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diff --git a/3InformationTheory/HuffmanGruffaloNightmare.tex b/3InformationTheory/HuffmanGruffaloNightmare.tex
new file mode 100644
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--- /dev/null
+++ b/3InformationTheory/HuffmanGruffaloNightmare.tex
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+% -*- coding: utf-8; -*-
+\documentclass[a4paper,6pt,landscape]{article}
+%\usepackage{pdflscape}
+%\usepackage{sagetex}
+
+\usepackage[francais]{babel}
+%\usepackage[latin1]{inputenc}
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{lmodern}
+\usepackage{graphics,graphicx}
+\usepackage{url}
+\usepackage{hyperref}
+\usepackage[pdftex,usenames,dvipsnames]{xcolor}
+%%% decommenter si tikz necessaire
+\usepackage{tikz}
+\usetikzlibrary[decorations.pathmorphing]
+\usetikzlibrary[decorations.pathreplacing]
+\usetikzlibrary{backgrounds}
+\usetikzlibrary{positioning}
+\usetikzlibrary{arrows}
+\usetikzlibrary[backgrounds]
+\usetikzlibrary{automata,positioning,arrows.meta}
+%%% 
+\usepackage{tcolorbox}
+\tcbuselibrary{skins,breakable}
+\tcbset{textmarker/.style={%
+    % skin=enhancedmiddlejigsaw,
+    breakable,
+    parbox=false,
+    boxrule=0mm,leftrule=5mm,rightrule=5mm,boxsep=0mm,arc=0mm,outer arc=0mm,
+    left=3mm,right=3mm,top=1mm,bottom=1mm,toptitle=1mm,bottomtitle=1mm,oversize}}
+\newtcolorbox{yellow}{textmarker,colback=yellow!5!white,colframe=yellow}
+\newtcolorbox{orange}{textmarker,colback=DarkOrange!5!white,
+  colframe=DarkOrange!75!yellow}
+\newtcolorbox{red}{textmarker,colback=red!5!white,colframe=red}
+\newtcolorbox{blue}{textmarker,colback=DeepSkyBlue!5!white,colframe=DeepSkyBlue}
+\newtcolorbox{green}{textmarker,colback=Chartreuse!5!white,colframe=Chartreuse}
+\newtcolorbox{rainbow}{textmarker,interior hidden,
+  frame style={top color=blue,bottom color=red,middle color=green}}
+\newtcbox{\fluo}[1][yellow]{on line,
+arc=7pt,colback=#1!10!white,colframe=#1!50!black,
+before upper={\rule[-3pt]{0pt}{10pt}},boxrule=1pt,
+boxsep=0pt,left=6pt,right=6pt,top=2pt,bottom=2pt}
+%%%
+
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+
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+\usepackage{a4wide}
+\usepackage{paralist}
+\usepackage{fancyhdr}
+\usepackage{colortbl}
+\usepackage{cancel}    %%% 
+\usepackage{amssymb,amsmath,amsthm}
+
+%%% On charge le paquet ifthen pout faire des tests
+\usepackage{ifthen}
+%%% On définit un compteur numérique pour l'année
+\newcounter{theyear}
+\setcounter{theyear}{\number\year}
+%%% Une macro pour écrire l'année académique automatiquement en
+%%% fonction du mois en cours
+\newcommand{\academicyear}[0]{
+  \ifthenelse{\number\month<8}
+  {\addtocounter{theyear}{-1}\arabic{theyear}\addtocounter{theyear}{-1999}\,-\arabic{theyear}}%
+  {\arabic{theyear}\addtocounter{theyear}{-1999}\,-\arabic{theyear}}%
+}%
+
+%%% mettre les macros à la racine du cours et ajuster en conséquence
+%%% pour éviter d'avoir plus d'une copie des macros par cours.
+%\input{MyMacros.tex}
+%\input{SetColors.tex}
+
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+
+%%%%%%%%%%%%%%%%%%%%%%%% 
+%%% Def d'environement de Math (Malika)
+%%%%%%%%%%%%%%%%%%%%%%%%
+\theoremstyle{plain}
+\newtheorem*{theo}{Théorème}
+\newtheorem*{cons}{Conséquence}
+\newtheorem*{conss}{Conséquences}
+
+
+\theoremstyle{definition}
+\newtheorem{exo}{Exercice}
+\newtheorem*{defi}{Définition}
+\newtheorem*{probleme}{Problème}
+\newtheorem*{reponse}{Réponse}
+
+
+\theoremstyle{remark}
+\newtheorem*{exemple}{Exemple}
+\newtheorem*{remarque}{Remarque}
+\newtheorem*{remarques}{Remarques}
+\newtheorem*{prop}{Propriété}
+\newtheorem*{props}{Propriétés}
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%% 
+%%% Macros diverses (Malika)
+%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+\newcommand{\raus}[1]{}
+\AtBeginDocument{
+\renewcommand{\labelitemi}{\textbullet}
+\renewcommand{\labelitemii}{$\circ$}
+}
+
+%\pagestyle{fancy}
+\fancyhf{}
+\fancyhead{
+\begin{minipage}{16cm}
+\hspace{-2cm}
+Nom : \fbox{\begin{minipage}{6cm}\hfill\vspace{.7cm}\end{minipage}}
+\hfill
+Pr\'enom : \fbox{\begin{minipage}{4cm}\hfill\vspace{.7cm}\end{minipage}}
+\hfill
+Groupe : \fbox{\begin{minipage}{.7cm}\hfill\vspace{.7cm}\end{minipage}}
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+}
+\fancyfoot[C]{Page {\large\thepage}}
+
+
+%%%%%%%%%%%%%%%%%%%%%%%% 
+%%% Quelques paquets gérant la correction / espace pour la reponse
+%%%%%%%%%%%%%%%%%%%%%%%%
+\usepackage{comment}
+%%% Pour afficher la correction et exclure les boites pour la reponse
+\includecomment{correction}
+\excludecomment{EspaceReponse}
+%%% Pour version cachant la correction et incluant l'espace pour la reponse
+%\excludecomment{correction}  
+%\includecomment{EspaceReponse}
+
+
+
+
+%%%
+\begin{document}
+\
+\vspace{.2cm}
+
+{\small
+\noindent IUT Sénart-Fontainebleau, UPEC
+\hfill
+Florent Madelaine
+
+\noindent Information Theory
+\hfill
+% intervenant 2
+
+\noindent MD1N  \hfill\noindent\academicyear{}
+
+}
+\vspace{.7cm}
+
+\hrule
+\vspace{.3cm}
+
+\begin{center}
+
+{\textbf{\Large
+    Huffman Gruffalo Nightmare
+}}
+\vspace{.1cm}
+
+\end{center}
+\vspace{.3cm}
+
+\hrule
+\vspace{.3cm}
+
+\section*{Le texte qu'on souhaite compresser avec la méthode de Huffman}
+
+\begin{quotation}
+  A mouse took a stroll through the deep dark wood. A fox saw the
+  mouse and the mouse looked good. “Where are you going to, little
+  brown mouse? Come and have lunch in my underground house.”
