Day 3

Author: r0f1

README.md

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 |Exercise Description|Solution|
 |:---|:---|
-|[Day 1: Calorie Counting](https://adventofcode.com/2022/day/1)   |[py](/day01/main.py)|
-|[Day 2: Rock Paper Scissors](https://adventofcode.com/2022/day/2)|[py](/day02/main.py), [alt1](/day02/alt1.py), [alt2](/day02/alt2.py)|
+|[Day 1: Calorie Counting](https://adventofcode.com/2022/day/1)        |[py](/day01/main.py)|
+|[Day 2: Rock Paper Scissors](https://adventofcode.com/2022/day/2)     |[py](/day02/main.py), [alt1](/day02/alt1.py), [alt2](/day02/alt2.py)|
+|[Day 3: Rucksack Reorganization](https://adventofcode.com/2022/day/3) |[py](/day03/main.py)|
 
 My solutions from previous years:
 * [r0f1/adventofcode2020](https://github.com/r0f1/adventofcode2020)

day03/main.py

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+from string import ascii_letters
+from more_itertools import chunked
+
+with open("input.txt") as f:
+    lines = [x.strip() for x in f]
+
+prios = {c: i+1 for i, c in enumerate(ascii_letters)}
+print(sum(prios[(set(l[:len(l)//2]) & set(l[len(l)//2:])).pop()] for l in lines))
+print(sum(prios[(set(l1) & set(l2) & set(l3)).pop()] for l1, l2, l3 in chunked(lines, 3)))