The first task will be from [Codesignal](https://app.codesignal.com/) We need to solve the task via usage of [Box Blur algorithm](https://en.wikipedia.org/wiki/Box_blur) <img width="491" alt="Screen Shot 2022-05-31 at 11 33 57" src="https://user-images.githubusercontent.com/11196320/171121990-179233b8-add9-4842-b5bb-6c7a6dd935f9.png">