diff --git a/librerie/exercise3/Exercise3.pdf b/librerie/exercise3/Exercise3.pdf
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diff --git a/librerie/exercise3/binarytree/binarytree.cpp b/librerie/exercise3/binarytree/binarytree.cpp
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diff --git a/librerie/exercise3/binarytree/binarytree.hpp b/librerie/exercise3/binarytree/binarytree.hpp
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diff --git a/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp b/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp
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index 1321605..43ac635
--- a/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp
+++ b/librerie/exercise3/binarytree/lnk/binarytreelnk.cpp
@@ -34,20 +34,15 @@ bool BinaryTreeLnk<Data>::NodeLnk::HasRightChild() const noexcept{
 }
 
 template <typename Data>
-NodeLnk& BinaryTreeLnk<Data>::NodeLnk::LeftChild() const{
+Node& BinaryTreeLnk<Data>::NodeLnk::LeftChild() const{
   return *left;
 }
 
 template <typename Data>
-NodeLnk& BinaryTreeLnk<Data>::NodeLnk::RightChild() const{
+Node& BinaryTreeLnk<Data>::NodeLnk::RightChild() const{
   return *right;
 }
 
-template <typename Data>
-BinaryTreeLnk<Data>::BinaryTreeLnk(){
-  size = 0;
-}
-
 // creates a tree from a linear container in breadth
 template <typename Data>
 BinaryTreeLnk<Data>::BinaryTreeLnk(const LinearContainer<Data>& lc){
@@ -85,15 +80,17 @@ BinaryTreeLnk<Data>::BinaryTreeLnk(const BinaryTreeLnk<Data>& tree){
 }
 
 BinaryTreeLnk<Data>::NodeLnk* BinaryTreeLnk<Data>::CopyTree(struct BinaryTreeLnk<Data>::NodeLnk* nodeToCopy){
+  if(nodeToCopy==nullptr) return nullptr;
+
   struct BinaryTreeLnk<Data>::NodeLnk* tmp = CreateNode(nodeToCopy.Element());
 
   if(nodeToCopy.HasLeftChild())
-    tmp->left = copyTrees(&(nodeToCopy.LeftChild()));
+    tmp->left = copyTree(&(nodeToCopy.LeftChild()));
   else
     tmp->left = nullptr;
 
   if(nodeToCopy.HasRightChild())
-    tmp->right = copyTrees(&(nodeToCopy.RightChild()));
+    tmp->right = copyTree(&(nodeToCopy.RightChild()));
   else
     tmp->right = nullptr;
 
diff --git a/librerie/exercise3/binarytree/lnk/binarytreelnk.hpp b/librerie/exercise3/binarytree/lnk/binarytreelnk.hpp
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index 3f15ed8..aaf8350
--- a/librerie/exercise3/binarytree/lnk/binarytreelnk.hpp
+++ b/librerie/exercise3/binarytree/lnk/binarytreelnk.hpp
@@ -31,13 +31,11 @@ protected:
 
     using BinaryTree<Data>::Node::data;
     struct NodeLnk* left;
-    struct* NodeLnk* right;
+    struct NodeLnk* right;
 
   public:
-    NodeLnk& operator=(const NodeLnk&); // Copy assignment of abstract types should not be possible.
-
-    // Move assignment
-    Node& operator=(Node&&) noexcept override; // Move assignment of abstract types should not be possible.
+    Node& operator=(const NodeLnk&); // Copy assignment of abstract types should not be possible.
+    Node& operator=(NodeLnk&&) noexcept override; // Move assignment of abstract types should not be possible.
     bool IsLeaf() const noexcept override; // (concrete function should not throw exceptions)
     bool HasLeftChild() const noexcept override; // (concrete function should not throw exceptions)
     bool HasRightChild() const noexcept override; // (concrete function should not throw exceptions)
@@ -52,7 +50,7 @@ protected:
 public:
 
