Your solution is fastest so far.
Good job, Athi.
@Athi, your solution contains many "magic" constant variables that I don't know how you got.
William's solution is much easier to understood, although it is slower than yours.
Thanks li haitao.
Omit columns averages from a matrix
Energy of a photon
Lights Out 7 - 5x5, x moves
Fill-a-pix - Solver (basic)
The 5th Root
Scrabble Scores - 4
Stress-Strain Properties - 2
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