Codeforces Round 670 Solutions + Set Solve (49th)

Solutions to all problems at the end of the video.
I competed in Codeforces Round 670 with some live commentary about the problems during the contest. The problems are available here for those interested: https://codeforces.com/contest/1406
Timestamps:
0:00 Good Morning
0:45 Problem A
3:20 Problem B
9:00 Problem C
32:48 Problem D
54:33 Problem E
1:52:40 Commentary on Set
1:55:50 Problem A Solution
1:58:42 Problem B Solution
2:03:01 Problem C Solution
2:07:13 Problem D Solution
2:16:30 Problem E Solution
2:29:29 Commentary part 2

Видео Codeforces Round 670 Solutions + Set Solve (49th) канала SecondThread