I think that with this kind of problem, you can process in two steps.
A first easy problem with small N (to test perms for example). And a harder problem with big N, which
oblige to find another algorithm.
Make a checkerboard matrix
Swap the first and last columns
Construct a string from letters and counts
frame of the matrix
Simple equation: Annual salary
Fun with a compass
Generate a Parasitic Number
How brilliant are you?
How many days?!?
Hackathon - String version
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