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❄ - 2025 DAY 12 SOLUTIONS - ❄
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this post was submitted on 12 Dec 2025
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Advent Of Code
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An unofficial home for the advent of code community on programming.dev! Other challenges are also welcome!
Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.
Everybody Codes is another collection of programming puzzles with seasonal events.
EC 2025
AoC 2025
Solution Threads
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 |
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- Follow the programming.dev instance rules
- Keep all content related to advent of code in some way
- If what youre posting relates to a day, put in brackets the year and then day number in front of the post title (e.g. [2024 Day 10])
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I actually did a lot of optimizations before I had to give up and search what I was missing. I did have a look at my input data, but still wouldn't make the connection because in my mind, any solution had to work for the sample too.
Yeah, it's quite a mean trick really - kinda a big middle finger to anyone who does TDD