Bones

AdventOfCode2023.FSharp/AdventOfCode2023.FSharp.Bench/Inputs.fs

@@ -14,6 +14,6 @@ module Inputs =
             if isNull dir then
                 failwith "reached root of filesystem without finding inputs dir"
 
-        Array.init 15 (fun day -> Path.Combine (dir.FullName, "inputs", $"day%i{day + 1}.txt") |> File.ReadAllText)
+        Array.init 16 (fun day -> Path.Combine (dir.FullName, "inputs", $"day%i{day + 1}.txt") |> File.ReadAllText)
 
     let inline day (i : int) = days.[i - 1]

AdventOfCode2023.FSharp/AdventOfCode2023.FSharp.Bench/Program.fs

@@ -57,6 +57,23 @@ module Benchmarks =
         [<GlobalCleanup>]
         member _.Cleanup () = Run.shouldWrite <- true
 
+    type Benchmark16To20 () =
+        [<GlobalSetup>]
+        member _.Setup () = Run.shouldWrite <- false
+
+        [<Params(16)>]
+        member val Day = 0 with get, set
+
+        [<Params(false, true)>]
+        member val IsPartOne = false with get, set
+
+        [<Benchmark>]
+        member this.Benchmark () : unit =
+            Run.allRuns.[this.Day - 1] (not this.IsPartOne) (Inputs.day this.Day)
+
+        [<GlobalCleanup>]
+        member _.Cleanup () = Run.shouldWrite <- true
+
 module Program =
 
     [<EntryPoint>]

AdventOfCode2023.FSharp/AdventOfCode2023.FSharp.Bench/Run.fs

@@ -209,6 +209,18 @@ module Run =
             if shouldWrite then
                 Console.WriteLine output
 
+    let day16 (partTwo : bool) (input : string) =
+        if not partTwo then
+            let output = Day16.part1 input
+
+            if shouldWrite then
+                Console.WriteLine output
+        else
+            let output = Day16.part2 input
+
+            if shouldWrite then
+                Console.WriteLine output
+
     let allRuns =
         [|
             day1
@@ -226,4 +238,5 @@ module Run =
             day13
             day14
             day15
+            day16
         |]

AdventOfCode2023.FSharp/AdventOfCode2023.FSharp.Lib/AdventOfCode2023.FSharp.Lib.fsproj

@@ -26,6 +26,7 @@
     <Compile Include="Day13.fs" />
     <Compile Include="Day14.fs" />
     <Compile Include="Day15.fs" />
+    <Compile Include="Day16.fs" />
   </ItemGroup>
 
 </Project>

AdventOfCode2023.FSharp/AdventOfCode2023.FSharp.Lib/Day16.fs

@@ -0,0 +1,15 @@
+namespace AdventOfCode2023
+
+open System
+open System.Globalization
+
+[<RequireQualifiedAccess>]
+module Day16 =
+
+    let part1 (s : string) =
+        use lines = StringSplitEnumerator.make '\n' s
+        answer
+
+    let part2 (s : string) =
+        use lines = StringSplitEnumerator.make '\n' s
+        answer

AdventOfCode2023.FSharp/AdventOfCode2023.FSharp/Program.fs

@@ -300,6 +300,22 @@ module Program =
             Console.WriteLine (part2.ToString ())
             Console.Error.WriteLine ((1_000.0 * float sw.ElapsedTicks / float Stopwatch.Frequency).ToString () + "ms")
 
+        Console.WriteLine "=====Day 16====="
+
+        do
+            let input = Path.Combine (dir.FullName, "day16.txt") |> File.ReadAllText
+
+            sw.Restart ()
+            let part1 = Day16.part1 input
+            sw.Stop ()
+            Console.WriteLine (part1.ToString ())
+            Console.Error.WriteLine ((1_000.0 * float sw.ElapsedTicks / float Stopwatch.Frequency).ToString () + "ms")
+            sw.Restart ()
+            let part2 = Day16.part2 input
+            sw.Stop ()
+            Console.WriteLine (part2.ToString ())
+            Console.Error.WriteLine ((1_000.0 * float sw.ElapsedTicks / float Stopwatch.Frequency).ToString () + "ms")
+
         endToEnd.Stop ()
 
         Console.Error.WriteLine (

AdventOfCode2023.FSharp/Test/Test.fsproj

@@ -24,6 +24,7 @@
     <Compile Include="TestDay13.fs" />
     <Compile Include="TestDay14.fs" />
     <Compile Include="TestDay15.fs" />
+    <Compile Include="TestDay16.fs" />
     <EmbeddedResource Include="samples\day1.txt"/>
     <EmbeddedResource Include="samples\day1part1.txt"/>
     <EmbeddedResource Include="samples\day2.txt"/>
@@ -42,6 +43,7 @@
     <EmbeddedResource Include="samples\day13.txt" />
     <EmbeddedResource Include="samples\day14.txt" />
     <EmbeddedResource Include="samples\day15.txt" />
+    <EmbeddedResource Include="samples\day16.txt" />
   </ItemGroup>
 
   <ItemGroup>

AdventOfCode2023.FSharp/Test/TestDay16.fs

@@ -0,0 +1,46 @@
+namespace AdventOfCode2023.Test
+
+open AdventOfCode2023
+open NUnit.Framework
+open FsUnitTyped
+open System.IO
+
+[<TestFixture>]
+module TestDay16 =
+
+    [<Test>]
+    let sample = Assembly.getEmbeddedResource typeof<Dummy>.Assembly "day16.txt"
+
+    [<Test>]
+    let part1Sample () =
+        sample |> Day16.part1 |> shouldEqual 1320
+
+    [<Test>]
+    let part2Sample () =
+        sample |> Day16.part2 |> shouldEqual 145ul
+
+    [<Test>]
+    let part1Actual () =
+        let s =
+            try
+                File.ReadAllText (Path.Combine (__SOURCE_DIRECTORY__, "../../inputs/day16.txt"))
+            with
+            | :? DirectoryNotFoundException
+            | :? FileNotFoundException ->
+                Assert.Inconclusive ()
+                failwith "unreachable"
+
+        Day16.part1 s |> shouldEqual 521434
+
+    [<Test>]
+    let part2Actual () =
+        let s =
+            try
+                File.ReadAllText (Path.Combine (__SOURCE_DIRECTORY__, "../../inputs/day16.txt"))
+            with
+            | :? DirectoryNotFoundException
+            | :? FileNotFoundException ->
+                Assert.Inconclusive ()
+                failwith "unreachable"
+
+        Day16.part2 s |> shouldEqual 248279ul