\documentclass{article}

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% Display math.
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% Nice enumerations without wasting space above and below.
\usepackage{enumitem}
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% Headline and bottomline.
\usepackage{scrpage2}
\pagestyle{scrheadings}
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\ihead{Karlsruhe Institute of Technology}
\chead{ChaosKITs}
\ohead{\pagemark}

% Source code listings.
\usepackage{pxfonts}
\usepackage{listings}
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	language={C++},
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% Don't waste space at the page borders.
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% Multicol layout for the table of contents.
\usepackage{multicol}
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% New enviroment for remarks.
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\title{Team Contest Reference}
\author{ChaosKITs \\ Karlsruhe Institute of Technology}
\begin{document}

% Titlepage with table of contents.
\maketitle
\setlength{\columnsep}{1cm}
\begin{multicols}{2}
	\tableofcontents
\end{multicols}
\newpage

\input{datastructures/datastructures}
\input{graph/graph}
\input{geometry/geometry}
\input{math/math}
\input{string/string}
\input{java/java}
\input{sonstiges/sonstiges}
\input{convenience/convenience}

\end{document}