The Highest Building

The Highest Building

English RU UK

The main architect of the city wants to build a new highest building.
You have to help him find the current highest building in the city.


Input: Heights of the buildings as a 2D-list. Building height is defined as a column in a list.

Output: The number of the highest building and height of it as a list of integers (Important: in this task the building numbers starts from "1", not from "0").


assert highest_building([[0, 0, 1, 0], [1, 0, 1, 0], [1, 1, 1, 0], [1, 1, 1, 1]]) == [
assert highest_building([[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 1]]) == [

How it is used: Every true programmer should know how to work with the 2D-lists.


  • array width <= 10;
  • array height <= 10;
  • there is only 1 highest building in each array.

Invalid hot key. Each hot key should be unique and valid
Hot keys:
CheckiO Extensions

CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.

In order to install CheckiO client you'll need installed Python (version at least 3.8)

Install CheckiO Client first:

pip3 install checkio_client

Configure your tool

checkio --domain=py config --key=

Sync solutions into your local folder

checkio sync

(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)

checkio serv -d

Alternatevly, you can install Chrome extension or FF addon

checkio install-plugin
checkio install-plugin --ff
checkio install-plugin --chromium

Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.

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