   // Default constructor
-  BinaryTreeLnk();
+  BinaryTreeLnk() = default;
 
   /* ************************************************************************ */
 
@@ -75,10 +73,10 @@ public:
   /* ************************************************************************ */
 
   // Copy assignment
-  BinaryTreeLnk<Data>& operator=(const BinaryTreeLnk<Data>&);
+  BinaryTreeLnk& operator=(const BinaryTreeLnk<Data>&);
 
   // Move assignment
-  BinaryTreeLnk<Data> operator=(BinaryTreeLnk<Data>&&) noexcept;
+  BinaryTreeLnk& operator=(BinaryTreeLnk<Data>&&) noexcept;
 
   /* ************************************************************************ */
 
diff --git a/librerie/exercise3/binarytree/vec/binarytreevec.cpp b/librerie/exercise3/binarytree/vec/binarytreevec.cpp
old mode 100644
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index d374ceb..ee328d7
--- a/librerie/exercise3/binarytree/vec/binarytreevec.cpp
+++ b/librerie/exercise3/binarytree/vec/binarytreevec.cpp
@@ -3,7 +3,162 @@ namespace lasd {
 
 /* ************************************************************************** */
 
-// ...
+template <typename Data>
+struct BinaryTree<Data>:Node& BinaryTreeVec<Data>::NodeVec::operator=(const BinaryTreeVec<Data>::NodeVec& node){
+  ReferenceToTree = node.ReferenceToTree;
+  data = node.data;
+  index = node.index;
+  return *this;
+}
+
+template <typename Data>
+struct BinaryTree<Data>:Node& BinaryTreeVec<Data>::NodeVec::operator=(BinaryTreeVec<Data>::NodeVec&& node) noexcept{
+  std::swap(data, node.data);
+  std::swap(index, node.index);
+  std::swap(ReferenceToTree, node.ReferenceToTree);
+  return *this;
+}
+
+template <typename Data>
+bool BinaryTreeVec<Data>::NodeVec::IsLeaf() const noexcept{
+  return (!HasLeftChild() && !HasRightChild());
+}
+
+template <typename Data>
+bool BinaryTreeVec<Data>::NodeVec::HasLeftChild() const noexcept{
+  if(index*2+1 < ReferenceToTree->size){
+    return true;
+  }else{
+    return false;
+  }
+}
+
+template <typename Data>
+bool BinaryTreeVec<Data>::NodeVec::HasRightChild() const noexcept{
+  if(index*2+2 < ReferenceToTree->size){
+    return true;
+  }else{
+    return false;
+  }
+}
+
+template <typename Data>
+struct BinaryTree<Data>::Node& BinaryTreeVec<Data>::NodeVec::LeftChild() const{
+  if(index*2+1 < ReferenceToTree->size)
+    return *((ReferenceToTree->tree)[index*2+1]);
+  else
+    throw std::out_of_range("Left child does not exist!");
+}
+
+template <typename Data>
+struct BinaryTree<Data>::Node& BinaryTreeVec<Data>::NodeVec::RightChild() const{
+  if(index*2+2 < ReferenceToTree->size)
+    return *((ReferenceToTree->tree)[index*2+2]);
+  else
+    throw std::out_of_range("Right child does not exist!");
+}
+
+template <typename Data>
+BinaryTreeVec<Data>::BinaryTreeVec(const LinearContainer<Data>& lc){
+  tree.Resize(lc.Size());
+  size = lc.Size();
+  for(ulong i=0 ; i<size ; ++i){
+    struct NodeVec* tmp = new BinaryTreeVec<Data>::NodeVec;
+    tmp->data = lc[i];
+    tmp->index = i;
+    tmp->ReferenceToTree = this;
+    tree[i] = tmp;
+  }
+}
+
