### striver_79's blog

By striver_79, history, 4 years ago,

I have been uploading video editorials(B, C and D mostly) for Div-2 and Div-3 rounds. The videos are generally updated within 5/6 hours after the contest ends. This blog will contain all the video links. It will be updated after every contest gets over and the videos are uploaded.

Round 645:

Educational Round:

• Problem DLink (N log^2 Approach) (Binary Search + Fenwick Trees)

• Problem DLink (N log N Approach) (Binary Lifting on Fenwick Trees)

Round 643:

Round 642:

Round 641:

Round 638:

Educational Round #86:

Round #637:

Round #636:

Round #635:

Round #633:

If you feel I can improve in any aspect, please drop in your valuable advice below. Please do-not expect me to make editorials on Div2-E or above because I solve it sometime during the contest hours due to the time constraint.

P.S: I never posted this, because I doubted on myself whether I could do it for long or not, on whether people will understand the explanations or not.

• +140

| Write comment?
 » 4 years ago, # |   +2 Thank you for putting the effort here, I've been following those upsolves. This has been a great resource!
 » 4 years ago, # |   +1 I like the way you explained yesterday's problem D , it feels really awesome when you finally understand solution. Specially constructive problems!
 » 4 years ago, # |   +1 Amazing video. Really helpful fun for us beginners. Please continue to do so and help us. Thank you!
 » 4 years ago, # |   +1 God Bless you!
 » 4 years ago, # |   +1 Very Well Explained Bro ! Thankyou for your Efforts
 » 4 years ago, # |   0 Auto comment: topic has been updated by striver_79 (previous revision, new revision, compare).
 » 4 years ago, # |   0 a little correction: it should be problem c instead of problem f in today's round.
•  » » 4 years ago, # ^ |   0 Thanks, I simple copy pasted, and changed the link, forgot to change the text, updated! Thanks!
 » 4 years ago, # |   0 Thank you bro for this much effort ,this helped me a lot
 » 4 years ago, # |   0 Good work man learned a lot from your videos.
 » 4 years ago, # |   0 These video editorial are really helpful for beginners like me. Thank you
 » 4 years ago, # |   0 Really good editorials. The best thing is that you run on each test case step by step and then explain your code properly. And even the voice quality is good.
»
4 years ago, # |
+3

# Yes your videos helped me so much !!

Could you plz make some video in 1d,2d,3d cumulative sum? and matrix exponentiation,gaussian elimination,hashing(multi hashing mostly). plzzzzzzzzzzzzz

 » 4 years ago, # |   +5 Hi this is good idea and i can help you if you want!