Streams
 
 
 
 
Past streams
 
 
Name Streamer Start time Platform Created Updated

USACO Gold Platinum Analysis

Errichto Jan/14/2026 23:01 YouTube 4 months ago 4 months ago

USACO Bronze Silver Analysis

Errichto Jan/13/2026 23:01 YouTube 4 months ago 4 months ago

CSES Dynamic Programming part 2

Errichto Aug/10/2025 15:30 Twitch 9 months ago 9 months ago

CSES Dynamic Programming part 1

Errichto Aug/09/2025 13:00 Twitch 9 months ago 9 months ago

Checking out problems from IOI day 2

Errichto Aug/03/2025 16:15 Twitch 9 months ago 9 months ago

IOI day 2 commentary

Errichto Aug/01/2025 18:00 Twitch 10 months ago 10 months ago

IOI Live Commentary

Errichto Jul/30/2025 17:00 Twitch 10 months ago 10 months ago

[Div2] Edu #181 stream

Errichto Jul/27/2025 16:00 Twitch 10 months ago 10 months ago

Div2 CF problem-solving

Errichto Jul/16/2025 16:00 Twitch 10 months ago 10 months ago

Div1 CF problem-solving

Errichto Jul/15/2025 16:00 Twitch 10 months ago 10 months ago

CSES Introductory Problems p2

Errichto Jul/13/2025 12:00 Twitch 10 months ago 10 months ago

CSES Introductory Problems

Errichto Jul/12/2025 12:00 Twitch 10 months ago 10 months ago

ABC AtCoder problem-solving

Errichto Jul/11/2025 16:00 Twitch 10 months ago 10 months ago

ARC AtCoder problem-solving

Errichto Jul/10/2025 16:00 Twitch 10 months ago 10 months ago

Div2 CF problem-solving

Errichto Jul/08/2025 15:35 Twitch 10 months ago 10 months ago

Div1 CF problem-solving

Errichto Jul/07/2025 10:00 Twitch 10 months ago 10 months ago

Div2 CF problem-solving

Errichto Jul/06/2025 16:00 Twitch 10 months ago 10 months ago

Div1 CF problem-solving

Errichto Jun/30/2025 13:00 Twitch 11 months ago 11 months ago

Div2 CF problem-solving

Errichto Jun/29/2025 12:00 Twitch 11 months ago 11 months ago

Codeforces problem-solving

Errichto Jun/28/2025 15:35 Twitch 11 months ago 11 months ago

Linux Geany setup | back to programming streams

Errichto Jun/27/2025 12:33 Twitch 11 months ago 11 months ago

Advent of Code, last 4 problems

Errichto Dec/31/2024 16:00 Twitch 17 months ago 17 months ago

Advent of Code problem-solving

Errichto Dec/30/2024 18:35 Twitch 17 months ago 17 months ago

Advent of Code problem-solving

Errichto Dec/20/2024 19:30 Twitch 17 months ago 17 months ago

Advent of Code problem-solving

Errichto Dec/12/2024 21:30 Twitch 17 months ago 17 months ago

IOI watch party day 2

Errichto Sep/05/2024 11:00 Twitch 20 months ago 20 months ago

IOI watch party

Errichto Sep/03/2024 11:00 Twitch 20 months ago 20 months ago

Random Div. 2 Problem-Solving

Errichto Jun/23/2024 14:30 Twitch 23 months ago 23 months ago

Random Div. 2 Problem-Solving

Errichto Jun/16/2024 11:15 Twitch 23 months ago 23 months ago

Short ICPC EUC Commentary

Errichto Mar/24/2024 13:36 Twitch 2 years ago 2 years ago

Writers - POI optimization task

Errichto Jul/26/2023 17:00 Twitch 3 years ago 3 years ago

CSES Robot Path coding

Errichto Jun/28/2023 14:45 Twitch 3 years ago 3 years ago

CSES Problem Solving

Errichto Jun/26/2023 21:26 Twitch 3 years ago 3 years ago

[hard] Upsolving

Errichto Jan/30/2023 18:00 Twitch 3 years ago 3 years ago

TypeDB Forces virtual participation

