Uploaded October 2020 | Updated September 2026, 2 weeks ago

---

I will solve some div2 problems from codeforces.com
Go to twitch.tv/errichto for live chat

Subscribe for more educational videos on algorithms, coding interviews and competitive programming.

- Main YT channel with educational videos: youtube.com/errichto
- FAQ & GitHub Wiki: github.com/Errichto/youtube/wiki/FAQ
- Twitch: twitch.tv/errichto