\documentclass[
  10pt,
  a4paper,
  oneside
]{scrbook}

% Deal with overfull lines.
% https://texfaq.org/FAQ-overfull
\setlength{\emergencystretch}{3em}
\hbadness=99999

\usepackage[a4paper]{geometry}
\usepackage[french, english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{graphicx}
\PassOptionsToPackage{hyphens}{url}
\usepackage{hyperref}
\usepackage{booktabs}
\usepackage{stmaryrd}
\usepackage{cite}

% packages for algorithm formatting
\usepackage{algorithm}
%\usepackage{algorithmic}
\usepackage{algpseudocode}

\usepackage[table]{xcolor}
\usepackage{amssymb,amsmath}

%custom packages
\usepackage{adjustbox}
\usepackage[normalem]{ulem}
\usepackage{xcolor}
\usepackage{enumerate}
\usepackage{multirow}
\usepackage{adjustbox}
\usepackage{booktabs}
\usepackage{longtable}
\usepackage{tabu}
\newtabulinestyle{hdashline=0.5pt on 0.5pt off 2pt}
\usepackage{float}
\usepackage{caption}

\definecolor{material_red}{HTML}{d50000}
\definecolor{material_green}{HTML}{00c853}
\definecolor{material_blue}{HTML}{2962ff}

\graphicspath{{graphics/}}
\DeclareGraphicsExtensions{.pdf, .png}

\newcommand{\kat}[1]{\noindent\textcolor{material_red}{\textbf{Katerina:} #1}}
\newcommand{\mk}[1]{\noindent\textcolor{material_green}{\textbf{Manos:} #1}}
\newcommand{\dk}[1]{\noindent\textcolor{material_blue}{\textbf{Dimitris:} #1}}

\newtheorem{definition}{Definition}
\newtheorem{example}{Example}[section]
\newtheorem{proposition}{Proposition}
\newtheorem{theorem}{Theorem}
\newtheorem{corollary}{Corollary}[theorem]

\begin{document}

\input{titlepage}

\frontmatter

\input{abstract}
\input{acknowledgements}

\tableofcontents

\listofalgorithms
\listoffigures
\listoftables

\mainmatter

\nocite{*}

\input{introduction}
% \input{background}
% \input{related}

\backmatter

\bibliographystyle{alpha}
\bibliography{bibliography}

\end{document}