graphs, tree, segment tree

Can anyone suggest me a place from where i can begin(from scratch) with graphs ,trees, segment trees.?
any links or video tutorials suggestions will be very helpful.

To me this seems to be the toughest part…any help regarding this topics are most welcomed :slight_smile:

This is a great channel for various Graph theory algorithms and Specially segment tree :slight_smile:

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thanks bro ,any sites where i can read and learn ?

HERE!!

https://discuss.codechef.com/questions/48877/data-structures-and-algorithms

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