Errichto Jan/29/2023 20:35 Twitch 3 years ago 3 years ago

Good Bye 2022 virtual participation

Errichto Jan/28/2023 19:00 Twitch 3 years ago 3 years ago

EDU #142 live-solving

Errichto Jan/24/2023 19:35 Twitch 3 years ago 3 years ago

CF #844 EGH

Errichto Jan/23/2023 19:00 Twitch 3 years ago 3 years ago

CF #844 problem-solving

Errichto Jan/22/2023 20:45 Twitch 3 years ago 3 years ago

GHC Upsolving

Errichto Mar/07/2022 17:15 Twitch 4 years ago 4 years ago

Compilation error = remove code [Ukraine charity stream]

Errichto Feb/26/2022 20:00 Twitch 4 years ago 4 years ago

Google Hash Code practice (or AHC?)

Errichto Feb/20/2022 16:05 Twitch 4 years ago 4 years ago

Easy Problems challenges.reply.com (Teen Edition)

Errichto Feb/15/2022 19:00 Twitch 4 years ago 4 years ago

Solving Wordle Game Optimally 2

Errichto Feb/08/2022 19:00 Twitch 4 years ago 4 years ago

Solving Wordle Game Optimally

Errichto Feb/07/2022 19:00 Twitch 4 years ago 4 years ago

100 Easy Problems - P08, P11, P18, P30, P31, P33

Errichto Nov/21/2021 19:15 Twitch 4 years ago 4 years ago

Square Root Techniques, Homework [Hard]

Errichto Nov/10/2021 19:00 Twitch 5 years ago 5 years ago

[Lecture] Square root decomposition, Mo, etc.

Errichto Nov/07/2021 17:00 Twitch 5 years ago 5 years ago

[SHIFTED] Div1 Problems of the Week

Errichto Oct/09/2021 17:30 Twitch 5 years ago 5 years ago

[Hard] Atcoder Grand Contest 054 E - ZigZag Break

Errichto Oct/07/2021 19:05 Twitch 5 years ago 5 years ago

Watching ICPC Dress Rehearsal

Errichto Oct/04/2021 09:05 Twitch 5 years ago 5 years ago

Topic Stream - Meet in the Middle

Errichto Oct/03/2021 14:00 Twitch 5 years ago 5 years ago

Div2 Problems of the Week

Errichto Oct/02/2021 13:00 Twitch 5 years ago 5 years ago

Hard Atcoder Upsolving, AGC 054 D

Errichto Sep/29/2021 19:00 Twitch 5 years ago 5 years ago

Checking Out The Ultimate Topic List

Errichto Sep/26/2021 19:05 Twitch 5 years ago 5 years ago

Upsolving FHC Qual and R1

Errichto Sep/16/2021 19:00 Twitch 5 years ago 5 years ago

3 Hard Interactive Problems

Errichto Aug/05/2021 19:05 Twitch 5 years ago 5 years ago

CF #735 Solutions

Errichto Jul/29/2021 19:35 Twitch 5 years ago 5 years ago

Global 15 Upsolving

Errichto Jul/27/2021 19:05 Twitch 5 years ago 5 years ago

Harbour.Space Contest Discussion

Errichto Jul/22/2021 20:05 Twitch 5 years ago 5 years ago

[Easy] Solving A-D From Tourists Round (#733)

Errichto Jul/20/2021 19:05 Twitch 5 years ago 5 years ago

CF Hard Problems (diff. 2500)

Errichto Jul/15/2021 19:05 Twitch 5 years ago 5 years ago

CF Easy Problems (Div. 3)

Errichto Jul/13/2021 19:20 Twitch 5 years ago 5 years ago

CF #730 (Div. 2) Virtual Participation

Errichto Jul/08/2021 19:05 Twitch 5 years ago 5 years ago

Reading CF Blogs and Chatting

Errichto Jul/06/2021 19:05 Twitch 5 years ago 5 years ago

div1-B CF Problem-Solving

Errichto Jul/02/2021 14:05 Twitch 5 years ago 5 years ago

Easy CF Problem-Solving

Errichto Jun/29/2021 19:30 Twitch 5 years ago 5 years ago

CF Problem-Solving (diff. ~2000)

Errichto Jun/24/2021 19:05 Twitch 5 years ago 5 years ago

IOI predictions and chatting (ft. tmw, Petr, kostka, ...)

