Calculate the volume of a pillar with radius l and heigth ar.
The test suite should take into account the inherent imprecision of floating-point numbers.
Which values occur exactly three times?
Distance walked 1D
Find the sum of the elements in the "second" diagonal
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Doubling elements in a vector
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