diff --git a/d04/ex00/Cat.cpp b/d04/ex00/Cat.cpp
index e1eff33..bae88b1 100644
--- a/d04/ex00/Cat.cpp
+++ b/d04/ex00/Cat.cpp
@@ -12,7 +12,7 @@ Cat::Cat() {
 	return;
 }
 
-Cat::Cat( Cat const & src ) {
+Cat::Cat( Cat const & src ) : Animal(src) {
 	std::cout << COPLIEN_COLOR "Cat copy constructor" RESET "\n";
 	*this = src;
 	return;
diff --git a/d04/ex00/Dog.cpp b/d04/ex00/Dog.cpp
index bb66bf2..b9aacb2 100644
--- a/d04/ex00/Dog.cpp
+++ b/d04/ex00/Dog.cpp
@@ -12,7 +12,7 @@ Dog::Dog() {
 	return;
 }
 
-Dog::Dog( Dog const & src ) {
+Dog::Dog( Dog const & src ) : Animal(src) {
 	std::cout << COPLIEN_COLOR "Dog copy constructor" RESET "\n";
 	*this = src;
 	return;
diff --git a/d04/ex00/Makefile b/d04/ex00/Makefile
index 50eca1c..26cc22a 100644
--- a/d04/ex00/Makefile
+++ b/d04/ex00/Makefile
@@ -72,6 +72,9 @@ $(OBJS): $(HEADERS:%=$(D_HEADERS)/%)
 $(NAME): $(OBJS)
 	$(CC) $(OBJS) -o $@ $(LIBS)
 
+leaks: $(NAME)
+	valgrind --leak-check=full --show-leak-kinds=all ./$(NAME)
+
 clean:
 	$(RM_OBJS)
 
diff --git a/d04/ex00/WrongCat.cpp b/d04/ex00/WrongCat.cpp
index 1c27203..4f0f279 100644
--- a/d04/ex00/WrongCat.cpp
+++ b/d04/ex00/WrongCat.cpp
@@ -12,7 +12,7 @@ WrongCat::WrongCat() {
 	return;
 }
 
-WrongCat::WrongCat( WrongCat const & src ) {
+WrongCat::WrongCat( WrongCat const & src ) : WrongAnimal(src) {
 	std::cout << COPLIEN_COLOR "WrongCat copy constructor" RESET "\n";
 	*this = src;
 	return;
diff --git a/d04/ex01/Makefile b/d04/ex01/Makefile
index 5de1a7f..a0f2376 100644
--- a/d04/ex01/Makefile
+++ b/d04/ex01/Makefile
@@ -70,6 +70,9 @@ $(OBJS): $(HEADERS:%=$(D_HEADERS)/%)
 $(NAME): $(OBJS)
 	$(CC) $(OBJS) -o $@ $(LIBS)
 
+leaks: $(NAME)
+	valgrind --leak-check=full --show-leak-kinds=all ./$(NAME)
+
 clean:
 	$(RM_OBJS)
 
diff --git a/d04/ex01/burn b/d04/ex01/burn
deleted file mode 100755
index 4345fd3..0000000
Binary files a/d04/ex01/burn and /dev/null differ
diff --git a/d04/ex02/Makefile b/d04/ex02/Makefile
index fd3eed7..41d7f5a 100644
--- a/d04/ex02/Makefile
+++ b/d04/ex02/Makefile
@@ -9,10 +9,6 @@ NAME      = pure
 #TYPE      = c
 TYPE      = cpp
 
-ifndef TYPE
-echo hello
-endif
-
 ifeq "$(TYPE)" "c"
   CC      = c
   EXT     = c
@@ -74,6 +70,9 @@ $(OBJS): $(HEADERS:%=$(D_HEADERS)/%)
 $(NAME): $(OBJS)
 	$(CC) $(OBJS) -o $@ $(LIBS)
 
