advent-of-code VS advent-of-code

Click here for a solution which will predict the humidity and other values, in all directions you can think of! You'll be able to use the water from the oasis, and predict when exactly it'll be salty enough for your taste!

Python. Part a is whatever, part 2 is pretty clean. I wonder if there's a math-only solution to this?

Python.

Python. Brute force with a tiny bit of pruning, takes about 3 minutes. I've been thinking of switching from CL for days and having the chance to use matrix multiplications finally gave me a great reason to :)

Common Lisp Truly ugly day, took me about 4 hours for part 1 and submitted more than 24h past the puzzle for the first :(

Common Lisp. Very disappointing problem since you can just brute force over even unreasonable bounds quickly. Would have been more appropriate as a day 4 or 5 problem

Common Lisp. Christ this was a sad day. I probably had part 1 in 40 minutes (or I would have if emacs didn't start hanging which necessitated a huge apt-get update/apt-get upgrade 40 minutes in), but then I got hung up until ~3hrs by the "padding" stuff and trying to parse more than one root-level packet from the string. Uggghhh.

Simple Dijkstra's in Common Lisp, though I can think of a good heuristic to use with A*. Took me like 10 minute to find a priority queue lib I liked, and about another 15 to figure out I needed to initialize it with a predicate of #'< instead of #'= :/

Common Lisp. Pretty bad day, stumbled around for like an hour trying to actually construct the strings for part B and then finished in like 10 mins once I realized how to take the better approach :/

Common Lisp. Pretty ugly, I could have merged fold-left and fold-up and the printing logic leaves something to be desired

Common Lisp. Got bit really hard twice today, on part a by not knowing that equalp compares strings case-insensitively (wtf!?) and on part b by speedreading and thinking that all small caves could be revisited on a single path