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TutorialCompetitiv…1y

Binary Indexed Trees (aka Fenwick Tree)by Wiki

The motivation for binary indexed trees is similar to that of segment trees. However, note that segment trees are much more flexible than binary indexed trees, and usually its true that any pr...

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Andrei Grigorean1y

I also wrote a tutorial on CS Academy.

It's still a work in progress, so please help me improve it. Any feedback is appreciated.