Contest Name Start Time End Time Duration (Mins)
RI November Course 2024 Advanced Final Contest 19 Nov 2024 13:55 19 Nov 2024 18:55 300
RI November Course 2024 Elementary Final Contest 19 Nov 2024 13:55 19 Nov 2024 18:55 300
Contest Name Start Time End Time Duration (Mins)
Contest Name Start Time End Time Duration (Mins)
RI November Course 2024 Advanced Contest 4 (Classic Techniques) 15 Nov 2024 08:30 15 Nov 2024 11:30 180
RI November Course 2024 Elementary Contest 3 (Greedy, Binary Search + BSTA, Sliding Window) 14 Nov 2024 08:30 14 Nov 2024 11:30 180
RI November Course 2024 Advanced Contest 3 (DS II) 14 Nov 2024 08:30 14 Nov 2024 11:30 None
NYOI 2024 Final Round (Public Mirror) 11 Nov 2024 09:00 13 Nov 2024 13:00 240
RI November Course 2024 Advanced Contest 2 (DP II) 12 Nov 2024 08:40 12 Nov 2024 11:40 180
RI November Course 2024 Elementary Contest 2 (STL Data Structures) 12 Nov 2024 08:30 12 Nov 2024 11:30 180
NYOI 2024 Final Round 11 Nov 2024 09:00 11 Nov 2024 13:10 250
NYOI 2024 Practice Round 29 Oct 2024 13:00 10 Nov 2024 23:59 240
RI November Course 2024 Advanced Contest 1 (Graph Theory II, Trees I, Math) 08 Nov 2024 09:31 08 Nov 2024 12:31 180
RI November Course 2024 Elementary Contest 1 (Syntax) 08 Nov 2024 08:30 08 Nov 2024 11:30 180
Spooky Scary Problem 31 Oct 2024 00:00 07 Nov 2024 00:00 None
RI November Course 2024 Diagnostic Test 02 Nov 2024 08:00 05 Nov 2024 20:00 300
NASS CP Club Training Contest 1 19 Sep 2024 15:00 19 Sep 2024 17:30 None
AOI 2024 Day 2 Open Mirror 31 Jul 2024 15:40 07 Aug 2024 15:40 135
AOI 2024 Day 1 Open Mirror 29 Jul 2024 15:40 05 Aug 2024 23:40 135
SG IO Course Final Contest 03 Aug 2024 00:00 05 Aug 2024 00:00 120
VS mini contest 02 Aug 2024 14:50 02 Aug 2024 17:20 180
NAOI 2024 01 Aug 2024 15:30 01 Aug 2024 17:00 90
HCI EC³ Beginner Contest 2024 05 Jul 2024 14:40 05 Jul 2024 16:55 135
CPIC 2024 Final Contest 21 Jun 2024 12:30 21 Jun 2024 16:00 210
CPIC 2024 Practice Contest 1 19 Jun 2024 09:15 19 Jun 2024 11:15 120
Codebreaker Fundraiser Contest 2024 24 May 2024 20:00 02 Jun 2024 23:59 None
April Fools 2024 01 Apr 2024 00:00 07 Apr 2024 23:59 None
HCI (HS) 2024 Contest 1 14 Mar 2024 15:00 14 Mar 2024 18:00 180
YTIC CP Diag 16 Feb 2024 16:00 16 Feb 2024 17:00 60
RICP Diagnostic Contest 19 Jan 2024 13:35 19 Jan 2024 15:30 105
Hello 2024 01 Jan 2024 00:00 07 Jan 2024 23:59 None
December Course 2023 Advanced Final Contest 30 Dec 2023 12:40 30 Dec 2023 17:40 300
December Course 2023 Elementary Final Contest 30 Dec 2023 12:30 30 Dec 2023 17:30 300
Dec Course 2023 Elementary Contest 9 (DP II) 27 Dec 2023 09:00 27 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 9 (DP IV) 27 Dec 2023 09:00 27 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 8 (Trees III) 23 Dec 2023 09:00 23 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 8 (Recursion + DP I) 23 Dec 2023 09:00 23 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 7 (Trees II) 20 Dec 2023 09:00 20 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 7 (DS II) 20 Dec 2023 09:00 20 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 