Project Euler: Problem 9, Pythagorean numbers
Project Euler: Problem 16, Sums of Digits of Powers of Two
Get the length of a given vector
Rotate a Matrix by 90 degrees
Unique: Enhanced Performance - Avoiding Memory Crash
Spherical radius given four points
GJam March 2016 IOW: Polynesiaglot Large
GJam: 2013 China Event: Cannon Angle
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