Not sure why the problem title says "3x3 matrix", then uses non-3x3 matrices in the example and test suite. Considering rewording for clarity.
The problem description has been updated and new test cases are added.
Works only because of limited test suite.
Back and Forth Rows
Energy of a photon
Create a Multiplication table matrix...
Is it an Armstrong number?
07 - Common functions and indexing 5
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