6 (DP III) 18 Dec 2023 09:00 18 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 6 (Greedy) 18 Dec 2023 09:00 18 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 5 (Trees I) 16 Dec 2023 09:00 16 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 5 (Complete Search, Binary Search) 16 Dec 2023 09:00 16 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 4 (DP II) 13 Dec 2023 09:00 13 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 4 (DS I) 13 Dec 2023 09:00 13 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 3 (DS III) 11 Dec 2023 09:00 11 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 3 (STL, Precomputation) 11 Dec 2023 09:00 11 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 2 (Big O Notation, Algorithmic Thinking, Sorting) 09 Dec 2023 09:00 09 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 2 (Greedy) 09 Dec 2023 09:00 09 Dec 2023 12:00 180
Dec Course 2023 Advanced Contest 1 (Classic Techniques and DS II) 06 Dec 2023 09:00 06 Dec 2023 12:00 180
Dec Course 2023 Elementary Contest 1 (Syntax) 06 Dec 2023 09:00 06 Dec 2023 12:00 180
Dec Course 2023 Selection Test 02 Dec 2023 13:00 02 Dec 2023 18:00 300
December Course Mock Selection Test 2023 11 Nov 2023 11:11 02 Dec 2023 09:00 300
Testing 23 Nov 2023 07:00 29 Nov 2023 08:00 1000
HCI November Final Contest 2023 27 Nov 2023 13:14 27 Nov 2023 18:14 300
RI Novcourse Final Contest 2023 20 Nov 2023 09:20 25 Nov 2023 23:59 180
Novcourse 2023 Day 1 Contest 08 Nov 2023 13:00 08 Nov 2023 16:00 None
HCI NOI Training 2023 Advanced 1 08 Nov 2023 09:45 08 Nov 2023 12:30 None
AOI 2023 Day 2 21 Aug 2023 15:50 21 Aug 2023 17:50 120
AOI 2023 Day 1 14 Aug 2023 15:50 14 Aug 2023 17:50 120
HCI EC³ Beginner Contest 05 May 2023 14:30 05 May 2023 17:05 155
April Fools 2023 04 Jan 2023 00:00 14 Apr 2023 23:59 None
ANDSS Coding Head Selection Duel 03 Apr 2023 16:15 03 Apr 2023 18:00 90
Valentine's Day Contest 2023 14 Feb 2023 00:00 21 Feb 2023 23:59 None
RI Grab Fest 2023 (Part B) 17 Feb 2023 13:30 17 Feb 2023 16:30 60
RI Grab Fest 2023 10 Feb 2023 13:30 10 Feb 2023 16:00 90
ANDSS Welcome 2023 Day 2 27 Jan 2023 14:00 27 Jan 2023 18:00 240
ANDSS Welcome 2023 Day 1 18 Jan 2023 16:20 18 Jan 2023 17:50 90
Hello 2023 02 Jan 2023 19:45 02 Jan 2023 23:00 None
Dec Course 2022 BAPS 28 Dec 2022 12:00 28 Dec 2022 17:00 300
Dec Course 2022 Contest 9e 27 Dec 2022 09:00 27 Dec 2022 12:00 None
Dec Course 2022 Contest 9 (DP IV) 27 Dec 2022 09:00 27 Dec 2022 12:00 None
Dec Course 2022 Contest 8 (Trees III) 21 Dec 2022 09:00 21 Dec 2022 12:00 180
Dec Course 2022 Contest 8e 21 Dec 2022 09:00 21 Dec 2022 12:00 None
Dec Course 2022 Contest 7 (Trees II) 19 Dec 2022 09:05 19 Dec 2022 12:05 None
Dec Course 2022 Contest 6 (DP III) 17 Dec 2022 09:10 17 Dec 2022 12:10 180
Dec Course 2022 Contest 5 (Trees I) 14 Dec 2022 09:00 14 Dec 2022 12:00 180
Dec Course 2022 Contest 4 (DP II) 12 Dec 2022 09:00 12 Dec 2022 12:00 180
Dec Course 2022 Contest 3 (DS III) 10 Dec 2022 09:00 10 Dec 2022 12:00 None
Dec Course 2022 Contest 2 (Greedy) 07 Dec 2022 09:12 07 Dec 2022 12:12 None
