2 files changed, 55 insertions, 0 deletions

diff --git a/prog/aoc/23/3/1.py b/prog/aoc/23/3/1.py
new file mode 100755
index 0000000..fce4aa9
--- /dev/null
+++ b/prog/aoc/23/3/1.py
@@ -0,0 +1,45 @@
+#!/usr/bin/python3
+parts = {}
+numbers = []
+ln = 0
+try:
+	while True:
+		l = input() + "."
+		i = 0
+		num = ""
+		for c in l:
+			if not c.isdigit():
+				if num != "":
+					numbers.append((int(num), ln, i-len(num)))
+					num = ""
+				if not c == ".":
+					parts[(ln, i)] = c
+			if c.isdigit():
+				num += c
+			i += 1
+		ln += 1
+except:
+	gears = {}
+	sum = 0
+	sumgears = 0
+	for number in numbers:
+		did = False
+		for char in range(len(str(number[0]))+2):
+			presek = set([(number[1], number[2]-1+char), (number[1]-1, number[2]-1+char), (number[1]+1, number[2]-1+char)]) & set(parts.keys());
+			if len(presek):
+				if not did:
+					sum += number[0]
+					did = True
+				if len(presek) != 1:
+					print("unreachable")
+				part = [x for x in presek][0]
+				if parts[part] == "*":
+					if part not in gears:
+						gears[part] = []
+					gears[part].append(number[0])
+	for pair in gears.values():
+		if len(pair) != 2:
+			continue
+		sumgears += pair[0]*pair[1]
+	print(sum)
+	print(sumgears)
diff --git a/prog/aoc/23/3/in.txt b/prog/aoc/23/3/in.txt
new file mode 100644
index 0000000..b20187f
--- /dev/null
+++ b/prog/aoc/23/3/in.txt
@@ -0,0 +1,10 @@
+467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..