Contribution #1507

Problem: ru/1.5.4

Updated 1.5.1,2,5,9-10 Added 1.5.3-4,6-8

Editor: Aliaksandr Melnichenka ( @astrosander )

Time: June 23, 2024 at 05:20 PM

GitHub commit: 6c5055e91460f1f07f4c5aeb053e7f687f0669d3

+87 -10 lines changed