From 68ccdaaaddf5882e44b86cb803a77e49ee28ff4c Mon Sep 17 00:00:00 2001
From: kirbylife <kirbylife@protonmail.com>
Date: Tue, 3 Dec 2024 00:47:17 -0600
Subject: [PATCH] Day 3 part 1

---
 day-3/script.sh | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 day-3/script.sh

diff --git a/day-3/script.sh b/day-3/script.sh
new file mode 100644
index 0000000..899a8b9
--- /dev/null
+++ b/day-3/script.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+regex="mul\(([0-9]{1,3}),([0-9]{0,3}))"
+
+acc=0
+while read line; do
+    if [[ $line =~ $regex ]] then
+        n1=${BASH_REMATCH[1]}
+        n2=${BASH_REMATCH[2]}
+        acc=$(expr $n1 \* $n2 + $acc)
+    fi
+done <<< $(grep -Eo $regex input.txt)
+echo $acc