diff --git a/livres/ex_cpp/Makefile b/livres/ex_cpp/Makefile
new file mode 100644
index 0000000..21bcd90
--- /dev/null
+++ b/livres/ex_cpp/Makefile
@@ -0,0 +1,16 @@
+CXX = c++
+CXXFLAGS = -Wall -g
+LDFLAGS= -lm
+
+SOURCE_POINTS= points.cpp main.cpp
+
+all: points
+
+points: $(SOURCE_POINTS)
+	$(CXX) $(CXXFLAGS) -o $@ $(SOURCE_POINTS) $(LDFLAGS)
+
+run: points
+	./points
+
+clean:
+	rm -f *.o ./points
diff --git a/livres/ex_cpp/main.cpp b/livres/ex_cpp/main.cpp
new file mode 100644
index 0000000..93da3ca
--- /dev/null
+++ b/livres/ex_cpp/main.cpp
@@ -0,0 +1,16 @@
+#include "points.h"
+#include <iostream>
+
+int main(int argc, char *argv[])
+{
+	Points p(5,5);
+	std::cout << p.abscisse() << ' ' << p.ordonnee() << std::endl;
+
+	std::cout << p.rho() << ' ' << p.theta() << std::endl;
+
+	p.deplace(3.1, 2);
+	std::cout << p.abscisse() << ' ' << p.ordonnee() << std::endl;
+
+	
+	return 0;
+}
diff --git a/livres/ex_cpp/points b/livres/ex_cpp/points
new file mode 100755
index 0000000..69db7c4
Binary files /dev/null and b/livres/ex_cpp/points differ
diff --git a/livres/ex_cpp/points.cpp b/livres/ex_cpp/points.cpp
new file mode 100644
index 0000000..027a898
--- /dev/null
+++ b/livres/ex_cpp/points.cpp
@@ -0,0 +1,39 @@
+#include "points.h"
+#include "math.h"
+
+Points::Points(float m_x, float m_y)
+: x(m_x), y(m_y){}
+
+// SETTERS
+
+void Points::deplace(float m_dx, float m_dy){
+	x += m_dx;
+	y += m_dy;
+}
+
+void Points::homothetie(float k){
+	x *= k;
+	y *= k;
+}
+
+void Points::rotation(float angle){
+
+}
+
+// GETTERS
+
+float Points::abscisse(){
+	return x;
+}
+
+float Points::ordonnee(){
+	return y;
+}
+
+float Points::rho(){
+	return sqrt(x*x + y*y);
+}
+
+float Points::theta(){
+	return atan(y/x);
+}
diff --git a/livres/ex_cpp/points.h b/livres/ex_cpp/points.h
new file mode 100644
index 0000000..6bfcf42
--- /dev/null
+++ b/livres/ex_cpp/points.h
@@ -0,0 +1,24 @@
+#ifndef POINTS_H
+#define POINTS_H
+
+class Points
+{
+private:
+	float x, y;
+
+
+public:
+	Points(float x, float y);
+
+	void deplace(float, float);
+	void homothetie(float);
+	void rotation(float);
+
+	float abscisse();
+	float ordonnee();
+	float rho();
+	float theta();
+
+};
+
+#endif /* POINTS_H */
diff --git a/renforcement/entrainement_0311/entrainement0311.pdf b/renforcement/entrainement_0311/entrainement0311.pdf
new file mode 100644
index 0000000..0f4578a
Binary files /dev/null and b/renforcement/entrainement_0311/entrainement0311.pdf differ
diff --git a/renforcement/entrainement_0311/ex1.py b/renforcement/entrainement_0311/ex1.py
new file mode 100644
index 0000000..9b32df0
--- /dev/null
+++ b/renforcement/entrainement_0311/ex1.py
@@ -0,0 +1,27 @@
+
+def find(chambre, etiquette):
+    """Find all occurence of etiquette in chambre and return a list of all his position
+
+    :chambre: matrice of item in chambre
+    :etiquette: Element to find in chambre as string
+    :returns: list of positions
+
+    """
+    ret = list()
+    for x in range(len(chambre)):
+        for y in range(len(chambre[x])):
+            if etiquette == chambre[x][y]:
+                ret.append((x,y))
+    return ret
+
+# Tests
+if __name__ == "__main__":
+    chambre = [
+            [ "A" , "A" , "B" , "D"  ],
+            [ "C" , "P" , "U" , "A"  ],
+            [ "M" , "O" , "N" , "S " ],
+            [ "A" , "B" , "D" , "A"  ]
+             ]
+    print(find(chambre, 'A'), "should print 5 elemets")
+    print(find(chambre, 'C'), "Should print 1 element")
+    print(find(chambre, 'Elephant'), "Should print nothing")
