\usepackage{fancybox}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{ps4pdf}
\usepackage{color}
\usepackage{hhline}
\usepackage{array}
\usepackage{multicol}
\usepackage{ulem}
\usepackage{multirow}
\usepackage{amsmath}
\usepackage{fancyhdr}
\usepackage{colortbl}
\usepackage{frcursive}
\usepackage{amssymb}
\usepackage{mathrsfs}
\usepackage{graphicx}
\usepackage[export]{adjustbox}
\usepackage{tabularx}
\usepackage{esint}
\usepackage{fancybox}
\usepackage{pifont}
\usepackage{xcolor}
\usepackage{enumitem}
\usepackage{setspace}
\usepackage{empheq}
\usepackage{tikz}
\usepackage{listings}
\usepackage{stackrel} %\stackrel[bas]{haut}{=}