you should ease up numerically on equality, so my solution works :)
The polar inertia is the sum of the squared distances of all points from the origin. https://en.wikipedia.org/wiki/Polar_moment_of_inertia
Sum of diagonal of a square matrix
Make a 1 hot vector
Relative ratio of "1" in binary number
An asteroid and a spacecraft
Size of this cup?
wait for me
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