Dec Course 2022 Contest 1 (Classic Techniques + DS II) 05 Dec 2022 09:00 05 Dec 2022 12:00 None
2022 December Course Diagnostic Test (30 Nov) 30 Nov 2022 14:15 30 Nov 2022 17:50 None
RI November Course 2022 Day 2 (Contest) 10 Nov 2022 14:20 10 Nov 2022 15:50 90
EGOI Training '22 Contest 5 08 Oct 2022 08:00 10 Oct 2022 08:00 300
EGOI Training '22 Contest 3 24 Sep 2022 08:00 26 Sep 2022 08:00 300
EGOI Training '22 Contest 2 17 Sep 2022 08:00 19 Sep 2022 08:00 300
EGOI Training '22 Contest 1 10 Sep 2022 08:00 12 Sep 2022 08:00 300
IOI Training '22 Random Contest 7.1 04 Aug 2022 20:00 05 Aug 2022 01:00 300
IOI Training '22 Random Contest 7 04 Aug 2022 13:00 04 Aug 2022 18:00 300
IOI Training '22 Random Contest 6 01 Aug 2022 13:00 01 Aug 2022 18:00 300
HCI EC³ Final Contest 29 Jul 2022 14:30 29 Jul 2022 17:30 180
IOI Training '22 Random Contest 5 27 Jul 2022 13:00 27 Jul 2022 18:00 300
IOI Training '22 Random Contest 4 25 Jul 2022 13:00 25 Jul 2022 18:00 300
IOI Training '22 Random Contest 3 23 Jul 2022 13:00 23 Jul 2022 18:15 315
IOI Training '22 Random Contest 2 20 Jul 2022 13:00 20 Jul 2022 18:00 300
IOI Training '22 Random Contest 1 18 Jul 2022 13:00 18 Jul 2022 18:00 300
IOI Training '22 Contest 15 13 Jul 2022 13:20 13 Jul 2022 18:20 300
IOI Training '22 Contest 13 06 Jul 2022 13:10 06 Jul 2022 18:10 300
IOI Training '22 Contest 12 04 Jul 2022 12:45 04 Jul 2022 17:45 300
IOI Training '22 Contest 11 02 Jul 2022 13:00 02 Jul 2022 18:00 300
IOI Training '22 Contest 10 29 Jun 2022 12:45 29 Jun 2022 17:45 300
IOI Training '22 Contest 9 27 Jun 2022 13:00 27 Jun 2022 18:00 300
IOI Training '22 Contest 8 25 Jun 2022 13:00 25 Jun 2022 18:00 300
IOI Training '22 Contest 7 22 Jun 2022 13:15 22 Jun 2022 18:15 300
IOI Training '22 Contest 6 18 Jun 2022 13:00 18 Jun 2022 18:00 300
IOI Training '22 Contest 5 13 Jun 2022 12:30 13 Jun 2022 17:30 300
IOI Training '22 Contest 4 10 Jun 2022 12:30 10 Jun 2022 17:30 300
IOI Training '22 Contest 3 08 Jun 2022 13:00 08 Jun 2022 18:00 None
IOI Training '22 Contest 2 06 Jun 2022 13:00 06 Jun 2022 18:00 None
IOI Training '22 Contest 1 04 Jun 2022 14:00 04 Jun 2022 18:00 None
Educational Round 11 23 Apr 2022 00:00 07 May 2022 23:59 None
April Fools' 2022 01 Apr 2022 15:00 03 Apr 2022 23:59 None
Valentine's Day Contest 2022 14 Feb 2022 00:00 06 Mar 2022 23:59 None
Educational Round 10 (Goodbye cstuart and kai824) 02 Jan 2022 00:30 12 Jan 2022 23:59 None
Hello 2022 01 Jan 2022 00:00 07 Jan 2022 23:59 None
Dec Course 2021 Elementary Final Contest 29 Dec 2021 13:00 29 Dec 2021 18:00 300
Dec Course 2021 BAPS 29 Dec 2021 13:00 29 Dec 2021 18:00 300
Dec Course 2021 Intermediate Contest 9 (Dynamic Programming IV) 27 Dec 2021 10:00 27 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 10 (Graph Theory Basics) 27 Dec 2021 10:00 27 Dec 2021 12:00 120
Contest Mode Testing B 23 Dec 2021 13:00 23 Dec 2021 18:00 300
Dec Course 2021 Intermediate Contest 8 (Trees II) 22 Dec 2021 10:00 22 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 9 (DP II) 22 Dec 2021 10:00 22 Dec 2021 12:00 120