Errichto Jun/21/2021 19:00 Twitch 5 years ago 5 years ago

GCJ R3 upsolving

Errichto Jun/10/2021 19:05 Twitch 5 years ago 5 years ago

CF Problem-Solving

Errichto Jun/08/2021 19:05 Twitch 5 years ago 5 years ago

GCJ practice

Errichto Jun/01/2021 19:00 Twitch 5 years ago 5 years ago

Deltix Round solutions A-F

Errichto May/30/2021 19:55 Twitch 5 years ago 5 years ago

Hard Atcoder Upsolving, AGC 46 F

Errichto May/27/2021 19:10 Twitch 5 years ago 5 years ago

Hard Atcoder Upsolving

Errichto May/25/2021 19:30 Twitch 5 years ago 5 years ago

CF 722 Div. 1 Solutions

Errichto May/24/2021 19:50 Twitch 5 years ago 5 years ago

Hard Atcoder Upsolving (One Third, AGC 32 F)

Errichto May/20/2021 19:05 Twitch 5 years ago 5 years ago

Hard Atcoder Upsolving

Errichto May/18/2021 19:05 Twitch 5 years ago 5 years ago

Google Code Jam R2 solutions

Errichto May/15/2021 19:35 Twitch 5 years ago 5 years ago

Segment Tree Implementation (CSES)

Errichto May/06/2021 19:00 Twitch 5 years ago 5 years ago

Hard-ish CF Problems Stream

Errichto May/04/2021 19:10 Twitch 5 years ago 5 years ago

GCJ Round 1C Virtual Contest

Errichto May/01/2021 19:05 Twitch 5 years ago 5 years ago

solving Servers from BOI 2021 in O(N*log(N))

Errichto Apr/29/2021 19:05 Twitch 5 years ago 5 years ago

CF Problem-Solving (difficulty 1600-2000)

Errichto Apr/27/2021 19:05 Twitch 5 years ago 5 years ago

Google Kickstart Round B Upsolving

Errichto Apr/20/2021 19:05 Twitch 5 years ago 5 years ago

GCJ Round 1A Upsolving

Errichto Apr/10/2021 19:05 Twitch 5 years ago 5 years ago

GCJ 2019 1C Practice

Errichto Apr/08/2021 19:10 Twitch 5 years ago 5 years ago

CF #712 (Div. 1) Virtual Participation

Errichto Apr/06/2021 19:00 Twitch 5 years ago 5 years ago

Polygon - creating Gaussian Elimination problems

Errichto Mar/30/2021 19:00 Twitch 5 years ago 5 years ago

CF #710 (div. 3) F G

Errichto Mar/27/2021 19:05 Twitch 5 years ago 5 years ago

Polygon - creating Gaussian Elimination problems

Errichto Mar/23/2021 19:05 Twitch 5 years ago 5 years ago

Codeforces Problem-Solving (difficulty 1500-2000)

Errichto Mar/20/2021 19:15 Twitch 5 years ago 5 years ago

CF Easy Problem-Solving (but first CF 705 F on HealthyUGs channel)

Errichto Mar/06/2021 21:00 Twitch 5 years ago 5 years ago

CF Global Round 13 upsolving

Errichto Mar/02/2021 19:45 Twitch 5 years ago 5 years ago

Google Hash Code Qual discussion

Errichto Feb/28/2021 19:45 Twitch 5 years ago 5 years ago

Google Hash Code warm-up

Errichto Feb/23/2021 19:00 Twitch 5 years ago 5 years ago

Codeforces Problem-Solving (difficulty 1600-2000)