+template <typename Data>
+BinaryTreeVec<Data>::BinaryTreeVec(const BinaryTreeVec<Data>& bt){
+  size = bt.size;
+  tree.Resize(size);
+  for(ulong i=0 ; i<size ; ++i){
+    struct NodeVec* tmp = new BinaryTreeVec<Data>::NodeVec;
+    tmp->data = bt[i];
+    tmp->index = i;
+    tmp->ReferenceToTree = this;
+    tree[i] = tmp;
+  }
+}
+
+template <typename Data>
+BinaryTreeVec<Data>::BinaryTreeVec(BinaryTreeVec<Data>&& bt) noexcept{
+  std::swap(size,bt.size);
+  std::swap(tree,bt.tree);
+}
+
+template <typename Data>
+BinaryTreeVec<Data>::~BinaryTreeVec(){
+  Clear();
+}
+
+template <typename Data>
+bool BinaryTreeVec<Data>::operator=(const BinaryTreeVec<Data>& bt){
+  size = bt.size;
+  tree.Resize(size);
+  for(ulong i=0 ; i<size ; ++i){
+    struct NodeVec* tmp = new BinaryTreeVec<Data>::NodeVec;
+    tmp->data = bt[i];
+    tmp->index = i;
+    tmp->ReferenceToTree = this;
+    tree[i] = tmp;
+  }
+  return *this;
+}
+
+template <typename Data>
+bool BinaryTreeVec<Data>::operator=(BinaryTreeVec<Data>&& bt) noexcept{
+  std::swap(size, bt.size);
+  std::swap(tree, bt.tree);
+  return *this;
+}
+
+template <typename Data>
+bool BinaryTreeVec<Data>::operator==(const BinaryTreeVec& bt) const noexcept{
+  if(size==bt.size){
+    for(ulong i=0 ; i<size ; ++i){
+      if((tree[i])->data != ((bt.tree)[i])->data ) return false;
+    }
+    return true;
+  }
+  return false;
+}
+
+template <typename Data>
+bool BinaryTreeVec<Data>::operator!=(const BinaryTreeVec& bt) const noexcept{
+  return !(*this == bt);
+}
+
+template <typename Data>
+struct BinaryTreeVec<Data>::Node& BinaryTreeVec<Data>::Root(){
+  return *(tree.Front());
+}
+
+template <typename Data>
+void BinaryTreeVec<Data>::Clear(){
+  for(ulong i=0 ; i<size ; ++i){
+    delete tree[i];
+    tree[i] = nullptr
+  }
+  size = 0;
+}
+
+template <typename Data>
+void BinaryTreeVec<Data>::MapBreadth(const MapFunctor func, void* par) override{
+  for(ulong i=0 ; i<size ; ++i){
+    func( *(tree[i]), par);
+  }
+}
+
+template <typename Data>
+void BinaryTreeVec<Data>::FoldBreadth(const MapFunctor func, const void* par, void* acc) override{
+  for(ulong i=0 ; i<size ; ++i){
+    func( *(tree[i]), par, acc);
+  }
+}
 
 /* ************************************************************************** */
 
diff --git a/librerie/exercise3/binarytree/vec/binarytreevec.hpp b/librerie/exercise3/binarytree/vec/binarytreevec.hpp
old mode 100644
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index d7b94cb..29a3764
--- a/librerie/exercise3/binarytree/vec/binarytreevec.hpp
+++ b/librerie/exercise3/binarytree/vec/binarytreevec.hpp
@@ -14,82 +14,89 @@ namespace lasd {
 /* ************************************************************************** */
 
 template <typename Data>
-class BinaryTreeVec { // Must extend BinaryTree<Data>
+class BinaryTreeVec : virtual public BinaryTree<Data>{ // Must extend BinaryTree<Data>
 
 private:
 
-  // ...
-
 protected:
 
-  // using BinaryTree<Data>::???;
+  using BinaryTree<Data>::size;
+  // using BinaryTree<Data>::Node;
+  Vector<struct NodeVec*> tree;
 
