As usual, we practiced on AtCoder Beginner Contest and solved all problems until and including F on the first try. I also had an idea for G but didn't even try to optimize it due to the lack of time.
Timestamps:
0:00 Intro
2:00 Problem A
3:07 Problem B
5:48 Problem C
12:26 Problem D
17:04 Problem E
37:01 Problem F
1:16:06 Problem G
1:31:25 Explanations
Frequently Asked Questions:
https://github.com/mitkonikov/competi...
Collection of Algorithms and Data Structures:
https://github.com/mitkonikov/atlas