Errichto Feb/20/2021 19:05 Twitch 5 years ago 5 years ago

Hard Atcoder Upsolving

Errichto Feb/16/2021 19:05 Twitch 5 years ago 5 years ago

CF 694-E Strange Permutation, K-th Lexicographical Sequence

Errichto Feb/09/2021 19:00 Twitch 5 years ago 5 years ago

Codeforces Problem-Solving (difficulty 1600-2000)

Errichto Feb/06/2021 19:00 Twitch 5 years ago 5 years ago

Easy Codeforces Problem-Solving

Errichto Jan/30/2021 19:05 Twitch 5 years ago 5 years ago

ICPC Swiss Subregional 2019 ft. Radewoosh

Errichto Jan/26/2021 18:00 Twitch 5 years ago 5 years ago

CSES Closest Pair Of Points

Errichto Jan/23/2021 19:00 Twitch 5 years ago 5 years ago

Hard Atcoder Upsolving, AGC 50 E

Errichto Jan/19/2021 19:00 Twitch 5 years ago 5 years ago

CSES Geometry Problems

Errichto Jan/16/2021 19:00 Twitch 5 years ago 5 years ago

(Hard) Atcoder Upsolving, AGC 50 D

Errichto Jan/12/2021 19:00 Twitch 5 years ago 5 years ago

Codeforces Problem-Solving (difficulty 1700-2200)

Errichto Jan/09/2021 19:00 Twitch 5 years ago 5 years ago

Round #694 Post-Contest Discussion

Errichto Jan/05/2021 19:40 Twitch 5 years ago 5 years ago

Easy Codeforces Problem-Solving

Errichto Jan/02/2021 19:00 Twitch 5 years ago 5 years ago

(Hard) Atcoder Upsolving, AGC 50

Errichto Dec/29/2020 19:00 Twitch 5 years ago 5 years ago

Round #691 Post-Contest Discussion ft. Endagorion (div2 only)

Errichto Dec/19/2020 15:00 Twitch 5 years ago 5 years ago

(Hard) Atcoder Upsolving, AGC 46

Errichto Dec/15/2020 19:00 Twitch 5 years ago 5 years ago

(Hard) Atcoder Grand Contest 49 E

Errichto Dec/08/2020 19:00 Twitch 5 years ago 5 years ago

(Hard) Atcoder Grand Contest 49

Errichto Dec/01/2020 20:00 Twitch 5 years ago 5 years ago

TCO20 Algorithm Finals

Errichto Nov/21/2020 20:00 Twitch 5 years ago 5 years ago

CodinGame Part 3.5 (BFS)

Errichto Nov/20/2020 19:00 Twitch 5 years ago 5 years ago

CodinGame Part 3

Errichto Nov/19/2020 19:00 Twitch 5 years ago 5 years ago

TCO20 Algorithm Semifinals 2

Errichto Nov/18/2020 18:00 Twitch 5 years ago 5 years ago

CodinGame Part 2 (DP)

Errichto Nov/15/2020 20:05 Twitch 6 years ago 6 years ago

Lockout Championship top8 commentary

Errichto Nov/14/2020 18:30 Twitch 6 years ago 6 years ago

TCO20 Algorithm Semifinals 1

Errichto Nov/13/2020 17:45 Twitch 6 years ago 6 years ago

CodinGame Fall Challenge 2020

Errichto Nov/12/2020 19:00 Twitch 6 years ago 6 years ago

Easy Codeforces Problem-Solving

Errichto Nov/07/2020 19:00 Twitch 6 years ago 6 years ago

Hard Atcoder Upsolving, AGC 35

Errichto Nov/03/2020 19:00 Twitch 6 years ago 6 years ago

Easy Codeforces Problem-Solving

Errichto Oct/31/2020 20:00 Twitch 6 years ago 6 years ago

Hard Atcoder Upsolving, AGC 48

Errichto Oct/27/2020 20:00 Twitch 6 years ago 6 years ago