From 1f7d9dad1ba942b27fc1200aafe5fa3b55b1f758 Mon Sep 17 00:00:00 2001
From: nullptroma <roman.pytkov@mail.ru>
Date: Sun, 5 Mar 2023 18:29:59 +0300
Subject: [PATCH] Fix .sln

---
 .idea/.idea.Leetcode/.idea/encodings.xml |   4 +
 .idea/.idea.Leetcode/.idea/workspace.xml | 821 ++++++++++++++++++++++-
 Leetcode.sln                             |  35 +-
 3 files changed, 805 insertions(+), 55 deletions(-)
 create mode 100644 .idea/.idea.Leetcode/.idea/encodings.xml

diff --git a/.idea/.idea.Leetcode/.idea/encodings.xml b/.idea/.idea.Leetcode/.idea/encodings.xml
new file mode 100644
index 0000000..df87cf9
--- /dev/null
+++ b/.idea/.idea.Leetcode/.idea/encodings.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
+</project>
\ No newline at end of file
diff --git a/.idea/.idea.Leetcode/.idea/workspace.xml b/.idea/.idea.Leetcode/.idea/workspace.xml
index da1e619..a3c422c 100644
--- a/.idea/.idea.Leetcode/.idea/workspace.xml
+++ b/.idea/.idea.Leetcode/.idea/workspace.xml
@@ -2,22 +2,43 @@
 <project version="4">
   <component name="AutoGeneratedRunConfigurationManager">
     <projectFile>1. Two Sum/1. Two Sum.csproj</projectFile>
+    <projectFile>101. Symmetric Tree/101. Symmetric Tree.csproj</projectFile>
     <projectFile>102. Binary Tree Level Order Traversal/102. Binary Tree Level Order Traversal.csproj</projectFile>
+    <projectFile>104. Maximum Depth of Binary Tree/104. Maximum Depth of Binary Tree.csproj</projectFile>
+    <projectFile>112. Path Sum/112. Path Sum.csproj</projectFile>
+    <projectFile>116. Populating Next Right Pointers in Each Node/116. Populating Next Right Pointers in Each Node.csproj</projectFile>
     <projectFile>118. Pascal's Triangle/118. Pascal's Triangle.csproj</projectFile>
     <projectFile>121. Best Time to Buy and Sell Stock/121. Best Time to Buy and Sell Stock.csproj</projectFile>
+    <projectFile>136. Single Number/136. Single Number.csproj</projectFile>
+    <projectFile>141. Linked List Cycle/141. Linked List Cycle.csproj</projectFile>
     <projectFile>142. Linked List Cycle II/142. Linked List Cycle II.csproj</projectFile>
+    <projectFile>144. Binary Tree Preorder Traversal/144. Binary Tree Preorder Traversal.csproj</projectFile>
+    <projectFile>145. Binary Tree Postorder Traversal/145. Binary Tree Postorder Traversal.csproj</projectFile>
     <projectFile>1480. Running Sum of 1d Array/1480. Running Sum of 1d Array.csproj</projectFile>
     <projectFile>167. Two Sum II - Input Array Is Sorted/167. Two Sum II - Input Array Is Sorted.csproj</projectFile>
     <projectFile>189. Rotate Array/189. Rotate Array.csproj</projectFile>
+    <projectFile>19. Remove Nth Node From End of List/19. Remove Nth Node From End of List.csproj</projectFile>
+    <projectFile>190. Reverse Bits/190. Reverse Bits.csproj</projectFile>
+    <projectFile>191. Number of 1 Bits/191. Number of 1 Bits.csproj</projectFile>
+    <projectFile>198. House Robber/198. House Robber.csproj</projectFile>
     <projectFile>2. Add Two Numbers/2. Add Two Numbers.csproj</projectFile>
+    <projectFile>20. Valid Parentheses/20. Valid Parentheses.csproj</projectFile>
+    <projectFile>200. Number of Islands/200. Number of Islands.csproj</projectFile>
+    <projectFile>203. Remove Linked List Elements/203. Remove Linked List Elements.csproj</projectFile>
     <projectFile>205. Isomorphic Strings/205. Isomorphic Strings.csproj</projectFile>
     <projectFile>206. Reverse Linked List/206. Reverse Linked List.csproj</projectFile>
     <projectFile>21. Merge Two Sorted Lists/21. Merge Two Sorted Lists.csproj</projectFile>
     <projectFile>217. Contains Duplicate/217. Contains Duplicate.csproj</projectFile>
+    <projectFile>226. Invert Binary Tree/226. Invert Binary Tree.csproj</projectFile>
+    <projectFile>231. Power of Two/231. Power of Two.csproj</projectFile>
+    <projectFile>232. Implement Queue using Stacks/232. Implement Queue using Stacks.csproj</projectFile>
+    <projectFile>235. Lowest Common Ancestor of a Binary Search Tree/235. Lowest Common Ancestor of a Binary Search Tree.csproj</projectFile>
     <projectFile>240. Search a 2D Matrix II/240. Search a 2D Matrix II.csproj</projectFile>
     <projectFile>242. Valid Anagram/242. Valid Anagram.csproj</projectFile>
     <projectFile>278. First Bad Version/278. First Bad Version.csproj</projectFile>
     <projectFile>283. Move Zeroes/283. Move Zeroes.csproj</projectFile>
+    <projectFile>299. Bulls and Cows/299. Bulls and Cows.csproj</projectFile>
+    <projectFile>3. Longest Substring Without Repeating Characters/3. Longest Substring Without Repeating Characters.csproj</projectFile>
     <projectFile>344. Reverse String/344. Reverse String.csproj</projectFile>
     <projectFile>35. Search Insert Position/35. Search Insert Position.csproj</projectFile>
     <projectFile>350. Intersection of Two Arrays II/350. Intersection of Two Arrays II.csproj</projectFile>
@@ -27,23 +48,41 @@
     <projectFile>392. Is Subsequence/392. Is Subsequence.csproj</projectFile>
     <projectFile>4. Median of Two Sorted Arrays/4. Median of Two Sorted Arrays.csproj</projectFile>
