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].
Find the palindrome
Dimensions of a rectangle
Find a Pythagorean triple
ismember: Enhanced Time Performance for 'rows' - Speed Scoring (90% savings)
GJam 2011 Africa Qualifier C: House, maximum area rectangle
Map all the indices of an Array Indices into a Vector giving Index vs Row and Column
Rubik's Cube: 30 Moves or Less: Minimum Avg Time
GJam 2015 Rd1B: Noisy Neighbors
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