+\end{quotation}
+
+\section*{La méthode}
+\paragraph{étape 1 (au tableau)}
+On compte la fréquence des lettres.
+Le moins fréquent est à traiter en premier.
+
+\paragraph{étape 2 (au tableau)}
+On construit l'arbre de Huffman.
+Les lettres les moins fréquentes se retrouvent en base de l'arbre,
+donc avec un code plus long.
+
+
+\paragraph{étape 3 : compression}.
+On note les labels de la racine vers la feuille qui est le code de chaque lettre.
+
+\begin{verbatim}
+A devient : 0100
+(j'écris _ pour l'espace)
+_ devient : 111
+m devient : 10 101
+o devient : 100
+u devient : 0 111
+s devient : 10 111
+e devient : 001
+_ devient : 111
+t devient : 000 1
+o devient : 100
+o devient : 100
+k devient : 101 001
+_ devient : 111
+a devient : ????
+_ devient : 111
+\end{verbatim}
+
+% %:-+-+-+- Engendré par : http://math.et.info.free.fr/TikZ/Arbre/
+% \begin{center}
+% % Racine à Gauche, développement vers la droite
+% \begin{tikzpicture}[xscale=1,yscale=1]
+% % Styles (MODIFIABLES)
+% \tikzstyle{fleche}=[->,>=latex,thick]
+% \tikzstyle{noeud}=[fill=yellow,circle,draw]
+% \tikzstyle{feuille}=[fill=yellow,circle,draw]
+% \tikzstyle{etiquette}=[midway,fill=white,draw]
+% % Dimensions (MODIFIABLES)
+% \def\DistanceInterNiveaux{3}
+% \def\DistanceInterFeuilles{2}
+% % Dimensions calculées (NON MODIFIABLES)
+% \def\NiveauA{(0)*\DistanceInterNiveaux}
+% \def\NiveauB{(1.875)*\DistanceInterNiveaux}
+% \def\NiveauC{(3.625)*\DistanceInterNiveaux}
+% \def\NiveauD{(5.25)*\DistanceInterNiveaux}
+% \def\NiveauE{(6.75)*\DistanceInterNiveaux}
+% \def\NiveauF{(8.125)*\DistanceInterNiveaux}
+% \def\NiveauG{(9.375)*\DistanceInterNiveaux}
+% \def\NiveauH{(10.5)*\DistanceInterNiveaux}
+% \def\NiveauI{(11.5)*\DistanceInterNiveaux}
+% \def\InterFeuilles{(-1)*\DistanceInterFeuilles}
+% % Noeuds (MODIFIABLES : Styles et Coefficients d'InterFeuilles)
+% \node[noeud] (R) at ({\NiveauA},{(13.5)*\InterFeuilles}) {$Tous$};
+% \node[noeud] (Ra) at ({\NiveauB},{(3.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Raa) at ({\NiveauC},{(1)*\InterFeuilles}) {$$};
+% \node[noeud] (Raaa) at ({\NiveauD},{(0.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Raaaa) at ({\NiveauE},{(0)*\InterFeuilles}) {$H$};
+% \node[feuille] (Raaab) at ({\NiveauE},{(1)*\InterFeuilles}) {$T$};
+% \node[feuille] (Raab) at ({\NiveauD},{(2)*\InterFeuilles}) {$E$};
+% \node[noeud] (Rab) at ({\NiveauC},{(5)*\InterFeuilles}) {$$};
+% \node[noeud] (Raba) at ({\NiveauD},{(4)*\InterFeuilles}) {$$};
+% \node[feuille] (Rabaa) at ({\NiveauE},{(3)*\InterFeuilles}) {$A$};
+% \node[noeud] (Rabab) at ({\NiveauE},{(4.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rababa) at ({\NiveauF},{(4)*\InterFeuilles}) {$W$};
+% \node[feuille] (Rababb) at ({\NiveauF},{(5)*\InterFeuilles}) {$G$};
+% \node[noeud] (Rabb) at ({\NiveauD},{(6.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rabba) at ({\NiveauE},{(6)*\InterFeuilles}) {$D$};
+% \node[feuille] (Rabbb) at ({\NiveauE},{(7)*\InterFeuilles}) {$U$};
+% \node[noeud] (Rb) at ({\NiveauB},{(17.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rba) at ({\NiveauC},{(10.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbaa) at ({\NiveauD},{(8)*\InterFeuilles}) {$O$};
+% \node[noeud] (Rbab) at ({\NiveauD},{(11)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbaba) at ({\NiveauE},{(10)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbabaa) at ({\NiveauF},{(9.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbabaaa) at ({\NiveauG},{(9)*\InterFeuilles}) {$.$};
+% \node[feuille] (Rbabaab) at ({\NiveauG},{(10)*\InterFeuilles}) {$K$};
+% \node[feuille] (Rbabab) at ({\NiveauF},{(11)*\InterFeuilles}) {$M$};
+% \node[noeud] (Rbabb) at ({\NiveauE},{(12.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbabba) at ({\NiveauF},{(12)*\InterFeuilles}) {$L$};
+% \node[feuille] (Rbabbb) at ({\NiveauF},{(13)*\InterFeuilles}) {$S$};
+% \node[noeud] (Rbb) at ({\NiveauC},{(20.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbba) at ({\NiveauD},{(20)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbaa) at ({\NiveauE},{(16.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbaaa) at ({\NiveauF},{(16)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbaaaa) at ({\NiveauG},{(14.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbaaaaa) at ({\NiveauH},{(14)*\InterFeuilles}) {$Y$};
+% \node[feuille] (Rbbaaaab) at ({\NiveauH},{(15)*\InterFeuilles}) {$"$};
+% \node[noeud] (Rbbaaab) at ({\NiveauG},{(17)*\InterFeuilles}) {$Nœud36$};
+% \node[noeud] (Rbbaaaba) at ({\NiveauH},{(16.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbaaabaa) at ({\NiveauI},{(16)*\InterFeuilles}) {$F$};
+% \node[feuille] (Rbbaaabab) at ({\NiveauI},{(17)*\InterFeuilles}) {$X$};
+% \node[feuille] (Rbbaaabb) at ({\NiveauH},{(18)*\InterFeuilles}) {$B$};
+% \node[feuille] (Rbbaab) at ({\NiveauF},{(19)*\InterFeuilles}) {$N$};
+% \node[noeud] (Rbbab) at ({\NiveauE},{(23)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbaba) at ({\NiveauF},{(20)*\InterFeuilles}) {$R$};
+% \node[noeud] (Rbbabb) at ({\NiveauF},{(23.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbabba) at ({\NiveauG},{(22.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbabbaa) at ({\NiveauH},{(21.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbabbaaa) at ({\NiveauI},{(21)*\InterFeuilles}) {$P$};
+% \node[feuille] (Rbbabbaab) at ({\NiveauI},{(22)*\InterFeuilles}) {$V$};
+% \node[noeud] (Rbbabbab) at ({\NiveauH},{(23.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbabbaba) at ({\NiveauI},{(23)*\InterFeuilles}) {$?$};
+% \node[feuille] (Rbbabbabb) at ({\NiveauI},{(24)*\InterFeuilles}) {$,$};
