aoc-2022

Hardest Problems

So far:

1. Day 16
2. Day 19
3. Day 17
4. Day 22

Notes

Day 7

Quite uncomfortable to do in Rust due to parent relationship (hello LinkedList!).

Day 11

Beautiful puzzle!

Day 16

First tricky puzzle this year. Initial (naive) solution for part 1 took ~24 seconds to compute the answer. The optimized version (different algorithm) runs in just ~300 ms.

Day 17

Part 2 is quite tricky as well but it's a beautiful puzzle.

Day 19

Similar to day 16, also hard. Part 2 was rather unusual for AoC but actually quite interesting.

Day 21

Funniest plot twist ever! Nice puzzle.

Day 22

Ended up hard-coding the wrapping logic... very ugly but it works.

Day 23

Much easier than previous days. We're coming to the end.

Day 24

Great puzzle! Took me a while to realize that you cannot stay at the current position if a blizzard wants to take your position in the next round.