Dec Course 2021 Intermediate Contest 7 (Dynamic Programming III) 20 Dec 2021 10:00 20 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 8 (DP I) 20 Dec 2021 10:00 20 Dec 2021 12:00 120
Dec Course 2021 Intermediate Contest 6 (Trees I) 18 Dec 2021 10:00 18 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 7 (DS II) 18 Dec 2021 10:00 18 Dec 2021 12:00 120
Dec Course 2021 Intermediate Contest 5 (Dynamic Programming II) 15 Dec 2021 10:00 15 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 6 (Greedy) 15 Dec 2021 10:00 15 Dec 2021 12:00 120
Dec Course 2021 Intermediate Contest 4 (Data Structures III) 13 Dec 2021 10:00 13 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 5 (Complete Search & Binary Search) 13 Dec 2021 10:00 13 Dec 2021 12:00 120
Dec Course 2021 Intermediate Contest 3 (Greedy Algorithms) 11 Dec 2021 10:00 11 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 4 (DS I) 11 Dec 2021 10:00 11 Dec 2021 12:00 120
Dec Course 2021 Intermediate Contest 2 (Data Structures II) 08 Dec 2021 10:00 08 Dec 2021 13:00 180
Dec Course 2021 Elementary Contest 3 (STL Functions and Precomputation) 08 Dec 2021 10:00 08 Dec 2021 12:00 120
Testing Contest 2 06 Dec 2021 15:14 06 Dec 2021 15:25 None
Dec Course 2021 Intermediate Contest 1 (Classic Techniques) 06 Dec 2021 10:00 06 Dec 2021 13:00 180
Dec Course 2021 Diagnostic Test 01 Dec 2021 10:00 01 Dec 2021 13:00 180
Educational Round 9 (Goodbye 0rang3) 11 Nov 2021 12:00 30 Nov 2021 23:59 None
Educational Round 8 (Goodbye oolimry) 09 Oct 2021 00:00 31 Oct 2021 23:59 None
NJ SH Training Contest 2 (Greedy) 31 Oct 2021 13:00 31 Oct 2021 16:10 180
NJ SH Training Contest 1 (Shortest Path) 24 Oct 2021 13:00 24 Oct 2021 15:10 120
NUSH IOT II Test 2 2021 09 Oct 2021 14:20 11 Oct 2021 00:00 90
Educational Round 7 28 Aug 2021 00:00 12 Sep 2021 23:59 None
NUSH IOT II Test 1 2021 21 Aug 2021 14:20 23 Aug 2021 00:00 90
Educational Round 6B 08 Aug 2021 20:00 22 Aug 2021 20:00 None
Educational Round 6A 08 Aug 2021 20:00 22 Aug 2021 20:00 None
Educational Round 5 22 Jul 2021 00:00 30 Jul 2021 23:59 None
RI CSS Contest 1 14 Jul 2021 09:00 21 Jul 2021 09:00 None
Testing Subtasks 30 Jun 2021 00:00 01 Jul 2021 23:59 None
Educational Round 4 12 Jun 2021 00:00 26 Jun 2021 00:00 None
SGP Sparring 2021 18 Jun 2021 18:00 18 Jun 2021 23:31 300
Educational Round 3 22 Apr 2021 00:00 02 May 2021 23:59 None
April Fools 2021 (Dedicated to Jamez the Alien) 01 Apr 2021 00:00 07 Apr 2021 23:59 None
Valentines Contest 2021 (dedicated to Shiwei) 14 Feb 2021 00:00 21 Feb 2021 00:00 None
Hello 2021 01 Jan 2021 00:00 07 Jan 2021 23:59 None
Educational Round 2 (メリー クリスマス) 24 Dec 2020 16:00 31 Dec 2020 23:59 None
Dec Course 2020 BAPS 28 Dec 2020 12:30 28 Dec 2020 17:30 None
Dec Course 2020 Contest 11 (Trees 2) 26 Dec 2020 10:00 26 Dec 2020 13:00 None
Dec Course 2020 Contest 10 (Trees 1) 23 Dec 2020 10:00 23 Dec 2020 13:00 None
Dec Course 2020 Contest 9 (DP II) 21 Dec 2020 10:00 21 Dec 2020 13:00 None
Dec Course 2020 Contest 8 (Greedy) 19 Dec 2020 10:00 19 Dec 2020 13:00 None
