Since the vast majority of recent problems are how to hack Cody, here's another one, with an even more malformed test suite than the original singularity.
Good luck hacking this one.
One interesting spin is: can you solve this problem using a freepass?
It will, but will the freepass work again if I rescore the solution? :-)
Now you're just showing off... :-P
Given a 4x4 matrix, swap the two middle columns
Get me! v3
06 - Matrix Equations 1
That's some divisor you've got there...
Miles to go before I sleep
Decimation - Optimized for speed
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