+leaks: $(NAME)
+	valgrind --leak-check=full --show-leak-kinds=all ./$(NAME)
+
 clean:
 	$(RM_OBJS)
 
diff --git a/d04/ex02/a.out b/d04/ex02/a.out
deleted file mode 100755
index 9701802..0000000
Binary files a/d04/ex02/a.out and /dev/null differ
diff --git a/d04/ex02/main.cpp b/d04/ex02/main.cpp
index 8292f33..e83576d 100644
--- a/d04/ex02/main.cpp
+++ b/d04/ex02/main.cpp
@@ -17,31 +17,31 @@ int	main() {
 		Animal* j = new Cat("I am just a cat");
 		
 		std::cout << std::endl;
-		std::cout << "cat i : ";
+		std::cout << B_BLUE "cat i : " RESET;
 		i->getBrain()->printIdea(0);
-		std::cout << "cat j : ";
+		std::cout << B_BLUE "cat j : " RESET;
 		j->getBrain()->printIdea(0);
 		
-		std::cout << "\n*i = *j\n";
+		std::cout << "\n" B_BLUE "*i = *j" RESET "\n";
 		*i = *j;
 		
-		std::cout << "cat i : ";
+		std::cout << B_BLUE "cat i : " RESET;
 		i->getBrain()->printIdea(0);
-		std::cout << "cat j : ";
+		std::cout << B_BLUE "cat j : " RESET;
 		j->getBrain()->printIdea(0);
 		
-		std::cout << "\nj->getBrain->putIdea(\"I am not a cat\")\n";
+		std::cout << "\n" B_BLUE "j->getBrain->putIdea(\"I am not a cat\")" RESET "\n";
 		j->getBrain()->putIdea(0, "I am not a cat");;
 		
-		std::cout << "cat i : ";
+		std::cout << B_BLUE "cat i : " RESET;
 		i->getBrain()->printIdea(0);
-		std::cout << "cat j : ";
+		std::cout << B_BLUE "cat j : " RESET;
 		j->getBrain()->printIdea(0);
 		
 		std::cout << std::endl;
-		std::cout << "delete i\n";
+		std::cout << B_BLUE "delete i" RESET "\n";
 		delete i;
-		std::cout << "delete j\n";
+		std::cout << B_BLUE "delete j" RESET "\n";
 		delete j;
 	}
 
