diff --git a/src/aoc2024/Day03.kt b/src/aoc2024/Day03.kt
index 2540a39..4035dee 100644
--- a/src/aoc2024/Day03.kt
+++ b/src/aoc2024/Day03.kt
@@ -26,13 +26,14 @@ xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5)
 """
 
     fun part1(input: List<String>): Int {
-        return "mul\\(([0-9]+),([0-9]+)\\)".toRegex().findAll(input.joinToString("")).map { it.groupValues[1].toInt() * it.groupValues[2].toInt() }.sum()
+        return "mul\\((\\d+),(\\d+)\\)".toRegex().findAll(input.joinToString(""))
+            .sumOf { it.groupValues[1].toInt() * it.groupValues[2].toInt() }
     }
 
     fun part2(input: List<String>): Int {
-        val unp = input.joinToString("")
-        val proc = unp.replace("(don't\\(\\).*?)+do\\(\\)".toRegex(), "")
-        return "mul\\(([0-9]+),([0-9]+)\\)".toRegex().findAll(proc).map { it.groupValues[1].toInt() * it.groupValues[2].toInt() }.sum()
+        return "mul\\((\\d+),(\\d+)\\)".toRegex()
+            .findAll(input.joinToString("").replace("(don't\\(\\).*?)+do\\(\\)".toRegex(), ""))
+            .sumOf { it.groupValues[1].toInt() * it.groupValues[2].toInt() }
     }
 
     // test if implementation meets criteria from the description, like: