14 "Extended Polymerization" part 2 2021-12-14 08:56:57 +01:00
2022-elixir Add WIP for 2022:11 "Monkey in the Middle" 2023-11-20 20:53:58 +01:00
2023-python 2023 solutions (#6) 2023-12-18 13:08:28 +01:00
2024-python Solve 2024:24 pt2 "Code Chronicle" 2025-01-05 00:06:18 +01:00
2025-python Solve 2025 day 3 pt 1-2 2025-12-10 00:34:12 +01:00
leaderboard Initiate Advent of Code 2025 2025-12-10 00:34:12 +01:00
.gitignore Ignore .ropeproject 2023-12-15 17:22:09 +01:00
fetch-calendar Add scripts to fetch single or calendar inputs 2023-12-09 21:25:35 +01:00
fetch-input Add scripts to fetch single or calendar inputs 2023-12-09 21:25:35 +01:00
README.md Update README.md 2024-11-29 11:58:57 +01:00

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 20162020 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: