Solve 2018 day 21, 2020 day 12 and improve 2022 day 19

README.md

@@ -108,7 +108,8 @@ Solutions and utility script for Advent of Code challenges in Python.
 - Day 18: 24:04
 - Day 19: days, super fun, but hard for me
 - Day 20:
-- Day 21:
+- Day 21: 28:40 (16th - brute force but still not so bad)
+- Day 22:
 
 ## AoC 2019
 
@@ -146,7 +147,8 @@ Solutions and utility script for Advent of Code challenges in Python.
 - Day 9: 7:37   (choked bad)
 - Day 10: 34:27 (so weak)
 - Day 11: 21:05 (hmmm, I rally have to analyze why I am so slow)
-- Day 12:
+- Day 12: 21:52 (just slow again for an easy problem)
+- Day 13:
 
 
 ## AoC 2022
@@ -154,10 +156,6 @@ Solutions and utility script for Advent of Code challenges in Python.
 Done with this. Overall everything is solvable. It's more about consistency
 and focus. Of course, learning more algorithms and techniques helps.
 
-Possible to-dos:
-
-- [ ] Optimize day 19 because it is terrible.
-
 **Times:**
 
 - Day  1: 7:52 ... so slow brah :/ top 100 required 2:05...
@@ -184,7 +182,7 @@ Possible to-dos:
   LEADERBOARD?!?!?!?!?!?!?!
 - Day 17: Second one was fun with having to detect the repetition.
 - Day 18: 12:00 and 32:00; really straightforward and of course way too slow.
-- Day 19: Slow.
+- Day 19: Slow. (2024-09-13 improved with help from hyper neutrino.)
 - Day 20: Struggled way too much.
 - Day 21: Straightforward and relatively fast.
 - Day 22: Very hard and wasn't able to do hands free. Even the best guys took