diff --git a/d04/ex02/pure b/d04/ex02/pure
deleted file mode 100755
index 956ca8d..0000000
Binary files a/d04/ex02/pure and /dev/null differ
diff --git a/d04/ex02/test_assignement.cpp b/d04/ex02/test_assignement.cpp
deleted file mode 100644
index f01af24..0000000
--- a/d04/ex02/test_assignement.cpp
+++ /dev/null
@@ -1,38 +0,0 @@
-# include <iostream>
-# include <string>
-
-class Animal {
-public:
-	virtual Animal &	operator=( Animal const & rhs ) {
-		std::cout << "Animal operator=\n";
-		return *this;
-	}
-};
-
-class Cat : public Animal {
-public:
-	Cat &	operator=( Cat const & rhs ) {
-		Animal::operator=(rhs);
-		std::cout << "Cat operator=\n";
-		return *this;
-	}
-	Cat &	operator=( Animal const & rhs ) {
-		Animal::operator=(rhs);
-		std::cout << "Cat operator=\n";
-		return *this;
-	}
-	void catSpeak() {std::cout << "I am a cat\n";}
-};
-
-int	main() {
-	Animal* i = new Cat();
-	Animal* j = new Cat();
-	
-	i->catSpeak();
-	j->catSpeak();
-	*i = *j;
-	
-	delete i;
-	delete j;
-}
-
diff --git a/d04/ex03/Makefile b/d04/ex03/Makefile
deleted file mode 100644
index 710467d..0000000
--- a/d04/ex03/Makefile
+++ /dev/null
@@ -1,82 +0,0 @@
-# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
-#               . name = value \          . += append to a variable   #
-#   VARIABLES   .        value            . != set result of command  #
-#               . name is case sensitive  . ?= set if not already set #
-# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
-
-NAME      = materia
-
-#TYPE      = c
-TYPE      = cpp
-
-ifeq "$(TYPE)" "c"
-  CC      = c
-  EXT     = c
-else ifeq "$(TYPE)" "cpp"
-  CC      = c++
-  EXT     = cpp
-endif
-
-CFLAGS    = -Wall -Wextra -Werror $(INCLUDES)
-ifeq "$(TYPE)" "cpp"
-  CFLAGS += -std=c++98
-endif
-
-VPATH     = $(D_SRCS)
-
-LIBS      =
-
-INCLUDES  = -I$(D_HEADERS)
-
-D_SRCS    = srcs
-SRCS      = main.cpp \
-			Animal.cpp \
-			Dog.cpp \
-			Cat.cpp \
-			Brain.cpp
-
-D_HEADERS = headers
-HEADERS   = Animal.hpp \
-			Dog.hpp \
-			Cat.hpp \
-			Brain.hpp
-
-D_OBJS    = builds
-OBJS      = $(SRCS:%.$(EXT)=$(D_OBJS)/%.o)
-
-ifeq "$(D_OBJS)" "."
-  RM_OBJS = rm -f $(OBJS)
-else
-  RM_OBJS = rm -rf $(D_OBJS)
-endif
-
-
-# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
-#             .   target: prerequisites   .   $@ : target             #
-#    RULES    .           recipe          .   $< : 1st prerequisite   #
-#             .           recipe          .   $^ : all prerequisites  #
-# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
-
-all: $(NAME)
-
-$(D_OBJS)/%.o: %.$(EXT) | $(D_OBJS)
-	$(CC) $(CFLAGS) -c $< -o $@
-
-$(D_OBJS):
-	mkdir $@
-
-$(OBJS): $(HEADERS:%=$(D_HEADERS)/%)
-
-$(NAME): $(OBJS)
-	$(CC) $(OBJS) -o $@ $(LIBS)
-
-clean:
-	$(RM_OBJS)
-
-fclean: clean
-	rm -f $(NAME)
-
-re: fclean all
-
-.PHONY : all clean fclean re
-
diff --git a/d04/ex03/headers/AMateria.hpp b/d04/ex03/headers/AMateria.hpp
deleted file mode 100644
index 096f251..0000000
--- a/d04/ex03/headers/AMateria.hpp
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef AMATERIA_HPP
-# define AMATERIA_HPP
-
-# include <iostream>
-
-#include "ICharacter.hpp"
-
-class AMateria {
-
-public:
-	AMateria(std::string const & type);
-	virtual ~AMateria();
-
-	std::string const &	getType() const; //Returns the materia type
-
-	virtual AMateria*	clone() const = 0;
-	virtual void		use(ICharacter& target);
-
-protected:
-	std::string	_type;
-
-};
-
-#endif
diff --git a/d04/ex03/headers/Character.hpp b/d04/ex03/headers/Character.hpp
deleted file mode 100644
index 73e2c10..0000000
--- a/d04/ex03/headers/Character.hpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef CHARACTER_HPP
