My Telegram: https://t.me/rembocoder
The problems:
https://codeforces.com/contest/1805/problem/D
https://codeforces.com/contest/1805/problem/E
The solutions:
https://codeforces.com/contest/1805/submission/200426484
https://codeforces.com/contest/1805/submission/200491269
0:00 D Statement
0:33 D Solution
3:05 D Code
4:04 Rerooting
4:53 Back to D code
5:47 E Statement
6:20 E Solution
9:31 E Code