-  // ...
-
-  struct NodeVec { // Must extend Node
+  struct NodeVec : virtual protected BinaryTree<Data>::Node { // Must extend Node
 
   private:
 
-    // ...
-
   protected:
-
-    // ...
+    using BinaryTree<Data>::Node::data;
+    ulong index;
+    BinaryTreeVec<Data>* ReferenceToTree = nullptr;
 
   public:
-
-    // ...
-
+    struct BinaryTree<Data>::Node& operator=(const NodeVec&) override; // Copy assignment of abstract types should not be possible.
+    struct BinaryTree<Data>::Node& operator=(NodeVec&&) noexcept override; // Move assignment of abstract types should not be possible.
+    bool IsLeaf() const noexcept override; // (concrete function should not throw exceptions)
+    bool HasLeftChild() const noexcept override; // (concrete function should not throw exceptions)
+    bool HasRightChild() const noexcept override; // (concrete function should not throw exceptions)
+    struct BinaryTree<Data>::Node& LeftChild() const override; // (concrete function must throw std::out_of_range when not existent)
+    struct BinaryTree<Data>::Node& RightChild() const override; // (concrete function must throw std::out_of_range when not existent)
   };
 
 public:
 
   // Default constructor
-  // BinaryTreeVec() specifiers;
+  BinaryTreeVec() = default;
 
   /* ************************************************************************ */
 
   // Specific constructors
-  // BinaryTreeVec(argument) specifiers; // A binary tree obtained from a LinearContainer
+  BinaryTreeVec(const LinearContainer<Data>&); // A binary tree obtained from a LinearContainer
 
   /* ************************************************************************ */
 
   // Copy constructor
-  // BinaryTreeVec(argument) specifiers;
+  BinaryTreeVec(const BinaryTreeVec<Data>&);
 
   // Move constructor
-  // BinaryTreeVec(argument) specifiers;
+  BinaryTreeVec(BinaryTreeVec<Data>&&) noexcept;
 
   /* ************************************************************************ */
 
   // Destructor
-  // ~BinaryTreeVec() specifiers;
+  virtual ~BinaryTreeVec();
 
   /* ************************************************************************ */
 
   // Copy assignment
-  // type operator=(argument) specifiers;
+  BinaryTreeVec& operator=(const BinaryTreeVec<Data>&);
 
   // Move assignment
-  // type operator=(argument) specifiers;
+  BinaryTreeVec& operator=(BinaryTreeVec<Data>&&) noexcept;
 
   /* ************************************************************************ */
 
   // Comparison operators
-  // type operator==(argument) specifiers;
-  // type operator!=(argument) specifiers;
+  bool operator==(const BinaryTreeVec&) const noexcept;
+  bool operator!=(const BinaryTreeVec&) const noexcept;
 
   /* ************************************************************************ */
 
   // Specific member functions (inherited from BinaryTree)
 
-  // type Root() specifiers; // Override BinaryTree member (throw std::length_error when empty)
+  struct BinaryTreeVec<Data>::NodeVec& Root() override; // Override BinaryTree member (throw std::length_error when empty)
 
   /* ************************************************************************ */
 
   // Specific member functions (inherited from Container)
 
-  // type Clear() specifiers; // Override Container member
+  void Clear() override; // Override Container member
+
+  /* ----- override of map and fold in breadth ----- */
+  using typename BinaryTree<Data>::MapFunctor;
+  using typename BinaryTree<Data>::FoldFunctor;
+  void MapBreadth(const MapFunctor, void*) override;
+  void FoldBreadth(const FoldFunctor, const void*, void*) const override;
 
