I am sure there are other more subtle ways to go about it but this seems about as fast as I can make it for a general brute-force solution (0.11s)
This one seems to work for the large test case, too, although it is not a general solution [for size(p,1)>100 it only tests corner points].
Make an N-dimensional Multiplication Table
Calculate the Hamming distance between two strings
matrix of natural number
Is this triangle right-angled?
Elastic Collision 001: 1-D
USC Fall 2012 ACM: Driving the Rover
Kaggle: Reverse Game of Life - Single Move to One Cell Case
Alias abs to asb
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