+% \node[noeud] (Rbbabbb) at ({\NiveauG},{(25.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbabbba) at ({\NiveauH},{(25)*\InterFeuilles}) {$C$};
+% \node[feuille] (Rbbabbbb) at ({\NiveauH},{(26)*\InterFeuilles}) {$I$};
+% \node[feuille] (Rbbb) at ({\NiveauD},{(27)*\InterFeuilles}) {$espace$};
+% % Arcs (MODIFIABLES : Styles)
+% \draw[fleche] (R)--(Ra) node[etiquette] {$0$};
+% \draw[fleche] (Ra)--(Raa) node[etiquette] {$0$};
+% \draw[fleche] (Raa)--(Raaa) node[etiquette] {$0$};
+% \draw[fleche] (Raaa)--(Raaaa) node[etiquette] {$0$};
+% \draw[fleche] (Raaa)--(Raaab) node[etiquette] {$1$};
+% \draw[fleche] (Raa)--(Raab) node[etiquette] {$1$};
+% \draw[fleche] (Ra)--(Rab) node[etiquette] {$1$};
+% \draw[fleche] (Rab)--(Raba) node[etiquette] {$0$};
+% \draw[fleche] (Raba)--(Rabaa) node[etiquette] {$0$};
+% \draw[fleche] (Raba)--(Rabab) node[etiquette] {$1$};
+% \draw[fleche] (Rabab)--(Rababa) node[etiquette] {$0$};
+% \draw[fleche] (Rabab)--(Rababb) node[etiquette] {$A$};
+% \draw[fleche] (Rab)--(Rabb) node[etiquette] {$1$};
+% \draw[fleche] (Rabb)--(Rabba) node[etiquette] {$0$};
+% \draw[fleche] (Rabb)--(Rabbb) node[etiquette] {$1$};
+% \draw[fleche] (R)--(Rb) node[etiquette] {$1$};
+% \draw[fleche] (Rb)--(Rba) node[etiquette] {$0$};
+% \draw[fleche] (Rba)--(Rbaa) node[etiquette] {$0$};
+% \draw[fleche] (Rba)--(Rbab) node[etiquette] {$1$};
+% \draw[fleche] (Rbab)--(Rbaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbaba)--(Rbabaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbabaa)--(Rbabaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbabaa)--(Rbabaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbaba)--(Rbabab) node[etiquette] {$1$};
+% \draw[fleche] (Rbab)--(Rbabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbabb)--(Rbabba) node[etiquette] {$0$};
+% \draw[fleche] (Rbabb)--(Rbabbb) node[etiquette] {$1$};
+% \draw[fleche] (Rb)--(Rbb) node[etiquette] {$1$};
+% \draw[fleche] (Rbb)--(Rbba) node[etiquette] {$0$};
+% \draw[fleche] (Rbba)--(Rbbaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaa)--(Rbbaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaa)--(Rbbaaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaa)--(Rbbaaaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaa)--(Rbbaaaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaaa)--(Rbbaaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaaab)--(Rbbaaaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaba)--(Rbbaaabaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaba)--(Rbbaaabab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaaab)--(Rbbaaabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaa)--(Rbbaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbba)--(Rbbab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbab)--(Rbbaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbab)--(Rbbabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabb)--(Rbbabba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabba)--(Rbbabbaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbaa)--(Rbbabbaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbaa)--(Rbbabbaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabba)--(Rbbabbab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabbab)--(Rbbabbaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbab)--(Rbbabbabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabb)--(Rbbabbb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabbb)--(Rbbabbba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbb)--(Rbbabbbb) node[etiquette] {$1$};
+% \draw[fleche] (Rbb)--(Rbbb) node[etiquette] {$1$};
+% \end{tikzpicture}
+% \end{center}
+% %:-+-+-+-+- Fin
+
+
+
+% %:-+-+-+- Engendré par : http://math.et.info.free.fr/TikZ/Arbre/
+% \begin{center}
+% % Racine à Gauche, développement vers la droite
+% \begin{tikzpicture}[xscale=0.2,yscale=0.2]
+% % Styles (MODIFIABLES)
+% \tikzstyle{fleche}=[->,>=latex,thick]
+% \tikzstyle{noeud}=[fill=yellow,circle,draw]
+% \tikzstyle{feuille}=[fill=yellow,circle,draw]
+% \tikzstyle{etiquette}=[midway,fill=white,draw]
+% % Dimensions (MODIFIABLES)
+% \def\DistanceInterNiveaux{3}
+% \def\DistanceInterFeuilles{2}
+% % Dimensions calculées (NON MODIFIABLES)
+% \def\NiveauA{(0)*\DistanceInterNiveaux}
+% \def\NiveauB{(1.875)*\DistanceInterNiveaux}
+% \def\NiveauC{(3.625)*\DistanceInterNiveaux}
+% \def\NiveauD{(5.25)*\DistanceInterNiveaux}
+% \def\NiveauE{(6.75)*\DistanceInterNiveaux}
+% \def\NiveauF{(8.125)*\DistanceInterNiveaux}
+% \def\NiveauG{(9.375)*\DistanceInterNiveaux}
+% \def\NiveauH{(10.5)*\DistanceInterNiveaux}
+% \def\NiveauI{(11.5)*\DistanceInterNiveaux}
+% \def\InterFeuilles{(-1)*\DistanceInterFeuilles}
+% % Noeuds (MODIFIABLES : Styles et Coefficients d'InterFeuilles)
+% \node[noeud] (R) at ({\NiveauA},{(13.5)*\InterFeuilles}) {\tiny $Tous$};
+% \node[noeud] (Ra) at ({\NiveauB},{(3.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Raa) at ({\NiveauC},{(1)*\InterFeuilles}) {$$};
+% \node[noeud] (Raaa) at ({\NiveauD},{(0.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Raaaa) at ({\NiveauE},{(0)*\InterFeuilles}) {\tiny $H$};
+% \node[feuille] (Raaab) at ({\NiveauE},{(1)*\InterFeuilles}) {\tiny $T$};
+% \node[feuille] (Raab) at ({\NiveauD},{(2)*\InterFeuilles}) {\tiny $E$};
+% \node[noeud] (Rab) at ({\NiveauC},{(5)*\InterFeuilles}) {$$};
+% \node[noeud] (Raba) at ({\NiveauD},{(4)*\InterFeuilles}) {$$};
+% \node[feuille] (Rabaa) at ({\NiveauE},{(3)*\InterFeuilles}) {\tiny $A$};
+% \node[noeud] (Rabab) at ({\NiveauE},{(4.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rababa) at ({\NiveauF},{(4)*\InterFeuilles}) {\tiny $W$};
+% \node[feuille] (Rababb) at ({\NiveauF},{(5)*\InterFeuilles}) {\tiny $G$};