Dec Course 2020 Contest 7 (Classic Techniques) 16 Dec 2020 10:00 16 Dec 2020 13:00 None
Dec Course 2020 Contest 6 (DS II) 14 Dec 2020 10:00 14 Dec 2020 13:00 None
Dec Course 2020 Contest 5 (DS I) 12 Dec 2020 10:00 12 Dec 2020 13:00 None
Dec Course 2020 Contest 4 (GT I) 09 Dec 2020 10:00 09 Dec 2020 13:00 None
Dec Course 2020 Contest 3 (DP I) 07 Dec 2020 10:00 07 Dec 2020 13:00 None
Educational Round 1 (Goodbye Benson) 30 Nov 2020 00:00 06 Dec 2020 23:59 None
Dec Course 2020 Contest 2 (STL & math) 05 Dec 2020 10:00 05 Dec 2020 13:00 None
Dec Course 2020 Contest 1 (Intro) 02 Dec 2020 10:00 02 Dec 2020 13:00 180
Contest Name Start Time End Time Duration (Mins)
ACJC Training Contest 19 Nov 2024 12:59 None 180
APIO 2015 09 May 2015 13:00 None 300
APIO 2016 07 May 2016 12:00 None 300
APIO 2017 29 May 2017 13:00 None 300
APIO 2018 15 Oct 2021 14:24 None 300
APIO 2019 18 May 2019 00:00 None 300
APIO 2020 02 Apr 2021 00:00 None 300
APIO 2021 23 May 2021 00:00 None 300
APIO 2022 28 May 2022 13:00 None 300
APIO 2023 06 Jun 2023 18:33 None 300
APIO 2024 17 May 2024 00:00 None 300
ASEAN Sparring 2022 15 Jun 2022 14:00 None 300
Combined NOI Selection 2021 Round 1 17 Jan 2021 00:00 None 300
Combined NOI Selection 2021 Round 2 24 Jan 2021 00:00 None 300
DDC 2023 Final Contest 29 Dec 2023 12:40 None 300
December Course 2018 Advanced Final Contest 02 Feb 2022 00:00 None 300
December Course 2018 Elementary Final Contest 11 Jan 2023 00:00 None 300
December Course 2019 Advanced Final Contest 19 Sep 2021 10:14 None 300
HCI December Course Selection 2021 27 Nov 2021 13:00 None 300
HCI NOI Selection Retest 2020 01 Jan 2020 00:00 None 300
HCI NOI Selection Test 2017 15 Mar 2022 22:00 None 300
HCI-NUSH NOI Selection 2022 15 Jan 2022 13:00 None 300
HCI-RI 2020 May Contest 01 May 2020 00:00 None 180
IOI 2013 (Day 2) 01 Jan 2013 00:00 None 300
IOI 2018 (Day 1) 01 Jan 2018 00:00 None 300
IOI 2018 (Day 2) 01 Jan 2018 00:00 None 300
IOI 2019 (Day 1) 30 Jan 2022 00:00 None 300
IOI 2020 (Day 1) 01 Jan 2020 00:00 None 300
IOI 2020 (Day 2) 01 Jan 2020 00:00 None 300
IOI 2021 (Day 1) 23 Jun 2021 16:14 None 300
IOI 2021 (Day 2) 26 Jun 2021 09:50 None 300
IOI 2022 (Day 1) 05 Sep 2022 21:55 None 300
IOI 2022 (Day 2) 05 Sep 2022 21:58 None 300
IOI 2023 (Day 1) 15 May 2024 21:54 None 300
IOI 2023 (Day 2) 15 May 2024 21:56 None 300
NOI 2012 14 Oct 2021 00:59 None 300
NOI 2013 14 Oct 2021 00:37 None 300
NOI 2014 14 Oct 2021 00:13 None 300
NOI 2015 21 Jun 2021 13:15 None 300
NOI 2016 12 May 2021 11:37 None 300
NOI 2017 15 Nov 2020 23:00 None 300
NOI 2018 01 Apr 2021 00:00 None 300
NOI 2018 Preliminary Contest 13 Oct 2021 17:39 None 180
NOI 2019 01 Apr 2021 00:00 None 300
NOI 2019 Preliminary Contest 24 Sep 2021 14:09 None 240
NOI 2020 Finals 27 Mar 2021 00:00 None 300
NOI 2020 Preliminary Contest 28 Mar 2021 00:00 None 180
NOI 2020 Qualification Contest 15 Nov 2020 23:00 None 240
NOI 2021 Finals 15 Nov 2020 23:00 None 300
NOI 2021 Qualification Contest 20 Feb 2021 17:00 None 180
NOI 2022 Finals 19 Mar 2022 13:00 None 300
NOI 2022 Qualification Contest 19 Feb 2022 14:59 None 180
