Prep for 3

.gitignore

@@ -1,3 +1,4 @@
+.idea/
 ### https://raw.github.com/github/gitignore/cdd9e946da421758c6f42c427c7bc65c8326155d/Global/macOS.gitignore
 
 # General
@@ -6,7 +7,8 @@
 .LSOverride
 
 # Icon must end with two \r
-Icon
+Icon
+
 
 # Thumbnails
 ._*

1.swift

@@ -1,28 +0,0 @@
-var depths: [Int] = []
-
-while let line = readLine() {
-    depths.append(Int(line)!)
-}
-
-var total = 0
-
-for i in 1..<depths.count {
-    if depths[i - 1] < depths[i] {
-        total += 1
-    }
-}
-
-print("a:", total)
-
-var prev = 1000000
-total = 0
-
-for i in 1..<depths.count - 2 {
-    let new = depths[i..<i + 3].reduce(0, +)
-
-    if new > prev {
-        total += 1
-    }
-    prev = new
-}
-print("b:", total0

AoC.xcodeproj/project.pbxproj

@@ -6,15 +6,84 @@
 	objectVersion = 55;
 	objects = {
 
+/* Begin PBXBuildFile section */
+		C6615EEB27582F13004CE48D /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = C6615EEA27582F13004CE48D /* main.swift */; };
+		C6615EF627583238004CE48D /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = C6615EF527583238004CE48D /* main.swift */; };
+		C6E4F9052759CCE4001C8B49 /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = C6E4F9042759CCE4001C8B49 /* main.swift */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		C6615EE627582F13004CE48D /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = /usr/share/man/man1/;
+			dstSubfolderSpec = 0;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 1;
+		};
+		C6615EF127583238004CE48D /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = /usr/share/man/man1/;
+			dstSubfolderSpec = 0;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 1;
+		};
+		C6E4F9002759CCE4001C8B49 /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = /usr/share/man/man1/;
+			dstSubfolderSpec = 0;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 1;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
 /* Begin PBXFileReference section */
-		C6615EE227582D4C004CE48D /* 1.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = 1.swift; sourceTree = "<group>"; };
+		C6615EE827582F13004CE48D /* AoC1 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = AoC1; sourceTree = BUILT_PRODUCTS_DIR; };
+		C6615EEA27582F13004CE48D /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
+		C6615EF327583238004CE48D /* AoC2 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = AoC2; sourceTree = BUILT_PRODUCTS_DIR; };
+		C6615EF527583238004CE48D /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
+		C6E4F9022759CCE4001C8B49 /* AoC3 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = AoC3; sourceTree = BUILT_PRODUCTS_DIR; };
+		C6E4F9042759CCE4001C8B49 /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
+		C6E4F9092759CDDE001C8B49 /* .gitignore */ = {isa = PBXFileReference; lastKnownFileType = text; path = .gitignore; sourceTree = SOURCE_ROOT; };
 /* End PBXFileReference section */
 
