How to do this little hack ?
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Determine Whether an array is empty
Wrapping the Tower of Pisa
CONVERT TAN TO SIN
Free passes for everyone!
Mirror, mirror on the wall, who is fairest of them all?
Numbers spiral diagonals (Part 2)
Recycled Numbers (CodeJam Qualification Round 2012)
Negation and new variables
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