\documentclass[12pt]{report}
\usepackage[T1]{fontenc}
\usepackage[french]{babel}
\usepackage[autolanguage]{numprint}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage[colorinlistoftodos]{todonotes}
\usepackage{sectsty}
\usepackage{algorithm}
\usepackage[noend]{algpseudocode}
\usetikzlibrary{shapes.geometric , arrows,calc}
\sectionfont{\Huge}
\subsectionfont{\LARGE}
\subsubsectionfont{\Large}
\paragraphfont{\large}
\subparagraphfont{\normalsize}
\setlength{\parskip}{\baselineskip}
\setlength{\parindent}{15pt}
\setlength {\marginparwidth }{2cm}
\usepackage[scale=0.75,top=2cm,bottom=2cm]{geometry}


\begin{document}

\begin{titlepage}

\newcommand{\HRule}{\rule{\linewidth}{0.5mm}} % Defines a new command for the horizontal lines, change thickness here

\center % Center everything on the page
\textsc{\small \textbf{république algérienne démocratique et populaire
ministre de l'enseignement supérieure et de la recherche scientifique
université des sciences et de la technologie Houari Boumediene}}\\[0.5cm] % Name of your university/college
%   LOGO SECTION
%----------------------------------------------------------------------------------------

\includegraphics[scale=0.17]{logousthb1.png}\\[1cm] % Include a department/university logo - this will require the graphicx package

%----------------------------------------------------------------------------------------
\textsc{\Large Faculté de mathématique}\\[0.5cm] % Major heading such as course name
\textsc{\large Département de Recherche Opérationnelle}\\[0.5cm] % Minor heading such as course title

%----------------------------------------------------------------------------------------

%----------------------------------------------------------------------------------------
%   TITLE SECTION
%----------------------------------------------------------------------------------------
{\huge \bfseries Mémoire}\\[0.5cm]
{\bfseries En vue de l'obtention du Diplôme de Licence \\En Recherche Opérationnelle}\\[0.5cm]
{\large \bfseries Thème}
\HRule \\[0.4cm]
{ \huge \bfseries Algorithme génétique pour la résolution du TSP}\\[0.4cm] % Title of your document
\HRule \\[1.5cm]

%----------------------------------------------------------------------------------------
%   AUTHOR SECTION
%----------------------------------------------------------------------------------------

\begin{minipage}{0.4\textwidth}
\begin{flushleft} \large
\emph{Présenté par:}\\
\textsc{brahimi} Hazem \\% Your name
\textsc{mahfoudi} Khaled
\end{flushleft}
\end{minipage}
~
\begin{minipage}{0.4\textwidth}
\begin{flushright} \large
\emph{Encadré par:} \\
Mr. \textsc{lamini} % Supervisor's Name
\end{flushright}
\end{minipage}\\[4.0cm]

% If you don't want a supervisor, uncomment the two lines below and remove the section above
%\Large \emph{Author:}\\
%John \textsc{Smith}\\[3cm] % Your name

%----------------------------------------------------------------------------------------
%   DATE SECTION
%----------------------------------------------------------------------------------------

{\large \today}\\ % Date, change the \today to a set date if you want to be precise



\vfill % Fill the rest of the page with whitespace

\end{titlepage}
\end{document}