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Fast Hadamard transform
Algorithms
Problems
Nim
1
Random Nim Generator
And Closure
Little Pony and Elements of Harmony
2
See also
Fast Fourier transform
External links
Fast Fourier Transform and variations of it
Fast Fourier Transform and variations of it
https://apps.topcoder.com/wiki/display/tc/SRM+518
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http://codeforces.com/blog/entry/13190
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