Very sneaky noticing this pattern in the answers.
Back to basics 1 - Saving
Return unique values without sorting
length of a vector
Write c^3 as sum of two squares a^2+b^2
Word Distance - Average Sort
Mechanical Advantage of a Gear Train
Lights Out 5 - 5x5, 10 moves
Lights Out 14 - 5x5, four stages, x moves
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