diff --git a/LICENSE b/LICENSE
index fa1a4c5..ab1f22b 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1 +1 @@
-Copyright (c) 2020 Huiming Zhou
+Copyright (c) 2020 Huiming Zhou & Yue Qi
diff --git a/Search-based Planning/.idea/workspace.xml b/Search-based Planning/.idea/workspace.xml
index b161f78..02f1cd6 100644
--- a/Search-based Planning/.idea/workspace.xml	
+++ b/Search-based Planning/.idea/workspace.xml	
@@ -19,7 +19,9 @@
     <select />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="025aff36-a6aa-4945-ab7e-b2c625055f47" name="Default Changelist" comment="" />
+    <list default="true" id="025aff36-a6aa-4945-ab7e-b2c625055f47" name="Default Changelist" comment="">
+      <change beforePath="$PROJECT_DIR$/Search_2D/env.py" beforeDir="false" afterPath="$PROJECT_DIR$/Search_2D/env.py" afterDir="false" />
+    </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
diff --git a/Search-based Planning/Search_2D/env.py b/Search-based Planning/Search_2D/env.py
index 66a41c4..0cd2424 100644
--- a/Search-based Planning/Search_2D/env.py	
+++ b/Search-based Planning/Search_2D/env.py	
@@ -39,8 +39,6 @@ class Env:
 
         for i in range(15, 30):
             obs.add((30, i))
-        # for i in range(15, 25):
-        #     obs.add((30, i))
         for i in range(16):
             obs.add((40, i))