<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass{article} 
\usepackage{cmap-cyr-vf}
\usepackage[LCYW]{fontenc}
\usepackage[koi8-r]{inputenc}
\usepackage[english,russian]{babel}

\begin{document}

\begin{abstract}
Проверка
\end{abstract}

Все!

\end{document}
</pre></body></html>