Too bad this problem number has a '5' in it! :-)
Any suggestions on my brute force method?
sorry, I added a couple of test cases to discourage this sort of solutions
Which doors are open?
Rotate a Matrix
sum of first 'n' terms
Create an index-powered vector
Back to basics - mean of corner elements of a matrix
yet another flying fly (YAFF)
Five steps to enlightenment
singularity 2.0 (hard)
Knights and Knaves (part 1)
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