Find the number of points (x,y) in square lattice with x^2 + y^2 =< n. This is related to Jame's Problem 1387. Here you have to find the number of points within a circle.
Remove all the consonants
Back to basics 10 - Max Float
Convert String to Morse Code
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Number of Horns on a unicorn!
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Number of vertices of a hypercube
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