diff --git a/renforcement/entrainement_0311/ex2.py b/renforcement/entrainement_0311/ex2.py
new file mode 100644
index 0000000..c294d9a
--- /dev/null
+++ b/renforcement/entrainement_0311/ex2.py
@@ -0,0 +1,32 @@
+def champ():
+    """Create a field, ask for size, amount of orni and position of said orni
+    :returns: number of plan 
+    """
+    (N, M) = tuple(input("Size Quantity:").split()[:2])
+    field = [['🌱' for y in range(int(N))] for x in range(int(N))]
+    for i in range(int(M)):
+        (_X, _Y) = tuple(input(f"(orni {i}) X Y:").split()[:2])
+        field[int(_Y)][int(_X)] = '🦝'
+
+    for x in range(int(N)):
+        for y in range(int(N)):
+            if field[y][x] == '🦝':
+                for i in range(x-1, x+2):
+                    for j in range(y-1, y+2):
+                        if field[j][i] == '🥕':
+                            field[j][i] = '💀'
+                        if field[j][i] == '🌱':
+                            field[j][i] = '🥕'
+    return field
+
+def draw_field(field):
+    """draw a field """
+    for x in range(len(field)):
+        for y in range(len(field[x])):
+            print(field[x][y], end=' ')
+        print()
+
+
+
+if __name__ == "__main__":
+    draw_field(champ())
diff --git a/renforcement/entrainement_0311/ex3.py b/renforcement/entrainement_0311/ex3.py
new file mode 100644
index 0000000..587f10f
--- /dev/null
+++ b/renforcement/entrainement_0311/ex3.py
@@ -0,0 +1,7 @@
+def check_ticket(ticket):
+    while(:)
+    tosumuup = [int(i)for i in list(ticket)]
+    return sum(tosumuup)
+
+if __name__ == "__main__":
+    print(check_ticket('999999'))
diff --git a/renforcement/entrainement_0311/ex4.py b/renforcement/entrainement_0311/ex4.py
new file mode 100644
index 0000000..c22971a
--- /dev/null
+++ b/renforcement/entrainement_0311/ex4.py
@@ -0,0 +1,24 @@
+
+def permutation(mot):
+    """find all permutation of a word
+
+    :mot: TODO
+    :returns: list of all permutations
+
+    """
+    return permutation_rec('' , mot)
+
+def permutation_rec(pre, post):
+    print(pre, post)
+    if (post == ''):
+        return pre
+    ret = list()
+    for i in list(post):
+        _post = list(post)
+        _post.remove(i)
+        ret.append(permutation_rec(pre + i, str(_post)))
+    return ret
+
+if __name__ == "__main__":
+    permutation('abc')
+
diff --git a/renforcement/ex1.py b/renforcement/renforcement_2510/ex1.py
similarity index 100%
rename from renforcement/ex1.py
rename to renforcement/renforcement_2510/ex1.py
diff --git a/renforcement/ex2.py b/renforcement/renforcement_2510/ex2.py
similarity index 100%
rename from renforcement/ex2.py
rename to renforcement/renforcement_2510/ex2.py
diff --git a/renforcement/ex3.py b/renforcement/renforcement_2510/ex3.py
similarity index 100%
rename from renforcement/ex3.py
rename to renforcement/renforcement_2510/ex3.py
diff --git a/renforcement/renforcement.pdf b/renforcement/renforcement_2510/renforcement.pdf
similarity index 100%
rename from renforcement/renforcement.pdf
rename to renforcement/renforcement_2510/renforcement.pdf
diff --git a/renforcement/renforcement.txt b/renforcement/renforcement_2510/renforcement.txt
similarity index 99%
rename from renforcement/renforcement.txt
rename to renforcement/renforcement_2510/renforcement.txt
index e8bbd22..91ea0ed 100644
--- a/renforcement/renforcement.txt
+++ b/renforcement/renforcement_2510/renforcement.txt
@@ -146,4 +146,4 @@ nom).
 
 5
 
-
\ No newline at end of file
+