diff --git a/.DS_Store b/.DS_Store
index 5f8901c..13b05af 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..e7e9d11
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,2 @@
+# Default ignored files
+/workspace.xml
diff --git a/.idea/LeetCode.iml b/.idea/LeetCode.iml
new file mode 100644
index 0000000..9b31378
--- /dev/null
+++ b/.idea/LeetCode.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="jdk" jdkName="Python 3.8" jdkType="Python SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000..105ce2d
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..d1e22ec
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.8" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..f759faa
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/LeetCode.iml" filepath="$PROJECT_DIR$/.idea/LeetCode.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
index bb38db8..e32f83d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,3 +1,3 @@
 {
-    "python.pythonPath": "C:\\ProgramData\\Anaconda2\\envs\\py3\\python.exe"
+    "python.pythonPath": "/Users/jack/opt/anaconda3/bin/python"
 }
\ No newline at end of file
diff --git "a/0001.\344\270\244\346\225\260\344\271\213\345\222\214/0001-\344\270\244\346\225\260\344\271\213\345\222\214.java" "b/0001.\344\270\244\346\225\260\344\271\213\345\222\214/0001-\344\270\244\346\225\260\344\271\213\345\222\214.java"
index 793b582..a00c984 100644
--- "a/0001.\344\270\244\346\225\260\344\271\213\345\222\214/0001-\344\270\244\346\225\260\344\271\213\345\222\214.java"
+++ "b/0001.\344\270\244\346\225\260\344\271\213\345\222\214/0001-\344\270\244\346\225\260\344\271\213\345\222\214.java"
@@ -1,3 +1,5 @@
+import java.util.*;
+ 
 class Solution {
     public int[] twoSum(int[] nums, int target) {
         Map<Integer, Integer> map = new HashMap<>();
@@ -10,5 +12,8 @@ public int[] twoSum(int[] nums, int target) {
         }
         return new int[]{};
     }
-    
+
+    public static void main(String[] arg){
+        System.out.println("Hello Java");
+    }
 }