Contribution #1653

Problem: ru/2.1.21

Updated 2.1.15-2.1.22

Editor: Aliaksandr Melnichenka ( @astrosander )

Time: June 25, 2024 at 12:04 PM

GitHub commit: e2bf0bbef19a2e98a148ab7e8fc5d9fa72e31b79

+93 -161 lines changed