-# define CHARACTER_HPP
-
-#include "ICharacter.hpp"
-
-class Character : public ICharacter {
-
-public:
-	Character();
-	Character( Character const & src );
-	~Character();
-	Character & operator=( Character const & rhs );
-
-private:
-
-};
-
-#endif
diff --git a/d04/ex03/headers/Cure.hpp b/d04/ex03/headers/Cure.hpp
deleted file mode 100644
index 1ca03c8..0000000
--- a/d04/ex03/headers/Cure.hpp
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef CURE_HPP
-# define CURE_HPP
-
-#include "AMateria.hpp"
-
-class Cure : public AMateria {
-
-public:
-	Cure();
-	Cure( Cure const & src );
-	~Cure();
-	Cure & operator=( Cure const & rhs );
-
-private:
-
-};
-
-#endif
-
diff --git a/d04/ex03/headers/ICharacter.hpp b/d04/ex03/headers/ICharacter.hpp
deleted file mode 100644
index 11fa9fc..0000000
--- a/d04/ex03/headers/ICharacter.hpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef ICE_HPP
-# define ICE_HPP
-
-class ICharacter {
-
-public:
-	virtual ~ICharacter() {}
-	virtual std::string const & getName() const = 0;
-	virtual void equip(AMateria* m) = 0;
-	virtual void unequip(int idx) = 0;
-	virtual void use(int idx, ICharacter& target) = 0;
-};
-
-#endif
-
diff --git a/d04/ex03/headers/Ice.hpp b/d04/ex03/headers/Ice.hpp
deleted file mode 100644
index 52e3419..0000000
--- a/d04/ex03/headers/Ice.hpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef ICE_HPP
-# define ICE_HPP
-
-#include "AMateria.hpp"
-
-class Ice : public AMateria {
-
-public:
-	Ice();
-	Ice( Ice const & src );
-	~Ice();
-	Ice & operator=( Ice const & rhs );
-
-private:
-
-};
-
-#endif
diff --git a/d04/ex03/main.cpp b/d04/ex03/main.cpp
deleted file mode 100644
index 245e05a..0000000
--- a/d04/ex03/main.cpp
+++ /dev/null
@@ -1,32 +0,0 @@
-#include "AMateria.hpp"
-#include "Ice.hpp"
-#include "Cure.hpp"
-#include "ICharacter"
-#include "IMateriaSource"
-
-int	main() {
-
-	IMateriaSource* src = new MateriaSource();
-	src->learnMateria(new Ice());
-	src->learnMateria(new Cure());
-
-	ICharacter* me = new Character("me");
-
-	AMateria* tmp;
-	tmp = src->createMateria("ice");
-	me->equip(tmp);
-	tmp = src->createMateria("cure");
-	me->equip(tmp);
-
-	ICharacter* bob = new Character("bob");
-
-	me->use(0, *bob);
-	me->use(1, *bob);
-
-	delete bob;
-	delete me;
-	delete src;
-
-	return 0;
-}
-
diff --git a/d04/ex03/srcs/AMateria.cpp b/d04/ex03/srcs/AMateria.cpp
deleted file mode 100644
index fca370d..0000000
--- a/d04/ex03/srcs/AMateria.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "AMateria.hpp"
-
-AMateria::AMateria(std::string const & type) {
-	_type = type;
-}
-
-std::string const & AMateria::getType() const {
-	return _type;
-}
-
-virtual AMateria * AMateria::clone() const {
-	AMateria clone = new AMateria;
-	return clone;
-}
diff --git a/d04/ex03/srcs/Cure.cpp b/d04/ex03/srcs/Cure.cpp
deleted file mode 100644
index d804128..0000000
--- a/d04/ex03/srcs/Cure.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include "Cure.hpp"
-
-Cure::Cure() : _type("cure") {}
-
-Cure::Cure( Cure const & src ) {
-	*this = src
-}
-
-Cure & Cure::operator=( Cure const & rhs ) {
-	return *this;
-}
-
-virtual void Ice::use(ICharacter & target) {
-	std::cout << "* heals " << target.name << "’s wounds *"
-}
diff --git a/d04/ex03/srcs/Ice.cpp b/d04/ex03/srcs/Ice.cpp
deleted file mode 100644
index 06f7379..0000000
--- a/d04/ex03/srcs/Ice.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include "Ice.hpp"
-
-Ice::Ice() : _type("ice") {}
-
-Ice::Ice( Ice const & src ) {
-	*this = src
-}
-
-Ice & Ice::operator=( Ice const & rhs ) {
-	return *this;
-}
-
-virtual void Ice::use(ICharacter & target) {
-	std::cout << "* shoots an ice bolt at " << target.name << " *"
-}