 };
 
diff --git a/librerie/exercise3/build.sh b/librerie/exercise3/build.sh
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diff --git a/librerie/exercise3/container/container.cpp b/librerie/exercise3/container/container.cpp
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diff --git a/librerie/exercise3/container/container.hpp b/librerie/exercise3/container/container.hpp
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diff --git a/librerie/exercise3/iterator/iterator.hpp b/librerie/exercise3/iterator/iterator.hpp
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diff --git a/librerie/exercise3/list/list.cpp b/librerie/exercise3/list/list.cpp
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diff --git a/librerie/exercise3/list/list.hpp b/librerie/exercise3/list/list.hpp
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diff --git a/librerie/exercise3/main.cpp b/librerie/exercise3/main.cpp
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diff --git a/librerie/exercise3/vector/vector.cpp b/librerie/exercise3/vector/vector.cpp
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diff --git a/librerie/exercise3/vector/vector.hpp b/librerie/exercise3/vector/vector.hpp
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diff --git a/librerie/exercise3/zlasdtest/binarytree/binarytree.hpp b/librerie/exercise3/zlasdtest/binarytree/binarytree.hpp
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diff --git a/librerie/exercise3/zlasdtest/container/container.cpp b/librerie/exercise3/zlasdtest/container/container.cpp
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diff --git a/librerie/exercise3/zlasdtest/container/container.hpp b/librerie/exercise3/zlasdtest/container/container.hpp
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diff --git a/librerie/exercise3/zlasdtest/exercise1/fulltest.cpp b/librerie/exercise3/zlasdtest/exercise1/fulltest.cpp
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diff --git a/librerie/exercise3/zlasdtest/exercise1/simpletest.cpp b/librerie/exercise3/zlasdtest/exercise1/simpletest.cpp
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diff --git a/librerie/exercise3/zlasdtest/exercise1/test.hpp b/librerie/exercise3/zlasdtest/exercise1/test.hpp
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diff --git a/librerie/exercise3/zlasdtest/exercise2/fulltest.cpp b/librerie/exercise3/zlasdtest/exercise2/fulltest.cpp
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diff --git a/librerie/exercise3/zlasdtest/exercise2/simpletest.cpp b/librerie/exercise3/zlasdtest/exercise2/simpletest.cpp
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diff --git a/librerie/exercise3/zlasdtest/exercise2/test.hpp b/librerie/exercise3/zlasdtest/exercise2/test.hpp
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diff --git a/librerie/exercise3/zlasdtest/exercise3/fulltest.cpp b/librerie/exercise3/zlasdtest/exercise3/fulltest.cpp
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diff --git a/librerie/exercise3/zlasdtest/exercise3/simpletest.cpp b/librerie/exercise3/zlasdtest/exercise3/simpletest.cpp
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diff --git a/librerie/exercise3/zlasdtest/exercise3/test.hpp b/librerie/exercise3/zlasdtest/exercise3/test.hpp
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diff --git a/librerie/exercise3/zlasdtest/iterator/iterator.hpp b/librerie/exercise3/zlasdtest/iterator/iterator.hpp
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diff --git a/librerie/exercise3/zlasdtest/list/list.hpp b/librerie/exercise3/zlasdtest/list/list.hpp
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diff --git a/librerie/exercise3/zlasdtest/queue/queue.hpp b/librerie/exercise3/zlasdtest/queue/queue.hpp
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diff --git a/librerie/exercise3/zlasdtest/stack/stack.hpp b/librerie/exercise3/zlasdtest/stack/stack.hpp
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diff --git a/librerie/exercise3/zlasdtest/test.cpp b/librerie/exercise3/zlasdtest/test.cpp
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diff --git a/librerie/exercise3/zlasdtest/test.hpp b/librerie/exercise3/zlasdtest/test.hpp
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diff --git a/librerie/exercise3/zlasdtest/vector/vector.hpp b/librerie/exercise3/zlasdtest/vector/vector.hpp
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diff --git a/librerie/exercise3/zmytest/test.cpp b/librerie/exercise3/zmytest/test.cpp
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diff --git a/librerie/exercise3/zmytest/test.hpp b/librerie/exercise3/zmytest/test.hpp
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