Please change the example [188 289] in your problem description to [188 189], as I believe [188 289] should return [9 1], rather than [9 9]. (By the way, great job picking 189 to use for a check. Right at the end of the two-digit numbers.)
uint8 is our friend.
2 b | ~ 2 b
Back to basics 14 - Keywords
Whether the input is vector?
Check if number exists in vector
Number of paths on a grid
nth Rational Number
Index of a Rational number
Disjunctive Normal Form
Number of cyles and fixed points in a permutation
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