diff --git a/2017/src/main/scala/Day05.scala b/2017/src/main/scala/Day05.scala
index 301ccff4..dafd03b0 100644
--- a/2017/src/main/scala/Day05.scala
+++ b/2017/src/main/scala/Day05.scala
@@ -6,14 +6,14 @@ object Day05 extends App:
   val day: String =
     this.getClass.getName.filter(_.isDigit).mkString("")
 
-  val jumps: Array[Int] =
+  val jumps: Vector[Int] =
     Source
       .fromResource(s"input$day.txt")
       .getLines
       .map(_.trim.toInt)
-      .toArray
+      .toVector
 
-  case class CPU(mem: Array[Int], update: Int => Int, pc: Int = 0, steps: Int = 0):
+  case class CPU(mem: Vector[Int], update: Int => Int, pc: Int = 0, steps: Int = 0):
     @tailrec
     final def run: CPU =
       mem.lift(pc) match
@@ -22,18 +22,12 @@ object Day05 extends App:
         case Some(offset) =>
           CPU(mem.updated(pc, update(offset)), update, pc + offset, steps + 1).run
 
-  val start1: Long =
-    System.currentTimeMillis
-
-  val answer1: Int =
-    CPU(jumps, offset => offset + 1).run.steps
+  val start1: Long = System.currentTimeMillis
+  val answer1: Int = CPU(jumps, offset => offset + 1).run.steps
 
   println(s"Answer AOC 2017 day $day part 1: $answer1 [${System.currentTimeMillis - start1}ms]")
 
-  val start2: Long =
-    System.currentTimeMillis
-
-  val answer2: Int =
-    CPU(jumps, offset => if offset >= 3 then offset - 1 else offset + 1).run.steps
 
+  val start2: Long = System.currentTimeMillis
+  val answer2: Int = CPU(jumps, offset => if offset >= 3 then offset - 1 else offset + 1).run.steps
   println(s"Answer AOC 2017 day $day part 2: $answer2 [${System.currentTimeMillis - start2}ms]")
diff --git a/2021/src/main/scala/Day09.scala b/2021/src/main/scala/Day09.scala
index bc4cf9ed..e0acdc2e 100644
--- a/2021/src/main/scala/Day09.scala
+++ b/2021/src/main/scala/Day09.scala
@@ -72,4 +72,4 @@ object Day09 extends App:
       .take(3)
       .product
 
-  println(s"Answer AOC 2020 day $day part 2: $answer2 [${System.currentTimeMillis - start2}ms]")
+  println(s"Answer AOC 2021 day $day part 2: $answer2 [${System.currentTimeMillis - start2}ms]")
diff --git a/2021/src/main/scala/Day10.scala b/2021/src/main/scala/Day10.scala
index 023f9060..a62f8a92 100644
--- a/2021/src/main/scala/Day10.scala
+++ b/2021/src/main/scala/Day10.scala
@@ -45,7 +45,7 @@ object Day10 extends App:
       .values
       .sum
 
-  println(s"Answer AOC 2020 day $day part 1: $answer1 [${System.currentTimeMillis - start1}ms]")
+  println(s"Answer AOC 2021 day $day part 1: $answer1 [${System.currentTimeMillis - start1}ms]")
 
   def incompletes(s: String): List[Char] =
     def loop(todo: List[Char], stack: List[Char] = List.empty[Char]): List[Char] =
@@ -83,4 +83,4 @@ object Day10 extends App:
 
     scores(scores.length / 2)
 
-  println(s"Answer AOC 2020 day $day part 1: $answer2 [${System.currentTimeMillis - start2}ms]")
+  println(s"Answer AOC 2021 day $day part 1: $answer2 [${System.currentTimeMillis - start2}ms]")
diff --git a/2021/src/main/scala/Day19.scala b/2021/src/main/scala/Day19.scala
index 035ad9f9..2f584992 100644
--- a/2021/src/main/scala/Day19.scala
+++ b/2021/src/main/scala/Day19.scala
@@ -74,12 +74,12 @@ object Day19 extends App:
   val start1   = System.currentTimeMillis
   val (beacons, positions) = solve(scanners)
   val answer1 = beacons.size
-  println(s"answer 1: $answer1 [${System.currentTimeMillis - start1}ms]")
+  println(s"Answer AOC 2021 day $day part 1: $answer1 [${System.currentTimeMillis - start1}ms]")
 
   
   val start2  = System.currentTimeMillis
   val answer2 = (for a <- positions ; b <- positions yield Vec3.distance(b, a)).max
-  println(s"answer 2: $answer2 [${System.currentTimeMillis - start2}ms]")
+  println(s"Answer AOC 2021 day $day part 2: $answer2 [${System.currentTimeMillis - start2}ms]")
 
