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.
Column norms of a matrix
Make a simplified barcode
Will there be a new leader?
Now 20% off!
Longest run of consecutive numbers
Two fractions, one sum
Unique dice configurations
Hackathon - String version
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