Now that we’ve had two sessions on DP, we can either move on to another topic now, or have a third session on DP before jumping to the next topics. What do you prefer?

Today contest livestream:

https://www.youtube.com/watch?v=zy3Q2mxghac

I'll be live to discuss all the problems of Educational Round 169 in 20 minutes!

https://www.youtube.com/watch?v=lLxXb5tDjs0

It was a close competition between DP and Graph.

I’ll cover DP #3 tomorrow, and then we’ll take a break from DP to give everyone some time to practice what we've discussed.

Next week, we’ll have our topic stream on Graph.

Thank you all for your votes, comments, and suggestions!

Today's contest solutions A - F:

https://codeforces.com/blog/entry/132734

You can join the group to discuss any of the problems.

https://t.me/+GUbLBTEzOZFjOTc0

What will be covered in this livestream:

Prefix Sums (different types), LCS, and several multi-dimensional DP problems with difficulty 2000+

You won’t need any prior knowledge to understand the solutions discussed.

Sorry for postponing today’s livestream. I know some of you may have planned for it, and I apologize for the inconvenience.
I’ll be hosting the topic stream tomorrow (Saturday) at the same time (12 - 14 GMT). I hope that still works for you. Please let me know in the comments below if this time does not work for you.

Re-scheduled Topic Stream 3:

https://www.youtube.com/watch?v=dH5KKXqLz08

By tomorrow, I mean Saturday.

Today’s topic stream: (Dynamic Programming 3, LCS, MC from SPOJ, Div 1. D multi-dimensional DP problem solved easily)

https://youtube.com/watch?v=dH5KKXqLz08&feature=youtu.be

Part of my interview with Um_Nik

"Anyone can be a grandmaster"

https://www.youtube.com/watch?v=rJzSJ5sispE

I'll be live in 45 mins to discuss the solutions of Codeforces Round 967 (Div 2)

https://www.youtube.com/watch?v=MqRyqCoi6Lc

The solutions of problems A - E1 of today's contest:

https://codeforces.com/blog/entry/132965

For further discussion, you can join the discussion group:

https://t.me/+GUbLBTEzOZFjOTc0

This Friday, I’ll be hosting our first topic stream on Graph Algorithms:

https://www.youtube.com/watch?v=l1JQhPBwrsY

You can watch the previous topic streams in this playlist:

https://www.youtube.com/playlist?list=PLzDmwrrgE-UVnyEtA-_zuffIm3smCO2eA

We have our first topic stream on Graphs in 10 minutes! Since this is the first stream on Graphs, we’ll start with the basics. However, we’ll also cover some challenging problems towards the end. If you’re more interested in advanced topics, feel free to join us during the second hour of the stream. You don’t need any prerequisites to understand everything we’ll cover. Here’s what we’ll go over in this session:

• What is a Graph?
• Types of Graphs
• How to store a graph in a computer
• Checking if a graph is connected
• 1400 Difficulty CF problem
• 1700 Difficulty CF problem
• Characteristics of DFS

https://www.youtube.com/watch?v=l1JQhPBwrsY

The first topic stream on Graph Algorithms:

https://codeforces.com/blog/entry/133099

For further discussions, feel free to join the discussion group:

https://t.me/+GUbLBTEzOZFjOTc0

This week, there’s a contest on Friday, so we’ll have our weekly topic stream on Thursday instead, at the same time (12 - 14 GMT). It’s starting to get more interesting, and we’ll gradually move on to more advanced topics!

https://www.youtube.com/live/egZLWgbShPE

You can watch the previous topic streams here:

https://www.youtube.com/playlist?list=PLzDmwrrgE-UVnyEtA-_zuffIm3smCO2eA

I especially encourage you to watch Graph #1 to ensure you’re on board and ready for Graph #2.