One Code to Rule Them All!
The first three brave dwellers of Middle-earth to solve the challenge perfectly in the least amount of time will be added to the Codility Hall of Fame, winning a package of swag and of course, bragging rights. The first place winner will also claim a precious copy of Fluent Python by Luciano Ramalho; may it be a guide to you in dark places, when all other guidance goes out.
Once The Fellowship of the Code Challenge has ended (on June 19th), you will still be able to take the challenge, and gain certificates, but will no longer be in the running for prizes.
Good luck in your coding adventure!
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The challenge is now over, but you may still practice on this task. Below, you can also find a video with explanation of possible solutions for the task: