diff --git a/day3/part1.ts b/day3/part1.ts
new file mode 100644
index 0000000..279a0bc
--- /dev/null
+++ b/day3/part1.ts
@@ -0,0 +1,8 @@
+export async function solve() {
+    const input = await Deno.readTextFile("./input.txt");
+    let sum = 0;
+    for (const match of input.matchAll(/mul\((\d{1,3}),(\d{1,3})\)/g)) {
+        sum += +match[1] * +match[2];
+    }
+    return sum
+}
\ No newline at end of file
diff --git a/day3/part2.ts b/day3/part2.ts
new file mode 100644
index 0000000..698a37a
--- /dev/null
+++ b/day3/part2.ts
@@ -0,0 +1,10 @@
+export async function solve() {
+    const input = await Deno.readTextFile("./input.txt");
+    let sum = 0;
+    for (const part of input.split("do()").slice(1).map(e => e.split("don't()")[0])) {
+        for (const match of part.matchAll(/mul\((\d{1,3}),(\d{1,3})\)/g)) {
+            sum += +match[1] * +match[2];
+        }
+    }
+    return sum
+}
\ No newline at end of file