     <projectFile>409. Longest Palindrome/409. Longest Palindrome.csproj</projectFile>
+    <projectFile>424. Longest Repeating Character Replacement/424. Longest Repeating Character Replacement.csproj</projectFile>
+    <projectFile>438. Find All Anagrams in a String/438. Find All Anagrams in a String.csproj</projectFile>
+    <projectFile>46. Permutations/46. Permutations.csproj</projectFile>
+    <projectFile>509. Fibonacci Number/509. Fibonacci Number.csproj</projectFile>
     <projectFile>53. Maximum Subarray/53. Maximum Subarray.csproj</projectFile>
+    <projectFile>542. 01 Matrix/542. 01 Matrix.csproj</projectFile>
     <projectFile>557. Reverse Words in a String III/557. Reverse Words in a String III.csproj</projectFile>
     <projectFile>566. Reshape the Matrix/566. Reshape the Matrix.csproj</projectFile>
+    <projectFile>567. Permutation in String/567. Permutation in String.csproj</projectFile>
     <projectFile>589. N-ary Tree Preorder Traversal/589. N-ary Tree Preorder Traversal.csproj</projectFile>
     <projectFile>6. Zigzag Conversion/6. Zigzag Conversion.csproj</projectFile>
+    <projectFile>617. Merge Two Binary Trees/617. Merge Two Binary Trees.csproj</projectFile>
+    <projectFile>62. Unique Paths/62. Unique Paths.csproj</projectFile>
+    <projectFile>695. Max Area of Island/695. Max Area of Island.csproj</projectFile>
+    <projectFile>70. Climbing Stairs/70. Climbing Stairs.csproj</projectFile>
+    <projectFile>700. Search in a Binary Search Tree/700. Search in a Binary Search Tree.csproj</projectFile>
+    <projectFile>701. Insert into a Binary Search Tree/701. Insert into a Binary Search Tree.csproj</projectFile>
     <projectFile>704. Binary Search/704. Binary Search.csproj</projectFile>
     <projectFile>724. Find Pivot Index/724. Find Pivot Index.csproj</projectFile>
+    <projectFile>733. Flood Fill/733. Flood Fill.csproj</projectFile>
     <projectFile>74. Search a 2D Matrix/74. Search a 2D Matrix.csproj</projectFile>
+    <projectFile>746. Min Cost Climbing Stairs/746. Min Cost Climbing Stairs.csproj</projectFile>
+    <projectFile>77. Combinations/77. Combinations.csproj</projectFile>
+    <projectFile>784. Letter Case Permutation/784. Letter Case Permutation.csproj</projectFile>
+    <projectFile>83. Remove Duplicates from Sorted List/83. Remove Duplicates from Sorted List.csproj</projectFile>
     <projectFile>876. Middle of the Linked List/876. Middle of the Linked List.csproj</projectFile>
     <projectFile>88. Merge Sorted Array/88. Merge Sorted Array.csproj</projectFile>
+    <projectFile>94. Binary Tree Inorder Traversal/94. Binary Tree Inorder Traversal.csproj</projectFile>
     <projectFile>977. Squares of a Sorted Array/977. Squares of a Sorted Array.csproj</projectFile>
-    <projectFile>test/test.csproj</projectFile>
+    <projectFile>98. Validate Binary Search Tree/98. Validate Binary Search Tree.csproj</projectFile>
+    <projectFile>994. Rotting Oranges/994. Rotting Oranges.csproj</projectFile>
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="f719f7bd-c070-4359-87ce-bac1534f0e8f" name="Changes" comment="">
-      <change afterPath="$PROJECT_DIR$/.idea/.idea.Leetcode/.idea/projectSettingsUpdater.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/.idea.Leetcode/.idea/workspace.xml" afterDir="false" />
+    <list default="true" id="11f2de1c-1ee5-4aa4-91e6-11975ebd421f" name="Changes" comment="">
+      <change beforePath="$PROJECT_DIR$/.idea/.idea.Leetcode/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/.idea.Leetcode/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/Leetcode.sln" beforeDir="false" afterPath="$PROJECT_DIR$/Leetcode.sln" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -54,36 +93,47 @@
   <component name="MarkdownSettingsMigration">
     <option name="stateVersion" value="1" />
   </component>
-  <component name="ProjectId" id="2M3c8vGw47BD2vDnr3iTnhy7yec" />
-  <component name="ProjectLevelVcsManager">
-    <ConfirmationsSetting value="2" id="Add" />
-  </component>
+  <component name="ProjectId" id="2MbItycivFzycjT9hquXZe9USRT" />
   <component name="ProjectViewState">
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent">{
-  &quot;keyToString&quot;: {
-    &quot;ASKED_ADD_EXTERNAL_FILES&quot;: &quot;true&quot;,
-    &quot;ASKED_SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;,
-    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
-    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
-    &quot;SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;,
-    &quot;WebServerToolWindowFactoryState&quot;: &quot;false&quot;,
-    &quot;last_opened_file_path&quot;: &quot;/home/nullptr/Projects/dotNET/Leetcode/6. Zigzag Conversion/6. Zigzag Conversion.csproj&quot;,
-    &quot;nodejs_package_manager_path&quot;: &quot;npm&quot;,
-    &quot;settings.editor.selected.configurable&quot;: &quot;SolutionBuilderGeneralOptionsPage&quot;,
-    &quot;vue.rearranger.settings.migration&quot;: &quot;true&quot;
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "RunOnceActivity.OpenProjectViewOnStart": "true",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "WebServerToolWindowFactoryState": "false",
