diff --git a/communications-numeriques/Makefile b/communications-numeriques/Makefile
index c9c64fb..ccf3860 100644
--- a/communications-numeriques/Makefile
+++ b/communications-numeriques/Makefile
@@ -1,16 +1,7 @@
 filename=$(shell basename $(shell pwd))
 timestamp=$(shell date +%Y-%m-%d_%H:%M)
 
-all: snapshot td2
-
-td2: td2.tex
-	@latexmk -pdf td2.tex
-	@if ! cmp --silent build/td2.pdf td2_*.pdf; then \
-		touch td2_tmp.pdf; \
-		rm td2*.pdf; \
-		cp build/td2.pdf td2_${timestamp}.pdf; \
-		echo "Updated"; \
-	fi
+all: snapshot
 
 snapshot: main.tex
 	@latexmk -pdf main.tex
diff --git a/communications-numeriques/styles.sty b/communications-numeriques/styles.sty
index 2f5f4c6..f2094ac 100644
--- a/communications-numeriques/styles.sty
+++ b/communications-numeriques/styles.sty
@@ -99,7 +99,6 @@
 \usepackage{tikz}
 \usetikzlibrary{shapes}
 \usepackage{circuitikz}
-
 \usepackage{pgfplots}
 \usepgfplotslibrary{fillbetween}
 
diff --git a/communications-numeriques/td2/Makefile b/communications-numeriques/td2/Makefile
new file mode 100644
index 0000000..ccf3860
--- /dev/null
+++ b/communications-numeriques/td2/Makefile
@@ -0,0 +1,16 @@
+filename=$(shell basename $(shell pwd))
+timestamp=$(shell date +%Y-%m-%d_%H:%M)
+
+all: snapshot
+
+snapshot: main.tex
+	@latexmk -pdf main.tex
+	@if ! cmp --silent build/main.pdf ${filename}_*.pdf; then \
+		touch ${filename}_tmp.pdf; \
+		rm ${filename}*.pdf; \
+		cp build/main.pdf ${filename}_${timestamp}.pdf; \
+		echo "Updated"; \
+	fi
+
+clean:
+	@rm -rf build 2>/dev/null
diff --git a/communications-numeriques/td2.tex b/communications-numeriques/td2/main.tex
similarity index 97%
rename from communications-numeriques/td2.tex
rename to communications-numeriques/td2/main.tex
index 7f20039..7627c56 100644
--- a/communications-numeriques/td2.tex
+++ b/communications-numeriques/td2/main.tex
@@ -5,13 +5,6 @@
 \date{Dernière compilation~: \today{} à \currenttime}
 
 \usepackage{styles}
-\usepackage{tikz}
-\usetikzlibrary{shapes}
-
-\DeclareFontFamily{U}{wncy}{}
-\DeclareFontShape{U}{wncy}{m}{n}{<->wncyr10}{}
-\DeclareSymbolFont{mcy}{U}{wncy}{m}{n}
-\DeclareMathSymbol{\Sh}{\mathord}{mcy}{"58}
 
