Uploaded May 2021 | Updated September 2026, 2 weeks ago

---

Screencast of codeforces.com/contest/1523

Streaming schedule: calendar.google.com/calendar/embed?src=0qldhlvr0oqd867pdi8nkm8s04%40group.calendar.google.com

- FAQ & GitHub Wiki: github.com/Errichto/youtube/wiki/FAQ
- Discord: discord.gg/YWb3Bmg
- Twitch: twitch.tv/errichto
- Main YT channel with educational videos: youtube.com/errichto