Stacking Cubes

Stacking Cubes


In this mission you'll have to stack the cubes.

You are given a list of cube details (a tuple of 3 integers: X coordinate, Y coordinate, and edge length).
You have to return the maximum stacking height of the cubes.

    Here are some of the conditions:
  • each coordinate is the minimum value;
  • all edges are parallel to the coordinate axes;
  • the order of cube stacking is arbitrary, but the X and Y coordinates of the cubes can't be changed;
  • if at least 1x1 faces of the cubes touch, they will be stacked.


  • You don't necessarily need to use all of the cubes.

Examples :

stacking_cubes([(0, 0, 2), (1, 1, 2), (3, 2, 2)]) == 4
stacking_cubes([(0, 0, 2), (1, 1, 2), (1, 2, 1), (2, 2, 2)]) == 6
stacking_cubes([(0, 0, 2), (0, 2, 2), (0, 2, 2), (2, 0, 2), (2, 0, 2), (2, 0, 2), (2, 0, 2)]) == 8
example example example

Input: A list of tuples of 3 integers.

Output: An integer.


  • 2 ≤ len(cubes) ≤ 50
  • -100 ≤ X, Y coordinate ≤ 100
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.

Pair Programming (Beta-version)

Welcome to Pair Programming! Engage in real-time collaboration on coding projects by starting a session and sharing the provided unique URL with friends or colleagues. This feature is perfect for joint project development, debugging, or learning new skills together. Simply click 'Start Session' to begin your collaborative coding journey!

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