Remove the polynomials that have positive real elements of their roots.
Numbers with prime factors 2, 3 and 5.
Sum of diagonal of a square matrix
Is the Point in a Circle?
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Trace the path of a harmful chemical in an ecological network
Propagate the effects of a blockage in a chemical plant
Maximize the production in a plant within equipment capacity
Find an optimal placement of coolers on a grid
Convert a temperature reading from Celsius to an unknown scale
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