Contribution #1405

Problem: ru/1.1.12

Updated 1.1.10-1.1.15 solutions

Editor: Aliaksandr Melnichenka ( @astrosander )

Time: June 14, 2024 at 01:25 PM

GitHub commit: 3f8370c4a1ad0c0bc3c4e1120cecc08acb0cde01

+149 -190 lines changed