+    "last_opened_file_path": "/home/nullptr/Projects/dotNET/Leetcode/6. Zigzag Conversion/6. Zigzag Conversion.csproj",
+    "settings.editor.selected.configurable": "SolutionBuilderGeneralOptionsPage",
+    "vue.rearranger.settings.migration": "true"
   },
-  &quot;keyToStringList&quot;: {
-    &quot;rider.external.source.directories&quot;: [
-      &quot;/home/nullptr/.config/JetBrains/Rider2022.3/resharper-host/DecompilerCache&quot;,
-      &quot;/home/nullptr/.config/JetBrains/Rider2022.3/resharper-host/SourcesCache&quot;,
-      &quot;/home/nullptr/.local/share/Symbols/src&quot;
+  "keyToStringList": {
+    "rider.external.source.directories": [
+      "/home/nullptr/.config/JetBrains/Rider2022.3/resharper-host/DecompilerCache",
+      "/home/nullptr/.config/JetBrains/Rider2022.3/resharper-host/SourcesCache",
+      "/home/nullptr/.local/share/Symbols/src"
     ]
   }
-}</component>
-  <component name="RunManager" selected=".NET Project.2. Add Two Numbers">
+}]]></component>
+  <component name="RunManager" selected=".NET Project.6. Zigzag Conversion">
+    <configuration name="101. Symmetric Tree" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/101. Symmetric Tree/101. Symmetric Tree.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="102. Binary Tree Level Order Traversal" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -102,6 +152,60 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="104. Maximum Depth of Binary Tree" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/104. Maximum Depth of Binary Tree/104. Maximum Depth of Binary Tree.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="112. Path Sum" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/112. Path Sum/112. Path Sum.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="116. Populating Next Right Pointers in Each Node" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/116. Populating Next Right Pointers in Each Node/116. Populating Next Right Pointers in Each Node.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="118. Pascal's Triangle" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -138,6 +242,42 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="136. Single Number" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/136. Single Number/136. Single Number.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="141. Linked List Cycle" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/141. Linked List Cycle/141. Linked List Cycle.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="142. Linked List Cycle II" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -156,6 +296,42 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="144. Binary Tree Preorder Traversal" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/144. Binary Tree Preorder Traversal/144. Binary Tree Preorder Traversal.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="145. Binary Tree Postorder Traversal" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/145. Binary Tree Postorder Traversal/145. Binary Tree Postorder Traversal.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="1480. Running Sum of 1d Array" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -210,6 +386,78 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="190. Reverse Bits" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/190. Reverse Bits/190. Reverse Bits.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="191. Number of 1 Bits" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
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+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/191. Number of 1 Bits/191. Number of 1 Bits.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
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+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="198. House Robber" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
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+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="19. Remove Nth Node From End of List" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/19. Remove Nth Node From End of List/19. Remove Nth Node From End of List.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="1. Two Sum" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -228,6 +476,42 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="200. Number of Islands" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/200. Number of Islands/200. Number of Islands.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="203. Remove Linked List Elements" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/203. Remove Linked List Elements/203. Remove Linked List Elements.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="205. Isomorphic Strings" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -264,6 +548,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="20. Valid Parentheses" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/20. Valid Parentheses/20. Valid Parentheses.