\documentclass[a4paper]{scrartcl}
\usepackage{amssymb, amsmath} % needed for math
\usepackage[utf8]{inputenc} % this is needed for umlauts
\usepackage[ngerman]{babel} % this is needed for umlauts
\usepackage[T1]{fontenc}    % this is needed for correct output of umlauts in pdf
\usepackage{pdfpages}       % Signatureinbingung und includepdf
\usepackage{geometry}       % [margin=2.5cm]layout
\usepackage[pdftex]{hyperref}       % links im text
\usepackage{color}
\usepackage{framed}
\usepackage{enumerate}      % for advanced numbering of lists
\usepackage{marvosym}       % checkedbox
\usepackage{wasysym}
\usepackage{braket}         % for \Set{}
\usepackage{pifont}% http://ctan.org/pkg/pifont
\usepackage{gauss}
\usepackage{algorithm,algpseudocode}
\usepackage{parskip}
\usepackage{lastpage}
\usepackage{gauss}
\usepackage{units}
\usepackage{amsthm}
\allowdisplaybreaks

\newcommand{\cmark}{\ding{51}}%
\newcommand{\xmark}{\ding{55}}%

\title{Numerik Klausur 6 - Musterlösung}
\makeatletter
\AtBeginDocument{
	\hypersetup{
	  pdfauthor   = {Martin Thoma, Peter, Felix},
	  pdfkeywords = {Numerik, KIT, Klausur},
	  pdftitle    = {\@title}
  	}
	\pagestyle{fancy}
	\lhead{\@title}
	\rhead{Seite \thepage{} von \pageref{LastPage}}
}
\makeatother

\usepackage{fancyhdr}
\fancyfoot[C]{}

\begin{document}
	\input{Aufgabe1}\clearpage
	\input{Aufgabe2}\clearpage
	\input{Aufgabe3}
	\input{Aufgabe4}
	\input{Aufgabe5}
\end{document}