+% \node[noeud] (Rabb) at ({\NiveauD},{(6.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rabba) at ({\NiveauE},{(6)*\InterFeuilles}) {\tiny $D$};
+% \node[feuille] (Rabbb) at ({\NiveauE},{(7)*\InterFeuilles}) {\tiny $U$};
+% \node[noeud] (Rb) at ({\NiveauB},{(17.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rba) at ({\NiveauC},{(10.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbaa) at ({\NiveauD},{(8)*\InterFeuilles}) {\tiny $O$};
+% \node[noeud] (Rbab) at ({\NiveauD},{(11)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbaba) at ({\NiveauE},{(10)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbabaa) at ({\NiveauF},{(9.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbabaaa) at ({\NiveauG},{(9)*\InterFeuilles}) {\tiny $.$};
+% \node[feuille] (Rbabaab) at ({\NiveauG},{(10)*\InterFeuilles}) {\tiny $K$};
+% \node[feuille] (Rbabab) at ({\NiveauF},{(11)*\InterFeuilles}) {\tiny $M$};
+% \node[noeud] (Rbabb) at ({\NiveauE},{(12.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbabba) at ({\NiveauF},{(12)*\InterFeuilles}) {\tiny $L$};
+% \node[feuille] (Rbabbb) at ({\NiveauF},{(13)*\InterFeuilles}) {\tiny $S$};
+% \node[noeud] (Rbb) at ({\NiveauC},{(20.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbba) at ({\NiveauD},{(20)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbaa) at ({\NiveauE},{(16.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbaaa) at ({\NiveauF},{(16)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbaaaa) at ({\NiveauG},{(14.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbaaaaa) at ({\NiveauH},{(14)*\InterFeuilles}) {\tiny
+%   $Y$};
+% \node[feuille] (Rbbaaaab) at ({\NiveauH},{(15)*\InterFeuilles}) {\tiny
+%   $"$};
+% \node[noeud] (Rbbaaab) at ({\NiveauG},{(17)*\InterFeuilles}) {};
+% \node[noeud] (Rbbaaaba) at ({\NiveauH},{(16.5)*\InterFeuilles}) {};
+% \node[feuille] (Rbbaaabaa) at ({\NiveauI},{(16)*\InterFeuilles})
+% {\tiny $F$};
+% \node[feuille] (Rbbaaabab) at ({\NiveauI},{(17)*\InterFeuilles})
+% {\tiny $X$};
+% \node[feuille] (Rbbaaabb) at ({\NiveauH},{(18)*\InterFeuilles}) {\tiny
+%   $B$};
+% \node[feuille] (Rbbaab) at ({\NiveauF},{(19)*\InterFeuilles}) {\tiny $N$};
+% \node[noeud] (Rbbab) at ({\NiveauE},{(23)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbaba) at ({\NiveauF},{(20)*\InterFeuilles}) {\tiny $R$};
+% \node[noeud] (Rbbabb) at ({\NiveauF},{(23.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbabba) at ({\NiveauG},{(22.5)*\InterFeuilles}) {$$};
+% \node[noeud] (Rbbabbaa) at ({\NiveauH},{(21.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbabbaaa) at ({\NiveauI},{(21)*\InterFeuilles})
+% {\tiny $P$};
+% \node[feuille] (Rbbabbaab) at ({\NiveauI},{(22)*\InterFeuilles})
+% {\tiny $V$};
+% \node[noeud] (Rbbabbab) at ({\NiveauH},{(23.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbabbaba) at ({\NiveauI},{(23)*\InterFeuilles})
+% {\tiny $?$};
+% \node[feuille] (Rbbabbabb) at ({\NiveauI},{(24)*\InterFeuilles})
+% {\tiny $,$};
+% \node[noeud] (Rbbabbb) at ({\NiveauG},{(25.5)*\InterFeuilles}) {$$};
+% \node[feuille] (Rbbabbba) at ({\NiveauH},{(25)*\InterFeuilles}) {\tiny
+%   $C$};
+% \node[feuille] (Rbbabbbb) at ({\NiveauH},{(26)*\InterFeuilles}) {\tiny
+%   $I$};
+% \node[feuille] (Rbbb) at ({\NiveauD},{(27)*\InterFeuilles}) {\tiny $espace$};
+% % Arcs (MODIFIABLES : Styles)
+% \draw[fleche] (R)--(Ra) node[etiquette] {$0$};
+% \draw[fleche] (Ra)--(Raa) node[etiquette] {$0$};
+% \draw[fleche] (Raa)--(Raaa) node[etiquette] {$0$};
+% \draw[fleche] (Raaa)--(Raaaa) node[etiquette] {$0$};
+% \draw[fleche] (Raaa)--(Raaab) node[etiquette] {$1$};
+% \draw[fleche] (Raa)--(Raab) node[etiquette] {$1$};
+% \draw[fleche] (Ra)--(Rab) node[etiquette] {$1$};
+% \draw[fleche] (Rab)--(Raba) node[etiquette] {$0$};
+% \draw[fleche] (Raba)--(Rabaa) node[etiquette] {$0$};
+% \draw[fleche] (Raba)--(Rabab) node[etiquette] {$1$};
+% \draw[fleche] (Rabab)--(Rababa) node[etiquette] {$0$};
+% \draw[fleche] (Rabab)--(Rababb) node[etiquette] {$1$};
+% \draw[fleche] (Rab)--(Rabb) node[etiquette] {$1$};
+% \draw[fleche] (Rabb)--(Rabba) node[etiquette] {$0$};
+% \draw[fleche] (Rabb)--(Rabbb) node[etiquette] {$1$};
+% \draw[fleche] (R)--(Rb) node[etiquette] {$1$};
+% \draw[fleche] (Rb)--(Rba) node[etiquette] {$0$};
+% \draw[fleche] (Rba)--(Rbaa) node[etiquette] {$0$};
+% \draw[fleche] (Rba)--(Rbab) node[etiquette] {$1$};
+% \draw[fleche] (Rbab)--(Rbaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbaba)--(Rbabaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbabaa)--(Rbabaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbabaa)--(Rbabaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbaba)--(Rbabab) node[etiquette] {$1$};
+% \draw[fleche] (Rbab)--(Rbabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbabb)--(Rbabba) node[etiquette] {$0$};
+% \draw[fleche] (Rbabb)--(Rbabbb) node[etiquette] {$1$};
+% \draw[fleche] (Rb)--(Rbb) node[etiquette] {$1$};
+% \draw[fleche] (Rbb)--(Rbba) node[etiquette] {$0$};
