diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 908ae83..5bfa897 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -11,7 +11,11 @@
     </configurations>
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="0facce0d-c642-4d80-b2fb-daf5f3e68dff" name="Default Changelist" comment="" />
+    <list default="true" id="0facce0d-c642-4d80-b2fb-daf5f3e68dff" name="Default Changelist" comment="">
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/inc/utils.h" beforeDir="false" afterPath="$PROJECT_DIR$/inc/utils.h" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pattern/signleton.h" beforeDir="false" afterPath="$PROJECT_DIR$/src/pattern/signleton.h" afterDir="false" />
+    </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -97,6 +101,8 @@
       <workItem from="1581558579086" duration="643000" />
       <workItem from="1583501235151" duration="617000" />
       <workItem from="1584890523991" duration="223000" />
+      <workItem from="1585674715896" duration="786000" />
+      <workItem from="1585735060761" duration="922000" />
     </task>
     <servers />
   </component>
diff --git a/inc/utils.h b/inc/utils.h
index d1cc199..c02c7a9 100644
--- a/inc/utils.h
+++ b/inc/utils.h
@@ -21,4 +21,5 @@ using namespace std;
     }
 string itos(int x);
 
+
 #endif //CUTILS_UTILS_H
diff --git a/src/pattern/signleton.h b/src/pattern/signleton.h
index e03b5c0..c279246 100644
--- a/src/pattern/signleton.h
+++ b/src/pattern/signleton.h
@@ -12,18 +12,20 @@ using namespace std;
 template <typename T> class Singletone
 {
 public:
-    static T& Instance(){
+    static T* Instance(){
         if(mInstance.get() == nullptr){
-            mInstance = std::unique_ptr<T>();
+            mInstance = std::unique_ptr<T>(new T);
         }
         return mInstance.get();
     }
 private:
-    Singletone<T>(){};
-    ~Singletone<T>(){};
-    Singletone &operator=(const Singletone&){};
+    Singletone<T>(){}
+    ~Singletone<T>(){}
+    Singletone &operator=(const Singletone&){}
     static unique_ptr<T> mInstance;
 };
+template <typename T>
+unique_ptr<T> Singletone<T>::mInstance;
 
 #define  DECLARE_SINGLETON(type) \
     friend class unique_ptr<type> ; \