+/* Begin PBXFrameworksBuildPhase section */
+		C6615EE527582F13004CE48D /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		C6615EF027583238004CE48D /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		C6E4F8FF2759CCE4001C8B49 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
 /* Begin PBXGroup section */
 		C6615ECF27582D09004CE48D = {
 			isa = PBXGroup;
 			children = (
-				C6615EE227582D4C004CE48D /* 1.swift */,
+				C6615EE927582F13004CE48D /* AoC1 */,
+				C6615EF427583238004CE48D /* AoC2 */,
+				C6E4F9032759CCE4001C8B49 /* AoC3 */,
+				C6E4F9092759CDDE001C8B49 /* .gitignore */,
 				C6615ED927582D09004CE48D /* Products */,
 			);
 			sourceTree = "<group>";
@@ -22,12 +91,93 @@
 		C6615ED927582D09004CE48D /* Products */ = {
 			isa = PBXGroup;
 			children = (
+				C6615EE827582F13004CE48D /* AoC1 */,
+				C6615EF327583238004CE48D /* AoC2 */,
+				C6E4F9022759CCE4001C8B49 /* AoC3 */,
 			);
 			name = Products;
 			sourceTree = "<group>";
 		};
+		C6615EE927582F13004CE48D /* AoC1 */ = {
+			isa = PBXGroup;
+			children = (
+				C6615EEA27582F13004CE48D /* main.swift */,
+			);
+			path = AoC1;
+			sourceTree = "<group>";
+		};
+		C6615EF427583238004CE48D /* AoC2 */ = {
+			isa = PBXGroup;
+			children = (
+				C6615EF527583238004CE48D /* main.swift */,
+			);
+			path = AoC2;
+			sourceTree = "<group>";
+		};
+		C6E4F9032759CCE4001C8B49 /* AoC3 */ = {
+			isa = PBXGroup;
+			children = (
+				C6E4F9042759CCE4001C8B49 /* main.swift */,
+			);
+			path = AoC3;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
+/* Begin PBXNativeTarget section */
+		C6615EE727582F13004CE48D /* AoC1 */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = C6615EEC27582F13004CE48D /* Build configuration list for PBXNativeTarget "AoC1" */;
+			buildPhases = (
+				C6615EE427582F13004CE48D /* Sources */,
+				C6615EE527582F13004CE48D /* Frameworks */,
+				C6615EE627582F13004CE48D /* CopyFiles */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = AoC1;
+			productName = AoC1;
+			productReference = C6615EE827582F13004CE48D /* AoC1 */;
+			productType = "com.apple.product-type.tool";
+		};
+		C6615EF227583238004CE48D /* AoC2 */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = C6615EF727583238004CE48D /* Build configuration list for PBXNativeTarget "AoC2" */;
+			buildPhases = (
+				C6615EEF27583238004CE48D /* Sources */,
+				C6615EF027583238004CE48D /* Frameworks */,
+				C6615EF127583238004CE48D /* CopyFiles */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = AoC2;
+			productName = AoC2;
+			productReference = C6615EF327583238004CE48D /* AoC2 */;
+			productType = "com.apple.product-type.tool";
+		};
+		C6E4F9012759CCE4001C8B49 /* AoC3 */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = C6E4F9082759CCE4001C8B49 /* Build configuration list for PBXNativeTarget "AoC3" */;
+			buildPhases = (
+				C6E4F8FE2759CCE4001C8B49 /* Sources */,
+				C6E4F8FF2759CCE4001C8B49 /* Frameworks */,
+				C6E4F9002759CCE4001C8B49 /* CopyFiles */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = AoC3;
+			productName = AoC3;
+			productReference = C6E4F9022759CCE4001C8B49 /* AoC3 */;
+			productType = "com.apple.product-type.tool";
+		};
+/* End PBXNativeTarget section */
+
 /* Begin PBXProject section */
 		C6615ED027582D09004CE48D /* Project object */ = {
 			isa = PBXProject;
@@ -35,6 +185,17 @@
 				BuildIndependentTargetsInParallel = 1;
 				LastSwiftUpdateCheck = 1310;
 				LastUpgradeCheck = 1310;
+				TargetAttributes = {
+					C6615EE727582F13004CE48D = {
+						CreatedOnToolsVersion = 13.1;
+					};
+					C6615EF227583238004CE48D = {
+						CreatedOnToolsVersion = 13.1;
+					};
+					C6E4F9012759CCE4001C8B49 = {
+						CreatedOnToolsVersion = 13.1;
+					};
+				};
 			};
 			buildConfigurationList = C6615ED327582D09004CE48D /* Build configuration list for PBXProject "AoC" */;
 			compatibilityVersion = "Xcode 13.0";
@@ -49,10 +210,40 @@
 			projectDirPath = "";
 			projectRoot = "";
 			targets = (
+				C6615EE727582F13004CE48D /* AoC1 */,
+				C6615EF227583238004CE48D /* AoC2 */,
+				C6E4F9012759CCE4001C8B49 /* AoC3 */,
 			);
 		};
 /* End PBXProject section */
 