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="217. Contains Duplicate" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -300,6 +602,78 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="226. Invert Binary Tree" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/226. Invert Binary Tree/226. Invert Binary Tree.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="231. Power of Two" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/231. Power of Two/231. Power of Two.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="232. Implement Queue using Stacks" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/232. Implement Queue using Stacks/232. Implement Queue using Stacks.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="235. Lowest Common Ancestor of a Binary Search Tree" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/235. Lowest Common Ancestor of a Binary Search Tree/235. Lowest Common Ancestor of a Binary Search Tree.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="240. Search a 2D Matrix II" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -372,6 +746,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="299. Bulls and Cows" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/299. Bulls and Cows/299. Bulls and Cows.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="2. Add Two Numbers" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -516,6 +908,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="3. Longest Substring Without Repeating Characters" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/3. Longest Substring Without Repeating Characters/3. Longest Substring Without Repeating Characters.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="409. Longest Palindrome" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -534,6 +944,60 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="424. Longest Repeating Character Replacement" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/424. Longest Repeating Character Replacement/424. Longest Repeating Character Replacement.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="438. Find All Anagrams in a String" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/438. Find All Anagrams in a String/438. Find All Anagrams in a String.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="46. Permutations" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/46. Permutations/46. Permutations.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="4. Median of Two Sorted Arrays" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -552,6 +1016,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="509. Fibonacci Number" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/509. Fibonacci Number/509. Fibonacci Number.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="53. Maximum Subarray" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -570,6 +1052,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="542. 01 Matrix" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/542. 01 Matrix/542. 01 Matrix.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="557. Reverse Words in a String III" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -606,6 +1106,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="567. Permutation in String" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/567. Permutation in String/567. Permutation in String.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="589. N-ary Tree Preorder Traversal" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -624,6 +1142,60 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="617. Merge Two Binary Trees" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/617. Merge Two Binary Trees/617. Merge Two Binary Trees.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="62. Unique Paths" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/62. Unique Paths/62. Unique Paths.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="695. Max Area of Island" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/695. Max Area of Island/695. Max Area of Island.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="6. Zigzag Conversion" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -642,6 +1214,42 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="700. Search in a Binary Search Tree" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/700. Search in a Binary Search Tree/700. Search in a Binary Search Tree.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="701. Insert into a Binary Search Tree" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/701. Insert into a Binary Search Tree/701. Insert into a Binary Search Tree.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="704. Binary Search" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -660,6 +1268,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="70. Climbing Stairs" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/70. Climbing Stairs/70. Climbing Stairs.