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.
Better bullseye matrix
Get the elements of diagonal and antidiagonal for any m-by-n matrix
sum of non-primes
Find last zero for each column
Given a square and a circle, please decide whether the square covers more area.
Evened up (or not)
Lights Out 8 - 5x5, light-only solution? I
Radiation Heat Transfer — View Factors (4)
Dice roll - lateral faces
Stress-Strain Properties - 8
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