+/* Begin PBXSourcesBuildPhase section */
+		C6615EE427582F13004CE48D /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				C6615EEB27582F13004CE48D /* main.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		C6615EEF27583238004CE48D /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				C6615EF627583238004CE48D /* main.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		C6E4F8FE2759CCE4001C8B49 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				C6E4F9052759CCE4001C8B49 /* main.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
 /* Begin XCBuildConfiguration section */
 		C6615EDD27582D09004CE48D /* Debug */ = {
 			isa = XCBuildConfiguration;
@@ -169,6 +360,64 @@
 			};
 			name = Release;
 		};
+		C6615EED27582F13004CE48D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Manual;
+				DEVELOPMENT_TEAM = "";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		C6615EEE27582F13004CE48D /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Manual;
+				DEVELOPMENT_TEAM = "";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
+		C6615EF827583238004CE48D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		C6615EF927583238004CE48D /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
+		C6E4F9062759CCE4001C8B49 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		C6E4F9072759CCE4001C8B49 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -181,6 +430,33 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		C6615EEC27582F13004CE48D /* Build configuration list for PBXNativeTarget "AoC1" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C6615EED27582F13004CE48D /* Debug */,
+				C6615EEE27582F13004CE48D /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		C6615EF727583238004CE48D /* Build configuration list for PBXNativeTarget "AoC2" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C6615EF827583238004CE48D /* Debug */,
+				C6615EF927583238004CE48D /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		C6E4F9082759CCE4001C8B49 /* Build configuration list for PBXNativeTarget "AoC3" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C6E4F9062759CCE4001C8B49 /* Debug */,
+				C6E4F9072759CCE4001C8B49 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 /* End XCConfigurationList section */
 	};
 	rootObject = C6615ED027582D09004CE48D /* Project object */;

AoC.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEWorkspaceSharedSettings_AutocreateContextsIfNeeded</key>
+	<true/>
+</dict>
+</plist>

AoC.xcodeproj/xcshareddata/xcschemes/AoC1.xcscheme

@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1310"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "C6615EE727582F13004CE48D"
+               BuildableName = "AoC1"
+               BlueprintName = "AoC1"
+               ReferencedContainer = "container:AoC.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "YES"
+      customWorkingDirectory = "/Users/marijn/repos/AoC 2021"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "C6615EE727582F13004CE48D"
+            BuildableName = "AoC1"
+            BlueprintName = "AoC1"
+            ReferencedContainer = "container:AoC.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <CommandLineArguments>
+         <CommandLineArgument
+            argument = "1.in"
+            isEnabled = "YES">
+         </CommandLineArgument>
+      </CommandLineArguments>
+      <LocationScenarioReference
+         identifier = "com.apple.dt.IDEFoundation.CurrentLocationScenarioIdentifier"
+         referenceType = "1">
+      </LocationScenarioReference>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "C6615EE727582F13004CE48D"
+            BuildableName = "AoC1"
+            BlueprintName = "AoC1"
+            ReferencedContainer = "container:AoC.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

AoC.xcodeproj/xcshareddata/xcschemes/AoC2.xcscheme

@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1310"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "C6615EF227583238004CE48D"
+               BuildableName = "AoC2"
+               BlueprintName = "AoC2"
+               ReferencedContainer = "container:AoC.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "YES"
+      customWorkingDirectory = "/Users/marijn/repos/AoC 2021"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "C6615EF227583238004CE48D"
+            BuildableName = "AoC2"
+            BlueprintName = "AoC2"
+            ReferencedContainer = "container:AoC.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <CommandLineArguments>
+         <CommandLineArgument
+            argument = "input2.in"
+            isEnabled = "YES">
+         </CommandLineArgument>
+      </CommandLineArguments>
+      <LocationScenarioReference
+         identifier = "com.apple.dt.IDEFoundation.CurrentLocationScenarioIdentifier"
+         referenceType = "1">
+      </LocationScenarioReference>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "C6615EF227583238004CE48D"
+            BuildableName = "AoC2"
+            BlueprintName = "AoC2"
+            ReferencedContainer = "container:AoC.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