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="724. Find Pivot Index" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -678,6 +1304,42 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="733. Flood Fill" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/733. Flood Fill/733. Flood Fill.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="746. Min Cost Climbing Stairs" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/746. Min Cost Climbing Stairs/746. Min Cost Climbing Stairs.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="74. Search a 2D Matrix" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -696,6 +1358,60 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="77. Combinations" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/77. Combinations/77. Combinations.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="784. Letter Case Permutation" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/784. Letter Case Permutation/784. Letter Case Permutation.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="83. Remove Duplicates from Sorted List" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/83. Remove Duplicates from Sorted List/83. Remove Duplicates from Sorted List.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="876. Middle of the Linked List" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -732,6 +1448,24 @@
         <option name="Build" />
       </method>
     </configuration>
+    <configuration name="94. Binary Tree Inorder Traversal" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/94. Binary Tree Inorder Traversal/94. Binary Tree Inorder Traversal.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
     <configuration name="977. Squares of a Sorted Array" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
@@ -750,7 +1484,7 @@
         <option name="Build" />
       </method>
     </configuration>
-    <configuration name="test" type="DotNetProject" factoryName=".NET Project">
+    <configuration name="98. Validate Binary Search Tree" type="DotNetProject" factoryName=".NET Project">
       <option name="EXE_PATH" value="" />
       <option name="PROGRAM_PARAMETERS" value="" />
       <option name="WORKING_DIRECTORY" value="" />
@@ -758,7 +1492,25 @@
       <option name="USE_EXTERNAL_CONSOLE" value="0" />
       <option name="USE_MONO" value="0" />
       <option name="RUNTIME_ARGUMENTS" value="" />
-      <option name="PROJECT_PATH" value="$PROJECT_DIR$/test/test.csproj" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/98. Validate Binary Search Tree/98. Validate Binary Search Tree.csproj" />
+      <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+      <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+      <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+      <option name="PROJECT_KIND" value="DotNetCore" />
+      <option name="PROJECT_TFM" value="" />
+      <method v="2">
+        <option name="Build" />
+      </method>
+    </configuration>
+    <configuration name="994. Rotting Oranges" type="DotNetProject" factoryName=".NET Project">
+      <option name="EXE_PATH" value="" />
+      <option name="PROGRAM_PARAMETERS" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="PASS_PARENT_ENVS" value="1" />
+      <option name="USE_EXTERNAL_CONSOLE" value="0" />
+      <option name="USE_MONO" value="0" />
+      <option name="RUNTIME_ARGUMENTS" value="" />
+      <option name="PROJECT_PATH" value="$PROJECT_DIR$/994. Rotting Oranges/994. Rotting Oranges.csproj" />
       <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
       <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
       <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
@@ -772,14 +1524,12 @@
   <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
   <component name="TaskManager">
     <task active="true" id="Default" summary="Default task">
-      <changelist id="f719f7bd-c070-4359-87ce-bac1534f0e8f" name="Changes" comment="" />
-      <created>1676999551488</created>
+      <changelist id="11f2de1c-1ee5-4aa4-91e6-11975ebd421f" name="Changes" comment="" />
+      <created>1678030074860</created>
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
-      <updated>1676999551488</updated>
-      <workItem from="1676999555364" duration="301000" />
-      <workItem from="1676999873840" duration="6924000" />
-      <workItem from="1677962743253" duration="1505000" />
+      <updated>1678030074860</updated>
+      <workItem from="1678030078340" duration="114000" />
     </task>
     <servers />
   </component>
@@ -788,7 +1538,6 @@
   </component>
   <component name="UnityUnitTestConfiguration" currentTestLauncher="NUnit" />
   <component name="VcsManagerConfiguration">
-    <option name="ADD_EXTERNAL_FILES_SILENTLY" value="true" />
     <option name="CLEAR_INITIAL_COMMIT_MESSAGE" value="true" />
   </component>
 </project>
\ No newline at end of file
diff --git a/Leetcode.sln b/Leetcode.sln
index f584bf3..b3afe4a 100644
--- a/Leetcode.sln
+++ b/Leetcode.sln
@@ -1,4 +1,4 @@
-
+
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.3.32901.215
@@ -153,11 +153,11 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "136. Single Number", "136.
