Contribution #32

Problem: ru/6.6.20

Added 1.2.10 1.2.13 1.2.2 1.2.3 1.2.8 6.4.12 6.6.20 7.1.10 7.4.22 7.4.23 8.2.16

Editor: Aliaksandr Melnichenka ( @astrosander )

Time: October 10, 2023 at 01:16 PM

+225 -48 lines changed