+% \draw[fleche] (Rbba)--(Rbbaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaa)--(Rbbaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaa)--(Rbbaaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaa)--(Rbbaaaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaa)--(Rbbaaaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaaa)--(Rbbaaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaaab)--(Rbbaaaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaba)--(Rbbaaabaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbaaaba)--(Rbbaaabab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaaab)--(Rbbaaabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbaa)--(Rbbaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbba)--(Rbbab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbab)--(Rbbaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbab)--(Rbbabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabb)--(Rbbabba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabba)--(Rbbabbaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbaa)--(Rbbabbaaa) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbaa)--(Rbbabbaab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabba)--(Rbbabbab) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabbab)--(Rbbabbaba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbab)--(Rbbabbabb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabb)--(Rbbabbb) node[etiquette] {$1$};
+% \draw[fleche] (Rbbabbb)--(Rbbabbba) node[etiquette] {$0$};
+% \draw[fleche] (Rbbabbb)--(Rbbabbbb) node[etiquette] {$1$};
+% \draw[fleche] (Rbb)--(Rbbb) node[etiquette] {$1$};
+% \end{tikzpicture}
+% \end{center}
+% %:-+-+-+-+- Fin
+
+
+
+\pagebreak
+
+%:-+-+-+- Engendré par : http://math.et.info.free.fr/TikZ/Arbre/
+\begin{center}
+% Racine en Haut, développement vers le bas
+\begin{tikzpicture}[xscale=0.4,yscale=0.45]
+% Styles (MODIFIABLES)
+\tikzstyle{fleche}=[->,>=latex,thick]
+\tikzstyle{noeud}=[fill=yellow,circle,draw]
+\tikzstyle{feuille}=[fill=yellow,circle,draw]
+\tikzstyle{etiquette}=[midway,fill=white,draw]
+% Dimensions (MODIFIABLES)
+\def\DistanceInterNiveaux{3}
+\def\DistanceInterFeuilles{2}
+% Dimensions calculées (NON MODIFIABLES)
+\def\NiveauA{(-0)*\DistanceInterNiveaux}
+\def\NiveauB{(-1.875)*\DistanceInterNiveaux}
+\def\NiveauC{(-3.625)*\DistanceInterNiveaux}
+\def\NiveauD{(-5.25)*\DistanceInterNiveaux}
+\def\NiveauE{(-6.75)*\DistanceInterNiveaux}
+\def\NiveauF{(-8.125)*\DistanceInterNiveaux}
+\def\NiveauG{(-9.375)*\DistanceInterNiveaux}
+\def\NiveauH{(-10.5)*\DistanceInterNiveaux}
+\def\NiveauI{(-11.5)*\DistanceInterNiveaux}
+\def\InterFeuilles{(1)*\DistanceInterFeuilles}
+% Noeuds (MODIFIABLES : Styles et Coefficients d'InterFeuilles)
+\node[noeud] (R) at ({(13.5)*\InterFeuilles},{\NiveauA}) {\tiny Tous};
+\node[noeud] (Ra) at ({(3.5)*\InterFeuilles},{\NiveauB}) {};
+\node[noeud] (Raa) at ({(1)*\InterFeuilles},{\NiveauC}) {};
+\node[noeud] (Raaa) at ({(0.5)*\InterFeuilles},{\NiveauD}) {};
+\node[feuille] (Raaaa) at ({(0)*\InterFeuilles},{\NiveauE}) {\tiny H};
+\node[feuille] (Raaab) at ({(1)*\InterFeuilles},{\NiveauE}) {\tiny T};
+\node[feuille] (Raab) at ({(2)*\InterFeuilles},{\NiveauD}) {\tiny E};
+\node[noeud] (Rab) at ({(5)*\InterFeuilles},{\NiveauC}) {};
+\node[noeud] (Raba) at ({(4)*\InterFeuilles},{\NiveauD}) {};
+\node[feuille] (Rabaa) at ({(3)*\InterFeuilles},{\NiveauE}) {\tiny A};
+\node[noeud] (Rabab) at ({(4.5)*\InterFeuilles},{\NiveauE}) {};
+\node[feuille] (Rababa) at ({(4)*\InterFeuilles},{\NiveauF}) {\tiny W};
+\node[feuille] (Rababb) at ({(5)*\InterFeuilles},{\NiveauF}) {\tiny G};
+\node[noeud] (Rabb) at ({(6.5)*\InterFeuilles},{\NiveauD}) {};
+\node[feuille] (Rabba) at ({(6)*\InterFeuilles},{\NiveauE}) {\tiny D};
+\node[feuille] (Rabbb) at ({(7)*\InterFeuilles},{\NiveauE}) {\tiny U};
+\node[noeud] (Rb) at ({(17.5)*\InterFeuilles},{\NiveauB}) {};
+\node[noeud] (Rba) at ({(10.5)*\InterFeuilles},{\NiveauC}) {};
+\node[feuille] (Rbaa) at ({(8)*\InterFeuilles},{\NiveauD}) {\tiny O};
+\node[noeud] (Rbab) at ({(11)*\InterFeuilles},{\NiveauD}) {};
+\node[noeud] (Rbaba) at ({(10)*\InterFeuilles},{\NiveauE}) {};
+\node[noeud] (Rbabaa) at ({(9.5)*\InterFeuilles},{\NiveauF}) {};
+\node[feuille] (Rbabaaa) at ({(9)*\InterFeuilles},{\NiveauG}) {\tiny .};
+\node[feuille] (Rbabaab) at ({(10)*\InterFeuilles},{\NiveauG}) {\tiny K};
+\node[feuille] (Rbabab) at ({(11)*\InterFeuilles},{\NiveauF}) {\tiny M};
+\node[noeud] (Rbabb) at ({(12.5)*\InterFeuilles},{\NiveauE}) {};
+\node[feuille] (Rbabba) at ({(12)*\InterFeuilles},{\NiveauF}) {\tiny L};
+\node[feuille] (Rbabbb) at ({(13)*\InterFeuilles},{\NiveauF}) {\tiny S};
+\node[noeud] (Rbb) at ({(20.5)*\InterFeuilles},{\NiveauC}) {};
+\node[noeud] (Rbba) at ({(20)*\InterFeuilles},{\NiveauD}) {};
+\node[noeud] (Rbbaa) at ({(16.5)*\InterFeuilles},{\NiveauE}) {};
+\node[noeud] (Rbbaaa) at ({(16)*\InterFeuilles},{\NiveauF}) {};
+\node[noeud] (Rbbaaaa) at ({(14.5)*\InterFeuilles},{\NiveauG}) {};
+\node[feuille] (Rbbaaaaa) at ({(14)*\InterFeuilles},{\NiveauH}) {\tiny
+  Y};
+\node[feuille] (Rbbaaaab) at ({(15)*\InterFeuilles},{\NiveauH}) {\tiny
+  "};
+\node[noeud] (Rbbaaab) at ({(17)*\InterFeuilles},{\NiveauG}) {};
+\node[noeud] (Rbbaaaba) at ({(16.5)*\InterFeuilles},{\NiveauH}) {};
+\node[feuille] (Rbbaaabaa) at ({(16)*\InterFeuilles},{\NiveauI})
+{\tiny F};
+\node[feuille] (Rbbaaabab) at ({(17)*\InterFeuilles},{\NiveauI})
+{\tiny X};
+\node[feuille] (Rbbaaabb) at ({(18)*\InterFeuilles},{\NiveauH}) {\tiny
+  B};
+\node[feuille] (Rbbaab) at ({(19)*\InterFeuilles},{\NiveauF}) {\tiny N};
+\node[noeud] (Rbbab) at ({(23)*\InterFeuilles},{\NiveauE}) {};
+\node[feuille] (Rbbaba) at ({(20)*\InterFeuilles},{\NiveauF}) {\tiny R};
+\node[noeud] (Rbbabb) at ({(23.5)*\InterFeuilles},{\NiveauF}) {};
+\node[noeud] (Rbbabba) at ({(22.5)*\InterFeuilles},{\NiveauG}) {};
+\node[noeud] (Rbbabbaa) at ({(21.5)*\InterFeuilles},{\NiveauH}) {};
+\node[feuille] (Rbbabbaaa) at ({(21)*\InterFeuilles},{\NiveauI})
+{\tiny P};
+\node[feuille] (Rbbabbaab) at ({(22)*\InterFeuilles},{\NiveauI})
+{\tiny V};
+\node[noeud] (Rbbabbab) at ({(23.5)*\InterFeuilles},{\NiveauH}) {};
+\node[feuille] (Rbbabbaba) at ({(23)*\InterFeuilles},{\NiveauI})
+{\tiny ?};
+\node[feuille] (Rbbabbabb) at ({(24)*\InterFeuilles},{\NiveauI})
+{\tiny ,};