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "191. Number of 1 Bits", "191. Number of 1 Bits\191. Number of 1 Bits.csproj", "{6950BC7E-2DB5-4DBF-9C2C-B331F9ED99DB}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "4. Median of Two Sorted Arrays", "4. Median of Two Sorted Arrays\4. Median of Two Sorted Arrays.csproj", "{CAD43138-0C0D-4C92-B714-24D620804969}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "2. Add Two Numbers", "2. Add Two Numbers\2. Add Two Numbers.csproj", "{F534D9DD-C6F4-4AC1-83EA-06A79E17BBFB}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "2. Add Two Numbers", "2. Add Two Numbers\2. Add Two Numbers.csproj", "{1A9AF8A6-FD60-4AF3-8F42-3CCA483A4950}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "4. Median of Two Sorted Arrays", "4. Median of Two Sorted Arrays\4. Median of Two Sorted Arrays.csproj", "{1127A8CA-96B9-4245-987E-B7D1FF7A741D}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "6. Zigzag Conversion", "6. Zigzag Conversion\6. Zigzag Conversion.csproj", "{7B0C033A-7D5D-4B75-AFFB-D012DA62C008}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "6. Zigzag Conversion", "6. Zigzag Conversion\6. Zigzag Conversion.csproj", "{4C15CB37-485C-4CD0-9BD4-D713CC744ECC}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -301,7 +301,6 @@ Global
 		{557D8195-C886-4B52-BBC4-285A1C1057FF}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{557D8195-C886-4B52-BBC4-285A1C1057FF}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{557D8195-C886-4B52-BBC4-285A1C1057FF}.Release|Any CPU.Build.0 = Release|Any CPU
-<<<<<<< Updated upstream
 		{EC089303-B1E1-482F-BAED-530DAB4C1346}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{EC089303-B1E1-482F-BAED-530DAB4C1346}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{EC089303-B1E1-482F-BAED-530DAB4C1346}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -466,20 +465,18 @@ Global
 		{6950BC7E-2DB5-4DBF-9C2C-B331F9ED99DB}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{6950BC7E-2DB5-4DBF-9C2C-B331F9ED99DB}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{6950BC7E-2DB5-4DBF-9C2C-B331F9ED99DB}.Release|Any CPU.Build.0 = Release|Any CPU
-=======
-		{CAD43138-0C0D-4C92-B714-24D620804969}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{CAD43138-0C0D-4C92-B714-24D620804969}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{CAD43138-0C0D-4C92-B714-24D620804969}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{CAD43138-0C0D-4C92-B714-24D620804969}.Release|Any CPU.Build.0 = Release|Any CPU
-		{1A9AF8A6-FD60-4AF3-8F42-3CCA483A4950}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{1A9AF8A6-FD60-4AF3-8F42-3CCA483A4950}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{1A9AF8A6-FD60-4AF3-8F42-3CCA483A4950}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{1A9AF8A6-FD60-4AF3-8F42-3CCA483A4950}.Release|Any CPU.Build.0 = Release|Any CPU
-		{7B0C033A-7D5D-4B75-AFFB-D012DA62C008}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{7B0C033A-7D5D-4B75-AFFB-D012DA62C008}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{7B0C033A-7D5D-4B75-AFFB-D012DA62C008}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{7B0C033A-7D5D-4B75-AFFB-D012DA62C008}.Release|Any CPU.Build.0 = Release|Any CPU
->>>>>>> Stashed changes
+		{F534D9DD-C6F4-4AC1-83EA-06A79E17BBFB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F534D9DD-C6F4-4AC1-83EA-06A79E17BBFB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F534D9DD-C6F4-4AC1-83EA-06A79E17BBFB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F534D9DD-C6F4-4AC1-83EA-06A79E17BBFB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1127A8CA-96B9-4245-987E-B7D1FF7A741D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1127A8CA-96B9-4245-987E-B7D1FF7A741D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1127A8CA-96B9-4245-987E-B7D1FF7A741D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1127A8CA-96B9-4245-987E-B7D1FF7A741D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4C15CB37-485C-4CD0-9BD4-D713CC744ECC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4C15CB37-485C-4CD0-9BD4-D713CC744ECC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4C15CB37-485C-4CD0-9BD4-D713CC744ECC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4C15CB37-485C-4CD0-9BD4-D713CC744ECC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE