%\usepackage[T1,T2A]{fontenc}
%\usepackage[utf8]{inputenc}
\usepackage[english,russian]{babel}
\usepackage[labelformat=empty]{caption}
\usepackage{listings}
\usepackage{url}

% https://tex.stackexchange.com/questions/317486/preserve-leading-whitespace-in-verbatim-environment
%\usepackage{fancyvrb}

% narrow margins
% https://en.wikibooks.org/wiki/LaTeX/Page_Layout#Margins
\usepackage[cm]{fullpage}

\usepackage{fontspec}
\setmainfont{FreeSerif}
\setsansfont{FreeSerif}
\setmonofont{FreeMono}
\usepackage{fancyvrb}

%\setmainfont{DejaVu Serif}
%\setsansfont{DejaVu Sans}
%\setmonofont{DejaVu Sans Mono}

%\frenchspacing

\lstset{
        basicstyle=\footnotesize\ttfamily,
        breaklines=true,
}