+\node[noeud] (Rbbabbb) at ({(25.5)*\InterFeuilles},{\NiveauG}) {};
+\node[feuille] (Rbbabbba) at ({(25)*\InterFeuilles},{\NiveauH}) {\tiny
+  C};
+\node[feuille] (Rbbabbbb) at ({(26)*\InterFeuilles},{\NiveauH}) {\tiny
+  I};
+\node[feuille] (Rbbb) at ({(27)*\InterFeuilles},{\NiveauD}) {\tiny espace};
+% Arcs (MODIFIABLES : Styles)
+\draw[fleche] (R)--(Ra) node[etiquette] {\tiny 0};
+\draw[fleche] (Ra)--(Raa) node[etiquette] {\tiny 0};
+\draw[fleche] (Raa)--(Raaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Raaa)--(Raaaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Raaa)--(Raaab) node[etiquette] {\tiny 1};
+\draw[fleche] (Raa)--(Raab) node[etiquette] {\tiny 1};
+\draw[fleche] (Ra)--(Rab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rab)--(Raba) node[etiquette] {\tiny 0};
+\draw[fleche] (Raba)--(Rabaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Raba)--(Rabab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rabab)--(Rababa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rabab)--(Rababb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rab)--(Rabb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rabb)--(Rabba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rabb)--(Rabbb) node[etiquette] {\tiny 1};
+\draw[fleche] (R)--(Rb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rb)--(Rba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rba)--(Rbaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rba)--(Rbab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbab)--(Rbaba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbaba)--(Rbabaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbabaa)--(Rbabaaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbabaa)--(Rbabaab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbaba)--(Rbabab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbab)--(Rbabb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbabb)--(Rbabba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbabb)--(Rbabbb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rb)--(Rbb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbb)--(Rbba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbba)--(Rbbaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbaa)--(Rbbaaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbaaa)--(Rbbaaaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbaaaa)--(Rbbaaaaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbaaaa)--(Rbbaaaab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbaaa)--(Rbbaaab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbaaab)--(Rbbaaaba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbaaaba)--(Rbbaaabaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbaaaba)--(Rbbaaabab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbaaab)--(Rbbaaabb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbaa)--(Rbbaab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbba)--(Rbbab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbab)--(Rbbaba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbab)--(Rbbabb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbabb)--(Rbbabba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbabba)--(Rbbabbaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbabbaa)--(Rbbabbaaa) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbabbaa)--(Rbbabbaab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbabba)--(Rbbabbab) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbabbab)--(Rbbabbaba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbabbab)--(Rbbabbabb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbabb)--(Rbbabbb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbbabbb)--(Rbbabbba) node[etiquette] {\tiny 0};
+\draw[fleche] (Rbbabbb)--(Rbbabbbb) node[etiquette] {\tiny 1};
+\draw[fleche] (Rbb)--(Rbbb) node[etiquette] {\tiny 1};
+\end{tikzpicture}
+\end{center}
+%:-+-+-+-+- Fin
+
+
+\end{document}
+
+
+
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%   un nouvel exo et sa correction       %%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%début-exo
+\begin{exo}
+  \begin{enumerate}
+  \item %question 1
+
+  \item %question 2
+
+  \end{enumerate}
+\end{exo}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%fin-exo
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%début-correction
+\begin{correction}
+  \begin{shaded}
+    %%% \begin{minipage}{.9\linewidth}
+    \begin{center}
+      \textbf{solution.}
+    \end{center}
+    \begin{enumerate}
+    \item %solution question 1
+
+    \item %solution question 2
+
+    \end{enumerate}
+    %%%\end{minipage}
+  \end{shaded}
+  \medskip
+\end{correction}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%fin-correction
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%% LocalWords:  
+%%% Local Variables: 
+%%% mode: latex
+%%% TeX-master: t
+%%% End: 
+
diff --git a/3InformationTheory/file1.txt b/3InformationTheory/file1.txt
new file mode 100644
index 0000000..cf8297e
--- /dev/null
+++ b/3InformationTheory/file1.txt
@@ -0,0 +1,11 @@
+Ceci est un fichier texte pour tester la commande diff.
+
+Vous pouvez consulter le manuel de la commande diff en écrivant.
+
+man diff
+
+Ici j'ajoute une ligne qui sera absente du fichier file2.txt
+
+Pour faire la différence entre deux fichiers on peut faire :
+
+diff --color file1.txt file2.txt
diff --git a/3InformationTheory/file2.txt b/3InformationTheory/file2.txt
new file mode 100644
index 0000000..d862eef
--- /dev/null
+++ b/3InformationTheory/file2.txt
@@ -0,0 +1,24 @@
+Ceci est un fichier texte pour tester la commande diff.
+
+Vous pouvez consulter le manuel de la commande diff en écrivant.
