From 2139311bb1dd3b9ef7d26da8e76f781a0370b4bd Mon Sep 17 00:00:00 2001
From: Sebastian Seedorf <mail@sebse.de>
Date: Mon, 14 Dec 2020 12:13:39 +0100
Subject: [PATCH] Day 14 (minified)

---
 day14/part2-minified.py | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 day14/part2-minified.py

diff --git a/day14/part2-minified.py b/day14/part2-minified.py
new file mode 100644
index 0000000..7eba026
--- /dev/null
+++ b/day14/part2-minified.py
@@ -0,0 +1,4 @@
+import re;l=(x.strip()for x in open("input.txt"));m={}
+def c(r, s=0):yield from (i for it in((0,1)if r[0]=='X'else(int(r[0]),))for i in c(r[1:],s*2+it))if len(r)else[s]
+for k in l:s,match=(re.match(r"mask = (.+)",k)or(0,s))[1],re.match(r"mem\[(.+)] = (.+)",k);addr,dec=match and list(map(int,match and match.groups()))or(-1,0);m={**m,**{x:dec for x in(c([(a if b=='0'else b)for a,b in zip(format(addr,'036b'),s)])if addr!=-1else[])}}
+print(sum(m.values()))