I think there is a problem with the test or tests, since even the default solution fails to evaluate with 'Parse error' indicated.
I agree. Function names cannot start with numbers, so this problem should be revised.
The server encountered an error while evaluating the solution.
Remove the polynomials that have positive real elements of their roots.
Knight's Tour Checker
Project Euler: Problem 6, Natural numbers, squares and sums.
Implement simple rotation cypher
Length of a short side
Back to basics 13 - Input variables
Back to basics 9 - Indexed References
Better bullseye matrix
Back to basics 4 - Search Path
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