+
+man diff
+
+Je peux écrire le résultat (la page de manuel de diff) en écrivant
+
+man diff >> file2.txt
+
+Comme c'est un peu long, à la place j'ai utilisé
+
+man diff | head >> file2.txt
+
+GNU(1)                                                                                        User Commands                                                                                       GNU(1)
+
+NAME
+       GNU diff - compare files line by line
+
+SYNOPSIS
+       diff [OPTION]... FILES
+
+DESCRIPTION
+       Compare FILES line by line.
diff --git a/3InformationTheory/gruffalo.txt b/3InformationTheory/gruffalo.txt
new file mode 100644
index 0000000..eb37bb6
--- /dev/null
+++ b/3InformationTheory/gruffalo.txt
@@ -0,0 +1,168 @@
+A mouse took a stroll through the deep dark wood. A fox saw
+the mouse and the mouse looked good. “Where are you going
+to, little brown mouse? Come and have lunch in my
+underground house.”
+
+étape 1 au tableau on compte la fréquence des lettres.
+Le moins fréquent est à traiter en premier.
+
+étape 2 au tableau on construit l'arbre de Huffman.
+
+étape 3 : compression.
+On note les labels de la racine vers la feuille qui est le code de chaque lettre.
+
+A devient : 0100
+(j'écris _ pour l'espace)
+_ devient : 111
+m devient : 10 101
+o devient : 100
+u devient : 0 111
+s devient : 10 111
+e devient : 001
+_ devient : 111
+t devient : 000 1
+o devient : 100
+o devient : 100
+k devient : 101 001
+_ devient : 111
+a devient : ????
+_ devient : 111
+
+%:-+-+-+- Engendré par : http://math.et.info.free.fr/TikZ/Arbre/
+\begin{center}
+% Racine à Gauche, développement vers la droite
+\begin{tikzpicture}[xscale=1,yscale=1]
+% Styles (MODIFIABLES)
+\tikzstyle{fleche}=[->,>=latex,thick]
+\tikzstyle{noeud}=[fill=yellow,circle,draw]
+\tikzstyle{feuille}=[fill=yellow,circle,draw]
+\tikzstyle{etiquette}=[midway,fill=white,draw]
+% Dimensions (MODIFIABLES)
+\def\DistanceInterNiveaux{3}
+\def\DistanceInterFeuilles{2}
+% Dimensions calculées (NON MODIFIABLES)
+\def\NiveauA{(0)*\DistanceInterNiveaux}
+\def\NiveauB{(1.875)*\DistanceInterNiveaux}
+\def\NiveauC{(3.625)*\DistanceInterNiveaux}
+\def\NiveauD{(5.25)*\DistanceInterNiveaux}
+\def\NiveauE{(6.75)*\DistanceInterNiveaux}
+\def\NiveauF{(8.125)*\DistanceInterNiveaux}
+\def\NiveauG{(9.375)*\DistanceInterNiveaux}
+\def\NiveauH{(10.5)*\DistanceInterNiveaux}
+\def\NiveauI{(11.5)*\DistanceInterNiveaux}
+\def\InterFeuilles{(-1)*\DistanceInterFeuilles}
+% Noeuds (MODIFIABLES : Styles et Coefficients d'InterFeuilles)
+\node[noeud] (R) at ({\NiveauA},{(13.5)*\InterFeuilles}) {$Tous$};
+\node[noeud] (Ra) at ({\NiveauB},{(3.5)*\InterFeuilles}) {$$};
+\node[noeud] (Raa) at ({\NiveauC},{(1)*\InterFeuilles}) {$$};
+\node[noeud] (Raaa) at ({\NiveauD},{(0.5)*\InterFeuilles}) {$$};
+\node[feuille] (Raaaa) at ({\NiveauE},{(0)*\InterFeuilles}) {$H$};
+\node[feuille] (Raaab) at ({\NiveauE},{(1)*\InterFeuilles}) {$T$};
+\node[feuille] (Raab) at ({\NiveauD},{(2)*\InterFeuilles}) {$E$};
+\node[noeud] (Rab) at ({\NiveauC},{(5)*\InterFeuilles}) {$$};
+\node[noeud] (Raba) at ({\NiveauD},{(4)*\InterFeuilles}) {$$};
+\node[feuille] (Rabaa) at ({\NiveauE},{(3)*\InterFeuilles}) {$A$};
+\node[noeud] (Rabab) at ({\NiveauE},{(4.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rababa) at ({\NiveauF},{(4)*\InterFeuilles}) {$W$};
+\node[feuille] (Rababb) at ({\NiveauF},{(5)*\InterFeuilles}) {$G$};
+\node[noeud] (Rabb) at ({\NiveauD},{(6.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rabba) at ({\NiveauE},{(6)*\InterFeuilles}) {$D$};
+\node[feuille] (Rabbb) at ({\NiveauE},{(7)*\InterFeuilles}) {$U$};
+\node[noeud] (Rb) at ({\NiveauB},{(17.5)*\InterFeuilles}) {$$};
+\node[noeud] (Rba) at ({\NiveauC},{(10.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbaa) at ({\NiveauD},{(8)*\InterFeuilles}) {$O$};
+\node[noeud] (Rbab) at ({\NiveauD},{(11)*\InterFeuilles}) {$$};
+\node[noeud] (Rbaba) at ({\NiveauE},{(10)*\InterFeuilles}) {$$};
+\node[noeud] (Rbabaa) at ({\NiveauF},{(9.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbabaaa) at ({\NiveauG},{(9)*\InterFeuilles}) {$.$};
+\node[feuille] (Rbabaab) at ({\NiveauG},{(10)*\InterFeuilles}) {$K$};
+\node[feuille] (Rbabab) at ({\NiveauF},{(11)*\InterFeuilles}) {$M$};
+\node[noeud] (Rbabb) at ({\NiveauE},{(12.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbabba) at ({\NiveauF},{(12)*\InterFeuilles}) {$L$};
+\node[feuille] (Rbabbb) at ({\NiveauF},{(13)*\InterFeuilles}) {$S$};
+\node[noeud] (Rbb) at ({\NiveauC},{(20.5)*\InterFeuilles}) {$$};
+\node[noeud] (Rbba) at ({\NiveauD},{(20)*\InterFeuilles}) {$$};
+\node[noeud] (Rbbaa) at ({\NiveauE},{(16.5)*\InterFeuilles}) {$$};
+\node[noeud] (Rbbaaa) at ({\NiveauF},{(16)*\InterFeuilles}) {$$};