 \begin{document}
 
diff --git a/communications-numeriques/td2/styles.sty b/communications-numeriques/td2/styles.sty
new file mode 100644
index 0000000..17d5d65
--- /dev/null
+++ b/communications-numeriques/td2/styles.sty
@@ -0,0 +1,104 @@
+\ProvidesPackage{styles}
+
+\usepackage[
+    %showframe,
+    a4paper,includeheadfoot,margin=2cm,top=1cm,bottom=1cm
+]{geometry}
+
+\setcounter{tocdepth}{2}
+
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{babel}
+
+\usepackage{datetime}
+
+\usepackage{color}
+
+\usepackage{amsmath}
+\usepackage{amsfonts}
+\everymath{\displaystyle}
+\newcommand*\dif{\mathop{}\!\mathrm{d}}
+\usepackage{xfrac}
+\DeclareFontFamily{U}{wncy}{}
+\DeclareFontShape{U}{wncy}{m}{n}{<->wncyr10}{}
+\DeclareSymbolFont{mcy}{U}{wncy}{m}{n}
+\DeclareMathSymbol{\Sh}{\mathord}{mcy}{"58}
+
+\usepackage{enumitem}
+\usepackage{booktabs}
+\usepackage{tabularx}
+\newcolumntype{Y}{>{\centering\arraybackslash}X}
+\usepackage{multicol}
+\usepackage{multirow}
+\usepackage{makecell}
+\usepackage{parskip}
+\usepackage{microtype}
+
+\usepackage{listingsutf8}
+\lstset{%
+    inputencoding=utf8/latin1,
+    basicstyle=\small\ttfamily,
+    columns=flexible,
+    breaklines=true,
+    extendedchars=true,
+    literate=
+    {á}{{\'a}}1 {é}{{\'e}}1 {í}{{\'\i}}1 {ó}{{\'o}}1 {ú}{{\'u}}1
+    {Á}{{\'A}}1 {É}{{\'E}}1 {Í}{{\'I}}1 {Ó}{{\'O}}1 {Ú}{{\'U}}1
+    {à}{{\`a}}1 {è}{{\`e}}1 {ì}{{\`\i}}1 {ò}{{\`o}}1 {ù}{{\`u}}1
+    {À}{{\`A}}1 {È}{{\`E}}1 {Ì}{{\`I}}1 {Ò}{{\`O}}1 {Ù}{{\`U}}1
+    {ä}{{\"a}}1 {ë}{{\"e}}1 {ï}{{\"\i}}1 {ö}{{\"o}}1 {ü}{{\"u}}1
+    {Ä}{{\"A}}1 {Ë}{{\"E}}1 {Ï}{{\"I}}1 {Ö}{{\"O}}1 {Ü}{{\"U}}1
+    {â}{{\^a}}1 {ê}{{\^e}}1 {î}{{\^\i}}1 {ô}{{\^o}}1 {û}{{\^u}}1
+    {Â}{{\^A}}1 {Ê}{{\^E}}1 {Î}{{\^I}}1 {Ô}{{\^O}}1 {Û}{{\^U}}1
+    {Ã}{{\~A}}1 {ã}{{\~a}}1 {Õ}{{\~O}}1 {õ}{{\~o}}1 {œ}{{\oe}}1
+    {Œ}{{\OE}}1 {æ}{{\ae}}1 {Æ}{{\AE}}1 {ß}{{\ss}}1 {ű}{{\H{u}}}1
+    {Ű}{{\H{U}}}1 {ő}{{\H{o}}}1 {Ő}{{\H{O}}}1 {ç}{{\c c}}1
+    {Ç}{{\c C}}1 {ø}{{\o}}1 {å}{{\r a}}1 {Å}{{\r A}}1
+    {€}{{\euro}}1 {£}{{\pounds}}1 {«}{{\guillemotleft}}1
+    {»}{{\guillemotright}}1 {ñ}{{\~n}}1 {Ñ}{{\~N}}1 {¿}{{?`}}1
+}
+\let\oldlstinputlisting\lstinputlisting
+% make \lstinputlisting always have frame
+\renewcommand{\lstinputlisting}[2][]{\oldlstinputlisting[frame=single,#1]{#2}}
+
+\lstnewenvironment{console}[1][]{%
+    \lstset{%
+        inputencoding=utf8/latin1,
+        basicstyle=\small\ttfamily\color{white},
+        columns=flexible,
+        breaklines=true,
+        extendedchars=true,
+        literate=
+        {á}{{\'a}}1 {é}{{\'e}}1 {í}{{\'\i}}1 {ó}{{\'o}}1 {ú}{{\'u}}1
+        {Á}{{\'A}}1 {É}{{\'E}}1 {Í}{{\'I}}1 {Ó}{{\'O}}1 {Ú}{{\'U}}1
+        {à}{{\`a}}1 {è}{{\`e}}1 {ì}{{\`\i}}1 {ò}{{\`o}}1 {ù}{{\`u}}1
+        {À}{{\`A}}1 {È}{{\`E}}1 {Ì}{{\`I}}1 {Ò}{{\`O}}1 {Ù}{{\`U}}1
+        {ä}{{\"a}}1 {ë}{{\"e}}1 {ï}{{\"\i}}1 {ö}{{\"o}}1 {ü}{{\"u}}1
+        {Ä}{{\"A}}1 {Ë}{{\"E}}1 {Ï}{{\"I}}1 {Ö}{{\"O}}1 {Ü}{{\"U}}1
+        {â}{{\^a}}1 {ê}{{\^e}}1 {î}{{\^\i}}1 {ô}{{\^o}}1 {û}{{\^u}}1
+        {Â}{{\^A}}1 {Ê}{{\^E}}1 {Î}{{\^I}}1 {Ô}{{\^O}}1 {Û}{{\^U}}1
+        {Ã}{{\~A}}1 {ã}{{\~a}}1 {Õ}{{\~O}}1 {õ}{{\~o}}1 {œ}{{\oe}}1
+        {Œ}{{\OE}}1 {æ}{{\ae}}1 {Æ}{{\AE}}1 {ß}{{\ss}}1 {ű}{{\H{u}}}1
+        {Ű}{{\H{U}}}1 {ő}{{\H{o}}}1 {Ő}{{\H{O}}}1 {ç}{{\c c}}1
+        {Ç}{{\c C}}1 {ø}{{\o}}1 {å}{{\r a}}1 {Å}{{\r A}}1
+        {€}{{\euro}}1 {£}{{\pounds}}1 {«}{{\guillemotleft}}1
+        {»}{{\guillemotright}}1 {ñ}{{\~n}}1 {Ñ}{{\~N}}1 {¿}{{?`}}1,
+        backgroundcolor=\color{black}, #1
+    }%
+}{}
+
+\usepackage{graphicx}
+
+\usepackage[hyphens]{url}
+\usepackage[colorlinks,hidelinks]{hyperref}
+
+\usepackage{letltxmacro}
+\LetLtxMacro{\normalparagraph}{\paragraph}
+\renewcommand{\paragraph}[1]{\normalparagraph{#1}\mbox{}}
+
+\usepackage{tikz}
+\usetikzlibrary{shapes}
+\usepackage{float}
+
+\sloppy
diff --git a/communications-numeriques/tp/main.tex b/communications-numeriques/tp/main.tex
index 235601f..fe92ae5 100644
--- a/communications-numeriques/tp/main.tex
+++ b/communications-numeriques/tp/main.tex
@@ -4,7 +4,7 @@
 \author{Adam BELGHITH --- Tunui FRANKEN}
 \date{Dernière compilation~: \today{} à \currenttime}
 
-\usepackage{style}
+\usepackage{styles}
 
 \begin{document}
 
diff --git a/communications-numeriques/tp/style.sty b/communications-numeriques/tp/styles.sty
similarity index 99%
rename from communications-numeriques/tp/style.sty
rename to communications-numeriques/tp/styles.sty
index 013c20c..6d7a2c4 100644
--- a/communications-numeriques/tp/style.sty
+++ b/communications-numeriques/tp/styles.sty
@@ -1,4 +1,4 @@
-\ProvidesPackage{style}
+\ProvidesPackage{styles}
 
 \usepackage[
     %showframe,