I didn't see that the check for the multiplication symbol was commented out for this test suite until I checked your solution...
Sorry about that. I added a statement that that function restriction is lifted in the problem description. Still, I'm impressed that you were able to solve it without using that function.
No worries. Multiplication without the * symbol is easy enough. There's a reason the final variable in my first solution is named "cheat" though; I had no idea how to accomplish the final check otherwise.
Well, I'll take that as a compliment, then, because your problems are clever and often stump me.
Finding Perfect Squares
Make one big string out of two smaller strings
Multiply a column by a row
Getting the indices from a vector
Is the input divisible by 3?
Legend of Zelda - Rupee Count (Compact)
Rule of mixtures (composites) - weighted bound
Combined Ages 2 - Symmetric, n ≥ 3
Cycling — Normalized Power
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