\documentclass[a4paper,10pt, landscape, twocolumn]{article}
\usepackage{myXsim}

% Title Page
\title{DS 2 \hfill TST3}
\date{2 octobre 2020}
\duree{15 minutes}

\pagestyle{empty}

\DeclareExerciseCollection{banque}
\xsimsetup{
    step=2,
    type=automatismes,
}

\begin{document}
\input{exercises.tex}

\maketitle

\medskip
{\Large Nom - Prénom: \dotfill}

\medskip
Calculatrice non autorisée

\printcollection{banque}

\pagebreak

\maketitle

\medskip
{\Large Nom - Prénom: \dotfill}

\medskip
Calculatrice non autorisée

\printcollection{banque}

\end{document}

%%% Local Variables: 
%%% mode: latex
%%% TeX-master: "master"
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