test 8 is not a symmetric matrix, is it a projector matrix?
Sorry about that one. I've removed that test case. I don't know how long it will take for the re-scoring to propagate, though.
Reverse Run-Length Encoder
Sorted highest to lowest?
Find the sum of the elements in the "second" diagonal
What is Sum Of all elements of Matrix
Divisible by n, prime divisors - 11, 13, 17, & 19
Lights Out 2 - 5x5, 4 moves
Lights Out 1 - 5x5, 3 moves
Lights Out 3 - 5x5, 6 moves
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