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The Coder of Rivia

Start date: Aug. 7, 2021, 5 p.m. UTC
Given a 3x3 matrix, find the nearest matrix, the sum of whose elements in each row and column is equal.

Toss a coin to your Coder, O’ Valley of Plenty!

The first three programmers to prevail over this challenge in the least amount of time will be added to the Codility Hall of Fame, winning the Netflix gift cards and of course, bragging rights across the Continent.

Once The Coder of Rivia challenge has ended (on August 21st), you will still be able to take the challenge, and gain certificates, but will no longer be in the running for prizes.

Good luck on your path to victory!

About Codility

We help engineering leaders hire great software developers into their teams by evaluating technical skills in an unbiased way. We’re committed to levelling the playing field by building a platform that provides equal opportunity to all developers worldwide. Interested in joining us? We’re currently hiring engineers to work remotely from all over Europe.

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:

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2418 started 5 silver awards 283 golden awards

Hall of fame:

Xuan Bach Tran
Time: 5 minutes
Neil Thistlethwaite
Time: 6 minutes
Roman Hultaichuk
Time: 11 minutes