Tree Queries using LCA
2:41:59
Binary Lifting & Sparse Table
2:55:56
Divide & Conquer and Segment Tree
2:02:13
Small To Large Merging
3:26:55
Queries on Trees (Euler Path - MO's on Trees)
1:38:34
Segment Tree (part 1)
2:33:09
SQRT Decomposition & MO's Algorithm
2:49:06
Lazy Propagation & Reusable Segment Tree Template
8:51