diff --git a/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp b/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp
index ce823cc..9a393f9 100755
--- a/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp
+++ b/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp
@@ -142,7 +142,11 @@ BinaryTreeLnk<Data>& BinaryTreeLnk<Data>::operator=(BinaryTreeLnk<Data>&& tree)
 
 template <typename Data>
 bool BinaryTreeLnk<Data>::operator==(const BinaryTreeLnk<Data>& tree) const noexcept{
-  return (Root() == tree.Root());
+  if(size == tree.size){
+    return (Root() == tree.Root());
+  }else{
+    return false;
+  }
 }
 
 template <typename Data>
diff --git a/librerie/exercise3/binarytree/vec/binarytreevec.cpp b/librerie/exercise3/binarytree/vec/binarytreevec.cpp
index 89e0c35..ae60260 100755
--- a/librerie/exercise3/binarytree/vec/binarytreevec.cpp
+++ b/librerie/exercise3/binarytree/vec/binarytreevec.cpp
@@ -105,6 +105,7 @@ BinaryTreeVec<Data>::~BinaryTreeVec(){
 
 template <typename Data>
 BinaryTreeVec<Data>& BinaryTreeVec<Data>::operator=(const BinaryTreeVec<Data>& bt){
+  Clear();
   size = bt.size;
   tree.Resize(size);
   for(ulong i=0 ; i<size ; ++i){
@@ -116,6 +117,7 @@ BinaryTreeVec<Data>& BinaryTreeVec<Data>::operator=(const BinaryTreeVec<Data>& b
 
 template <typename Data>
 BinaryTreeVec<Data>& BinaryTreeVec<Data>::operator=(BinaryTreeVec<Data>&& bt) noexcept{
+  Clear();
   std::swap(size, bt.size);
   std::swap(tree, bt.tree);
   for(ulong i=0 ; i<size ; ++i){
diff --git a/librerie/exercise3/zlasdtest/test.cpp b/librerie/exercise3/zlasdtest/test.cpp
index 92d6ae3..49ed51f 100755
--- a/librerie/exercise3/zlasdtest/test.cpp
+++ b/librerie/exercise3/zlasdtest/test.cpp
@@ -15,10 +15,10 @@ using namespace std;
 
 void lasdtest() {
   cout << endl << "~*~#~*~ Welcome to the LASD Test Suite ~*~#~*~ " << endl;
-  //testSimpleExercise1();
-  //testFullExercise1();
-  //testSimpleExercise2();
-  //testFullExercise2();
+  testSimpleExercise1();
+  testFullExercise1();
+  testSimpleExercise2();
+  testFullExercise2();
   testSimpleExercise3();
   testFullExercise3();
   cout << endl << "Goodbye!" << endl;