Day 03

day03/input.txt

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day03/part1.min.py

@@ -0,0 +1,4 @@
+#!/usr/bin/env python3
+
+print(sum(map(lambda o:o-96if o>96else o-38,(ord(set(l[:len(l)//2]).intersection(set(l[len(l)//2:])).pop())for l in open("input.txt")))))
+

day03/part1.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+lines = (x.strip() for x in open("input.txt"))
+s = 0
+
+for line in lines:
+    a = set(line[:len(line)//2])
+    b = set(line[len(line)//2:])
+    i = a.intersection(b)
+    o = ord(i.pop())
+    s += o-0x60 if o > 0x60 else o-38
+
+print(s)

day03/part2.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+from itertools import chain, islice
+
+lines = (x.strip() for x in open("input.txt"))
+s = 0
+
+for line1, line2, line3 in (chain([first], islice(lines, 2)) for first in lines):
+    i = set(line1).intersection(line2).intersection(line3)
+    o = ord(i.pop())
+    s += o - 0x60 if o > 0x60 else o - 38
+
+print(s)