diff --git a/Depth-First Search/DepthFirstSearch.playground/Edge.o b/Depth-First Search/DepthFirstSearch.playground/Edge.o
new file mode 100644
index 000000000..ab1e89b3a
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diff --git a/Depth-First Search/DepthFirstSearch.playground/Graph.o b/Depth-First Search/DepthFirstSearch.playground/Graph.o
new file mode 100644
index 000000000..dde35fb0f
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diff --git a/Depth-First Search/DepthFirstSearch.playground/Node.o b/Depth-First Search/DepthFirstSearch.playground/Node.o
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index 000000000..1090b3a9c
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diff --git a/swift-algorithm-club.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/swift-algorithm-club.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 000000000..18d981003
--- /dev/null
+++ b/swift-algorithm-club.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -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>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/swift-algorithm-club.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings b/swift-algorithm-club.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
new file mode 100644
index 000000000..08de0be8d
--- /dev/null
+++ b/swift-algorithm-club.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>
+	<false/>
+</dict>
+</plist>