Uploaded July 2021 | Updated September 2026, 3 weeks ago
Solving algo problems from codeforces.com
0:00 Intro
1:55 Deleting Divisors codeforces.com/contest/1537/problem/D
48:25 Tree Array (skipped)
50:00 Shurikens codeforces.com/contest/1413/problem/D
1:22:56 Tree Array codeforces.com/contest/1540/problem/B
1:59:21 1/k in O(k) lecture
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
Solving algo problems from codeforces.com
0:00 Intro
1:55 Deleting Divisors codeforces.com/contest/1537/problem/D
48:25 Tree Array (skipped)
50:00 Shurikens codeforces.com/contest/1413/problem/D
1:22:56 Tree Array codeforces.com/contest/1540/problem/B
1:59:21 1/k in O(k) lecture
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
![[hard] Codeforces live coding](https://i.ytimg.com/vi/jh7ISwaUOws/mqdefault.jpg "[hard] Codeforces live coding
Live-solving problems from https://codeforces.com
Chat: https://twitch.tv/errichto
Streaming schedule: https://calendar.google.com/calendar/embed?src=0qldhlvr0oqd867pdi8nkm8s04%40group.calendar.google.com
- FAQ & GitHub Wiki: https://github.com/Errichto/youtube/wiki/FAQ
- Twitch: https://www.twitch.tv/errichto
- Main YT channel with educational videos: https://www.youtube.com/errichto")