AoC.xcodeproj/xcshareddata/xcschemes/AoC3.xcscheme

@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1310"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "C6E4F9012759CCE4001C8B49"
+               BuildableName = "AoC3"
+               BlueprintName = "AoC3"
+               ReferencedContainer = "container:AoC.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "YES"
+      customWorkingDirectory = "/Users/marijn/repos/AoC 2021"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "C6E4F9012759CCE4001C8B49"
+            BuildableName = "AoC3"
+            BlueprintName = "AoC3"
+            ReferencedContainer = "container:AoC.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <CommandLineArguments>
+         <CommandLineArgument
+            argument = "input3.in"
+            isEnabled = "YES">
+         </CommandLineArgument>
+      </CommandLineArguments>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "C6E4F9012759CCE4001C8B49"
+            BuildableName = "AoC3"
+            BlueprintName = "AoC3"
+            ReferencedContainer = "container:AoC.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

AoC1/main.swift

@@ -0,0 +1,40 @@
+//
+//  main.swift
+//  AoC1
+//
+//  Created by Marijn Doeve on 01-12-2021.
+//
+
+import Foundation
+
+var depths = [Int]()
+
+let fileContent = try! String(contentsOfFile: CommandLine.arguments[1])
+for line in fileContent.components(separatedBy: .newlines) {
+    if let line = Int(line) {
+        depths.append(line)
+    }
+}
+
+var total = 0
+
+for i in 1..<depths.count {
+    if depths[i - 1] < depths[i] {
+        total += 1
+    }
+}
+
+print("a:", total)
+
+var prev = 1000000
+total = 0
+
+for i in 1..<depths.count - 2 {
+    let new = depths[i..<i + 3].reduce(0, +)
+
+    if new > prev {
+        total += 1
+    }
+    prev = new
+}
+print("b:", total)

AoC2/main.swift

@@ -0,0 +1,56 @@
+//
+//  main.swift
+//  AoC2
+//
+//  Created by Marijn Doeve on 01-12-2021.
+//
+
+import Foundation
+
+var dept = 0
+var horizontalPosition = 0
+
+let fileContent = try! String(contentsOfFile: CommandLine.arguments[1])
+for line in fileContent.trimmingCharacters(in: .newlines).components(separatedBy: .newlines) {
+    let parts = line.components(separatedBy: " ")
+    
+    let direction = parts[0]
+    let number = Int(parts[1])!
+    
+    switch direction {
+    case "forward":
+        horizontalPosition += number
+    case "down":
+        dept += number
+    case "up":
+        dept -= number
+    default: break
+    }
+}
+
+print("a:", horizontalPosition * dept)
+
+var aim = 0
+var deptB = 0
+var horizontalPositionB = 0
+
+
+for line in fileContent.trimmingCharacters(in: .newlines).components(separatedBy: .newlines) {
+    let parts = line.components(separatedBy: .whitespaces)
+    
+    let direction = parts[0]
+    let number = Int(parts[1])!
+    
+    switch direction {
+    case "up":
+        aim -= number
+    case "down":
+        aim += number
+    case "forward":
+        horizontalPositionB += number
+        deptB += aim * number
+    default: break
+    }
+}
+
+print("b:", horizontalPositionB * deptB)

AoC3/main.swift

@@ -0,0 +1,11 @@
+//
+//  main.swift
+//  AoC3
+//
+//  Created by Marijn Doeve on 03-12-2021.
+//
+
+import Foundation
+
+print("Hello, World!")
+