header.tex

\documentclass[10pt,landscape]{article}
\usepackage[italian]{babel}
\usepackage[utf8]{inputenc}
\usepackage{multicol}
\usepackage{calc}
\usepackage{ifthen}
\usepackage[landscape]{geometry}
\usepackage{hyperref}
\usepackage{bookmark}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{tabularx}
\usepackage{caption}
\usepackage{verbatim}
\usepackage{systeme}
\usepackage{nicefrac}
\usepackage{accents}
\usepackage{enumitem}
\usepackage[printwatermark]{xwatermark}
\usepackage{tikz}
\usetikzlibrary{calc,matrix}
\usepackage[compact]{titlesec}
\usepackage{microtype}
\usepackage[flushleft]{threeparttable}
\usepackage{textcomp}
\usepackage{pifont}
\usepackage{pgfplots}
\usepackage{float}
\usepackage{mathtools}
\usepackage{todonotes}
\usepackage{amsfonts}
\usepackage[ruled,vlined]{algorithm2e}
\usepackage{lastpage}

\geometry{top=.5in,left=.5in,right=.5in,bottom=.5in,headsep=0in}

% Turn off header and footer
\pagestyle{empty}

% Reduce size of \section e \subsection
\titleformat{\section}{\normalfont\large\bfseries}{\thesection}{1em}{}
\titleformat{\subsection}{\normalfont\normalsize\bfseries}{\thesubsection}{1em}{}
\titlespacing{\section}{0pt}{0ex}{-0.5ex}
\titlespacing{\subsection}{0pt}{0ex}{-0.5ex}

% Define BibTeX command
\def\BibTeX{{\rm B\kern-.05em{\sc i\kern-.025em b}\kern-.08em
		T\kern-.1667em\lower.7ex\hbox{E}\kern-.125emX}}

% Don't print section numbers
\setcounter{secnumdepth}{0}


\setlength{\parindent}{0pt}
\setlength{\parskip}{0pt plus 0.5ex}

\setlist[itemize]{noitemsep, nolistsep}

% No algorithm numbering
\renewcommand{\thealgocf}{}
% do-while
\SetKwRepeat{Do}{do}{while}

\newcommand{\rarr}{\rightarrow}

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

\pagenumbering{arabic}
\pagestyle{fancy}
\fancyhead[R]{Page \thepage{} of \pageref{LastPage}}
\fancyhead[L]{}
\fancyfoot[C]{}
\renewcommand{\headrulewidth}{0pt}