diff --git a/librerie/exercise5/matrix/csr/matrixcsr.cpp b/librerie/exercise5/matrix/csr/matrixcsr.cpp
index 757a07a..4abaddd 100755
--- a/librerie/exercise5/matrix/csr/matrixcsr.cpp
+++ b/librerie/exercise5/matrix/csr/matrixcsr.cpp
@@ -116,10 +116,7 @@ bool MatrixCSR<Data>::operator!=(const MatrixCSR& toCompare) const noexcept{
 
 template <typename Data>
 void MatrixCSR<Data>::RowResize(const ulong& new_row_size){
-  if(new_row_size == 0){
-    Clear();
-  }
-  else if(new_row_size > rows){
+  if(new_row_size > rows){
     R.Resize(new_row_size+1);
     for(ulong i=rows+1 ; i<R.Size(); ++i){
       R[i] = R[rows];
@@ -143,10 +140,7 @@ void MatrixCSR<Data>::RowResize(const ulong& new_row_size){
 
 template <typename Data>
 void MatrixCSR<Data>::ColumnResize(const ulong& new_column_size){
-  if(new_column_size == 0){
-    Clear();
-  }
-  else if(new_column_size < columns){
+  if(new_column_size < columns){
     Node** prev;
     Node* toDelete;
     Node** toModify;
diff --git a/librerie/exercise5/matrix/vec/matrixvec.cpp b/librerie/exercise5/matrix/vec/matrixvec.cpp
index d83a6c6..1ce8d50 100755
--- a/librerie/exercise5/matrix/vec/matrixvec.cpp
+++ b/librerie/exercise5/matrix/vec/matrixvec.cpp
@@ -70,22 +70,17 @@ bool MatrixVec<Data>::operator!=(const MatrixVec& toCompare) const noexcept{
 }
 
 template <typename Data>
-void MatrixVec<Data>::RowResize(const ulong& newdim){
-  if(newdim == 0){
-    Clear();
-  }else{
-    Vector<Data>::Resize(newdim * columns);
-    rows = newdim;
-    size = newdim * columns;
+void MatrixVec<Data>::RowResize(const ulong& new_row_dim){
+  if(new_row_dim != rows){
+    Vector<Data>::Resize(new_row_dim * columns);
+    rows = new_row_dim;
+    size = new_row_dim * columns;
   }
 }
 
 template <typename Data>
 void MatrixVec<Data>::ColumnResize(const ulong& new_column_dim){
-  if(new_column_dim == 0){
-    Clear();
-  }
-  else if(new_column_dim != columns){
+  if(new_column_dim != columns){
     ulong limit = (new_column_dim < columns)? new_column_dim : columns;
     Data* tmp = new Data[rows * new_column_dim]{};
     for(ulong i=0 ; i<rows ; ++i){
diff --git a/librerie/exercise5/zmytest/test.cpp b/librerie/exercise5/zmytest/test.cpp
index c1cd4a1..e59fe76 100755
--- a/librerie/exercise5/zmytest/test.cpp
+++ b/librerie/exercise5/zmytest/test.cpp
@@ -2,7 +2,6 @@
 #include <random>
 #include <iostream>
 
-
 void menu(){
 
   DataType chosenDataType;
@@ -67,32 +66,38 @@ void UseChosenType(Implementation chosenImplementation, DataType chosenDataType)
     if(chosenDataType == DataType::integer){
       MatrixVec<int> mtx;
       mtx = GenerateIntegerMat(mtx);
+      cout<<"\nThe matrix has been randomly generated.\n";
       IntegerFunctions(mtx);
 
     }else if(chosenDataType == DataType::ffloat){
       MatrixVec<float> mtx;
       mtx = GenerateFloatMat(mtx);
+      cout<<"\nThe matrix has been randomly generated.\n";
       FloatFunctions(mtx);
 
     }else if(chosenDataType == DataType::sstring){
       MatrixVec<string> mtx;
       mtx = GenerateStringsMat(mtx);
+      cout<<"\nThe matrix has been randomly generated.\n";
       StringFunctions(mtx);
     }
   }else if(chosenImplementation == Implementation::yale){
     if(chosenDataType == DataType::integer){
       MatrixCSR<int> mtx;
       mtx = GenerateIntegerMat(mtx);
+      cout<<"\nThe matrix has been randomly generated.\n";
       IntegerFunctions(mtx);
 
     }else if(chosenDataType == DataType::ffloat){
       MatrixCSR<float> mtx;
       mtx = GenerateFloatMat(mtx);
+      cout<<"\nThe matrix has been randomly generated.\n";
       FloatFunctions(mtx);
 
     }else if(chosenDataType == DataType::sstring){
       MatrixCSR<string> mtx;
       mtx = GenerateStringsMat(mtx);
+      cout<<"\nThe matrix has been randomly generated.\n";
       StringFunctions(mtx);
     }
   }
@@ -360,7 +365,7 @@ void Double(T& mtx){
   void (*fun)(int&, void*) = MultiplyAnElement;
   int par = 2;
   mtx.MapPreOrder(fun,(void*)&par);
-  cout<<"Done.\n";
+  cout<<" Done.\n";
 }
 void MultiplyAnElement(int& data, void* par){
   data *= *(int*)par;
@@ -371,11 +376,11 @@ void ProductsElementsLessThan(T& mtx){
   int n, acc=1;
   void (*func)(const int&, const void*, void*) = AccumulateProduct;
 
-  cout<<"Multipy all elements of the matrix whose value is less than ";
+  cout<<" Multipy all elements of the matrix whose value is less than ";
   cin>>ws>>n;
 
   mtx.FoldPreOrder(func, (void*)&n, (void*)&acc);
-  cout<<"\nThe result is "<<acc<<endl<<endl;
+  cout<<"\n The result is "<<acc<<endl<<endl;
 
 }
 
@@ -388,10 +393,10 @@ void AccumulateProduct(const int& data, const void* par, void* acc){
 template <template <typename...> class Matrix, typename Data>
 void CheckExistence(Matrix<Data>& mtx){
   Data elementToLookFor;
-  cout<<"\n\nCheck existence in the matrix of: ";
+  cout<<"\n\n Check existence in the matrix of: ";
   cin>>ws;
   cin>>elementToLookFor;
-  cout<<"The element " << ( (mtx.FoldableContainer<Data>::Exists(elementToLookFor))? "does" : "does not") << " exist\n\n";
+  cout<<" The element " << ( (mtx.FoldableContainer<Data>::Exists(elementToLookFor))? "does" : "does not") << " exist\n\n";
 }
 
 template <template <typename...> class Matrix, typename Data>
@@ -524,7 +529,6 @@ T GenerateStringsMat(T& mat){
     }while(column >= n_columns);
     matrix(row,column) = generateRandomString(dist(gen));
   }
-
   return matrix;
 
 }