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.
The Goldbach Conjecture
Increment a number, given its digits
Back to basics 23 - Triangular matrix
Calculate the area of a triangle between three points
Number of paths on a grid
Disjunctive Normal Form
Method of Common Differences part-1
Method of Common Differences part-2
Conjunctive Normal Form
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