+\node[noeud] (Rbbaaaa) at ({\NiveauG},{(14.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbbaaaaa) at ({\NiveauH},{(14)*\InterFeuilles}) {$Y$};
+\node[feuille] (Rbbaaaab) at ({\NiveauH},{(15)*\InterFeuilles}) {$"$};
+\node[noeud] (Rbbaaab) at ({\NiveauG},{(17)*\InterFeuilles}) {$Nœud36$};
+\node[noeud] (Rbbaaaba) at ({\NiveauH},{(16.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbbaaabaa) at ({\NiveauI},{(16)*\InterFeuilles}) {$F$};
+\node[feuille] (Rbbaaabab) at ({\NiveauI},{(17)*\InterFeuilles}) {$X$};
+\node[feuille] (Rbbaaabb) at ({\NiveauH},{(18)*\InterFeuilles}) {$B$};
+\node[feuille] (Rbbaab) at ({\NiveauF},{(19)*\InterFeuilles}) {$N$};
+\node[noeud] (Rbbab) at ({\NiveauE},{(23)*\InterFeuilles}) {$$};
+\node[feuille] (Rbbaba) at ({\NiveauF},{(20)*\InterFeuilles}) {$R$};
+\node[noeud] (Rbbabb) at ({\NiveauF},{(23.5)*\InterFeuilles}) {$$};
+\node[noeud] (Rbbabba) at ({\NiveauG},{(22.5)*\InterFeuilles}) {$$};
+\node[noeud] (Rbbabbaa) at ({\NiveauH},{(21.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbbabbaaa) at ({\NiveauI},{(21)*\InterFeuilles}) {$P$};
+\node[feuille] (Rbbabbaab) at ({\NiveauI},{(22)*\InterFeuilles}) {$V$};
+\node[noeud] (Rbbabbab) at ({\NiveauH},{(23.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbbabbaba) at ({\NiveauI},{(23)*\InterFeuilles}) {$?$};
+\node[feuille] (Rbbabbabb) at ({\NiveauI},{(24)*\InterFeuilles}) {$,$};
+\node[noeud] (Rbbabbb) at ({\NiveauG},{(25.5)*\InterFeuilles}) {$$};
+\node[feuille] (Rbbabbba) at ({\NiveauH},{(25)*\InterFeuilles}) {$C$};
+\node[feuille] (Rbbabbbb) at ({\NiveauH},{(26)*\InterFeuilles}) {$I$};
+\node[feuille] (Rbbb) at ({\NiveauD},{(27)*\InterFeuilles}) {$espace$};
+% Arcs (MODIFIABLES : Styles)
+\draw[fleche] (R)--(Ra) node[etiquette] {$0$};
+\draw[fleche] (Ra)--(Raa) node[etiquette] {$0$};
+\draw[fleche] (Raa)--(Raaa) node[etiquette] {$0$};
+\draw[fleche] (Raaa)--(Raaaa) node[etiquette] {$0$};
+\draw[fleche] (Raaa)--(Raaab) node[etiquette] {$1$};
+\draw[fleche] (Raa)--(Raab) node[etiquette] {$1$};
+\draw[fleche] (Ra)--(Rab) node[etiquette] {$1$};
+\draw[fleche] (Rab)--(Raba) node[etiquette] {$0$};
+\draw[fleche] (Raba)--(Rabaa) node[etiquette] {$0$};
+\draw[fleche] (Raba)--(Rabab) node[etiquette] {$1$};
+\draw[fleche] (Rabab)--(Rababa) node[etiquette] {$0$};
+\draw[fleche] (Rabab)--(Rababb) node[etiquette] {$A$};
+\draw[fleche] (Rab)--(Rabb) node[etiquette] {$1$};
+\draw[fleche] (Rabb)--(Rabba) node[etiquette] {$0$};
+\draw[fleche] (Rabb)--(Rabbb) node[etiquette] {$1$};
+\draw[fleche] (R)--(Rb) node[etiquette] {$1$};
+\draw[fleche] (Rb)--(Rba) node[etiquette] {$0$};
+\draw[fleche] (Rba)--(Rbaa) node[etiquette] {$0$};
+\draw[fleche] (Rba)--(Rbab) node[etiquette] {$1$};
+\draw[fleche] (Rbab)--(Rbaba) node[etiquette] {$0$};
+\draw[fleche] (Rbaba)--(Rbabaa) node[etiquette] {$0$};
+\draw[fleche] (Rbabaa)--(Rbabaaa) node[etiquette] {$0$};
+\draw[fleche] (Rbabaa)--(Rbabaab) node[etiquette] {$1$};
+\draw[fleche] (Rbaba)--(Rbabab) node[etiquette] {$1$};
+\draw[fleche] (Rbab)--(Rbabb) node[etiquette] {$1$};
+\draw[fleche] (Rbabb)--(Rbabba) node[etiquette] {$0$};
+\draw[fleche] (Rbabb)--(Rbabbb) node[etiquette] {$1$};
+\draw[fleche] (Rb)--(Rbb) node[etiquette] {$1$};
+\draw[fleche] (Rbb)--(Rbba) node[etiquette] {$0$};
+\draw[fleche] (Rbba)--(Rbbaa) node[etiquette] {$0$};
+\draw[fleche] (Rbbaa)--(Rbbaaa) node[etiquette] {$0$};
+\draw[fleche] (Rbbaaa)--(Rbbaaaa) node[etiquette] {$0$};
+\draw[fleche] (Rbbaaaa)--(Rbbaaaaa) node[etiquette] {$0$};
+\draw[fleche] (Rbbaaaa)--(Rbbaaaab) node[etiquette] {$1$};
+\draw[fleche] (Rbbaaa)--(Rbbaaab) node[etiquette] {$1$};
+\draw[fleche] (Rbbaaab)--(Rbbaaaba) node[etiquette] {$0$};
+\draw[fleche] (Rbbaaaba)--(Rbbaaabaa) node[etiquette] {$0$};
+\draw[fleche] (Rbbaaaba)--(Rbbaaabab) node[etiquette] {$1$};
+\draw[fleche] (Rbbaaab)--(Rbbaaabb) node[etiquette] {$1$};
+\draw[fleche] (Rbbaa)--(Rbbaab) node[etiquette] {$1$};
+\draw[fleche] (Rbba)--(Rbbab) node[etiquette] {$1$};
+\draw[fleche] (Rbbab)--(Rbbaba) node[etiquette] {$0$};
+\draw[fleche] (Rbbab)--(Rbbabb) node[etiquette] {$1$};
+\draw[fleche] (Rbbabb)--(Rbbabba) node[etiquette] {$0$};
+\draw[fleche] (Rbbabba)--(Rbbabbaa) node[etiquette] {$0$};
+\draw[fleche] (Rbbabbaa)--(Rbbabbaaa) node[etiquette] {$0$};
+\draw[fleche] (Rbbabbaa)--(Rbbabbaab) node[etiquette] {$1$};
+\draw[fleche] (Rbbabba)--(Rbbabbab) node[etiquette] {$1$};
+\draw[fleche] (Rbbabbab)--(Rbbabbaba) node[etiquette] {$0$};
+\draw[fleche] (Rbbabbab)--(Rbbabbabb) node[etiquette] {$1$};
+\draw[fleche] (Rbbabb)--(Rbbabbb) node[etiquette] {$1$};
+\draw[fleche] (Rbbabbb)--(Rbbabbba) node[etiquette] {$0$};
+\draw[fleche] (Rbbabbb)--(Rbbabbbb) node[etiquette] {$1$};
+\draw[fleche] (Rbb)--(Rbbb) node[etiquette] {$1$};
+\end{tikzpicture}
+\end{center}
+%:-+-+-+-+- Fin
+