From 3555be54c2abb8d5ece008a60dbdfbde0ffbddd7 Mon Sep 17 00:00:00 2001
From: Alex Pickering <alex@cogarr.net>
Date: Fri, 7 Feb 2025 12:49:48 -0600
Subject: inital commit

---
 03/1.lua | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 03/1.lua

(limited to '03/1.lua')

diff --git a/03/1.lua b/03/1.lua
new file mode 100644
index 0000000..b9a97a3
--- /dev/null
+++ b/03/1.lua
@@ -0,0 +1,26 @@
+#!/usr/bin/env lua
+require("ext")
+local sacks = {}
+local common = {}
+for line in io.lines() do
+	local compart_1 = {}
+	for i = 1,(#line/2) do
+		compart_1[line:sub(i,i)] = true
+	end
+	for i = (#line/2+1), #line do
+		local sb = line:sub(i,i)
+		if compart_1[sb] then
+			table.insert(common,sb)
+			break
+		end
+	end
+end
+local sum = 0
+for _, p in pairs(common) do
+	if p >= 'a' and p <= 'z' then
+		sum = sum + (p:byte() - ('a'):byte() + 1)
+	elseif p >= 'A' and p <= 'Z' then
+		sum = sum + (p:byte() - ('A'):byte() + 1) + 26
+	end
+end
+print(sum)
-- 
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