In the place of "Find the sum of all products whose...", I would say: "Find the number of all products whose..." ;-)
Why  instead of 0?
Since I have kludged a solution together, can I have a hint?
this solution works on my comupter
I see the first test command line is corrupted
:( :( :(
I've fixed that first line in the test suite. Try it again.
Remove the polynomials that have positive real elements of their roots.
Return unique values without sorting
find radius of cone
Make roundn function
Without the French accent please!
Decrypt the cypher using XOR encryption (for beginners)
Negation and new variables
Mysterious digits operation (easy)
Magic is simple (for beginners)
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