Drone Trips
You need to transport three empty boxes using a drone that can only lift one box at a time on each trip. In other words, you can always transport the three empty boxes by making three trips with the drone. But you might be able to do less than three trips if you can put one box inside another. The boxes are cube-shaped and the only restriction on placing one box inside another is size, regardless of weight.
A box of size X can be placed inside a box of size Y if X < Y. Note, therefore, that a box does not fit inside another of the same size. Furthermore, two boxes of sizes X and Y can be placed side by side inside a box of size Z if (X+Y) < Z.
The following scheme illustrates the four possible configurations for the drone to make a trip.
In this problem, the sizes of the three boxes are given in ascending order and your program must compute the minimum number of trips the drone can make to transport all three boxes.
Input: Three integers (int).
Output: Integer.
Examples:
assert flights(1, 2, 4) == 1 assert flights(1, 2, 2) == 2 assert flights(2, 2, 5) == 1
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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