 
   
diff --git a/2021/src/main/scala/Day21.scala b/2021/src/main/scala/Day21.scala
index 5f8cd776..fa8c9b08 100644
--- a/2021/src/main/scala/Day21.scala
+++ b/2021/src/main/scala/Day21.scala
@@ -50,7 +50,7 @@ object Day21 extends App:
 
   val start1  = System.currentTimeMillis
   val answer1 = solve1(game1)
-  println(s"answer 1: $answer1 [${System.currentTimeMillis - start1}ms]")
+  println(s"Answer AOC 2021 day $day part 1: $answer1 [${System.currentTimeMillis - start1}ms]")
 
 
   case class Pawn(pos: Int, score: Int = 0):
@@ -92,4 +92,4 @@ object Day21 extends App:
 
   val start2 = System.currentTimeMillis
   val answer2 = solve2(Pawn(pos = 7), Pawn(pos = 9))
-  println(s"answer 2: $answer2 [${System.currentTimeMillis - start2}ms]")
+  println(s"Answer AOC 2021 day $day part 2: $answer2 [${System.currentTimeMillis - start2}ms]")
diff --git a/2021/src/main/scala/Day22.scala b/2021/src/main/scala/Day22.scala
index f8af5b62..a8b55648 100644
--- a/2021/src/main/scala/Day22.scala
+++ b/2021/src/main/scala/Day22.scala
@@ -82,7 +82,7 @@ object Day22 extends App:
 
   val start1  = System.currentTimeMillis
   val answer1 = Cuboid.reboot(cuboidSteps).all.values.count(identity)
-  println(s"answer 1: $answer1 [${System.currentTimeMillis - start1}ms]")
+  println(s"Answer AOC 2021 day $day part 1: $answer1 [${System.currentTimeMillis - start1}ms]")
 
 
   case class Cube(min: Pos, max: Pos): 
@@ -145,4 +145,4 @@ object Day22 extends App:
   
   val start2  = System.currentTimeMillis
   val answer2 = Cube.reboot(cubeSteps)
-  println(s"answer 2: $answer2 [${System.currentTimeMillis - start2}ms]")
+  println(s"Answer AOC 2021 day $day part 2: $answer2 [${System.currentTimeMillis - start2}ms]")
diff --git a/2022/src/main/scala/Day12.scala b/2022/src/main/scala/Day12.scala
index b689d02c..5c84575b 100644
--- a/2022/src/main/scala/Day12.scala
+++ b/2022/src/main/scala/Day12.scala
@@ -1,5 +1,4 @@
 import scala.io.Source
-import scala.util.Try
 
 object Day12 extends App:
 
@@ -105,7 +104,7 @@ object Day12 extends App:
       distTo(from) = 0
       val sourceDist = (from, distTo(from))
       val sortByDist: Ordering[(Vertex, Int)] = (a, b) => a._2.compareTo(b._2)
-      val queue = mutable.PriorityQueue[(Vertex, Int)](sourceDist)(using sortByDist)
+      val queue = mutable.PriorityQueue[(Vertex, Int)](sourceDist)(using sortByDist.reverse)
 
       while (queue.nonEmpty) {
         val (minDestV, _) = queue.dequeue()
diff --git a/build.sbt b/build.sbt
index 011568ff..9c44afcb 100644
--- a/build.sbt
+++ b/build.sbt
@@ -39,7 +39,7 @@ lazy val aoc2022 = project.in(file("2022"))
 lazy val aoc2023 = project.in(file("2023"))
 lazy val aoc2024 = project.in(file("2024"))
 
-lazy val root = (project in file("."))
+lazy val aoc = (project in file("."))
   .aggregate(
     aoc2015,
     aoc2016,