🎄 Advent of Code 2021 🎄

I decided to stick with Rust this year and try to improve a bit on it, I basically haven't used it since last year's AoC, so you could say I'm a bit RUSTy with it 🥶.

I'm not going to shoot for the leaderboard, the goal is getting all the 50 ⭐ while learning and having fun.

Not only that, but I'll try my best to get every ⭐ within 24 hours of the puzzle release.

❄️ How to use ❄️

cargo run -p day* - Runs a specific day

cargo test -p day* - Tests a specific day

cargo test - Tests all

🥛 Results 🍪

Day	Part 1 Time	Part 1 Rank	Part 1 Runtime1	Part 2 Time	Part 2 Rank	Part 2 Runtime1
1	00:13:19	5740	19.5µs	00:21:33	5187	20.7µs
2	02:31:32	25070	88.2µs	02:35:27	23492	76.4µs
3	02:55:11	26333	47.2µs	03:33:14	18066	345.3µs
4	04:07:12	15365	172.3µs	04:28:18	14328	313.7µs
5	03:56:48	15828	3.4ms	04:54:06	16137	1.7ms
6	02:33:47	17752	5.6µs	02:42:10	13212	5µs
7	02:31:57	19790	59.8µs	02:45:38	18822	26.5µs
8	02:38:27	17947	89.4µs	05:38:06	14742	972.8µs
9	02:58:36	17499	321.9µs	06:26:57	18828	506.1µs
10	03:05:07	16485	78.9µs	03:36:15	16034	99.1µs
11	03:46:34	11792	246.8µs	03:51:13	11638	791.1µs
12	03:07:44	9230	10.4ms	03:15:37	8001	305.5ms
13	04:32:34	15680	115.8µs	04:43:22	14882	217.9µs
14	15:42:54	33616	88.7µs	17:25:35	27071	308.2µs
15	04:28:42	10779	934.3µs	04:46:01	7905	29.5ms
16	04:58:17	7848	584.7µs	05:15:25	6812	619.9µs
17	04:06:21	9486	1.3µs	04:29:30	8571	7.2ms
18	05:40:34	4227	7.8ms	05:47:09	4084	121.4ms
19	07:12:39	3059	6.2s	07:27:54	2924	6.5s
20	04:31:02	6289	432.9µs	04:45:42	6149	19.8ms
21	03:35:39	8620	6.2µs	04:23:48	4697	12.4ms
22	03:31:10	6787	174.4ms	04:11:45	2500	19.5ms
23	02:53:05	2630	650.3ms	06:52:28	2545	570.3ms
24	05:34:14	2117	1.1s2	05:43:03	2059	13.5s2
25	03:02:52	4016	60.0ms	03:03:34	2721	---

🎅 Have a Wonderful Holiday Season, Everyone! 🎅

Footnotes

1. cargo run -p day* --release, does not include the reading of the input file but includes parsing. ↩ ↩²

2. This was solved on paper, the code isn't well written or optimized. ↩ ↩²