\documentclass[a4paper]{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[russian]{babel}
\usepackage[T1]{fontenc}  % this is needed for correct output of letters in pdf

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\begin{document}
\subsection{Русский}
Все люди рождаются свободными и равными в своем достоинстве и
правах.
\end{document}