Hello Codeforces,
On July 2018 the JUST Summer Training 2018 was held in the Jordan Univeristy of Science and Technology Presented By Ibraheem Tuffaha Vendetta., Covered one topic: Segment Tree. The training is published on youtube on SolverToBe channel
*note: language of training is Arabic.
Lecture 1
Segment Tree I
Lecture 2
Segment Tree II and Lazy Propagation
Lecture 3
Segment Tree III
Good Luck!