NOI 2023 Finals 18 Mar 2023 21:00 None 300
NOI 2023 Qualification Contest 20 Feb 2023 15:32 None 300
NOI 2024 Finals 18 Mar 2024 20:49 None 300
NOI Qualification Contest 2024 27 Feb 2024 16:24 None 300
NUSH ISC 2018 01 Jan 2018 00:00 None 300
NUSH ISC 2020 21 Nov 2020 19:00 None 300
NUSH ISC 2021 13 Sep 2021 20:45 None 300
RGCoders Novcourse 2024: Timed Practice 17 Nov 2024 08:00 None 150
RI December Course Selection 2018 30 Nov 2018 00:00 None 300
RI December Course Selection Test 2021 22 Nov 2021 13:00 None 300
RI NOI Selection Test 2017 15 Mar 2022 13:00 None 300
RI November Course Stage 2 Selection Test 2019 08 Nov 2019 14:00 None 300
RI November Course Stage 2 Selection Test 2020 15 Nov 2020 16:21 None 300
RI November Course Stage 2 Selection Test 2021 05 Nov 2021 13:30 None 180
RI November Course Stage 2 Selection Test 2022 14 Nov 2022 13:00 None 300
RI-HCI December Course Selection 2019 19 Oct 2021 23:16 None 300
RI-HCI December Course Selection 2020 26 Nov 2020 00:00 None 300
RI-HCI Final Contest 2022 28 Nov 2022 13:10 None 300
RI-HCI NOI Selection Test 2018 14 Mar 2022 09:00 None 300
RI-HCI NOI Selection Test 2019 21 Oct 2021 23:21 None 300
RI-HCI NOI Selection Test 2020 28 Mar 2021 00:00 None 300
RI/RJC NOI Selection Test 2016 16 Mar 2022 19:00 None 300
RSA Fun Contest 15 Jun 2021 01:23 None 300
USACO 2021 February Contest, Platinum 01 Feb 2021 00:00 None 300
UWCOI 2020 31 Mar 2021 00:00 None 240
Contest Name Start Time End Time Duration (Mins)
HCI NOI Training 2024 Practice 5 (Recursion + DP) 18 Nov 2024 09:06 None None
RI November Course Elementary Practice 5 (Graph Theory I) 17 Nov 2024 22:30 None None
RI November Course 2024 Advanced Practice 5 (Trees) 15 Nov 2024 15:55 None None
HCI NOI Training 2024 Practice 4 (Sliding Window + Greedy) 15 Nov 2024 09:32 None None
RI November Course 2024 Advanced Practice 4 (Classic Techniques) 14 Nov 2024 19:50 None None
RI November Course 2024 Elementary Practice 4 (Dynamic Programming I) 14 Nov 2024 18:33 None None
HCI NOI Training 2024 Practice 3 (DS 2, Algo 1) 13 Nov 2024 09:02 None None
RI November Course 2024 Advanced Practice 3 (Data Structures II) 12 Nov 2024 19:46 None None
RI November Course 2024 Elementary Practice 3 (Greedy, Binary Search, Sliding Window) 12 Nov 2024 15:33 None None
HCI NOI Training 2024 Practice 2 (Syntax 2, DS 1) 11 Nov 2024 00:03 None None
RI November Course 2024 Advanced Practice 2 (Dynamic Programming II) 09 Nov 2024 00:10 None None
RI November Course 2024 Elementary Practice 2 (STL Data Structures) 09 Nov 2024 00:02 None None
HCI NOI Training 2024 Practice 1 (Syntax) 08 Nov 2024 00:48 None None
RI November Course 2024 Advanced Practice 1B (Math) 07 Nov 2024 22:30 None None
RI November Course 2024 Advanced Practice 1A (Graph Theory II + Trees I) 07 Nov 2024 14:46 None None
RI November Course 2024 Elementary Practice 1 (Syntax) 07 Nov 2024 12:10 None None
Shor's SG Collection - 7 Star 30 Oct 2024 22:59 None None
Shor's SG Collection - 6 Star 30 Oct 2024 22:59 None None
Shor's SG Collection - 5 Star 30 Oct 2024 22:59 None None
Shor's SG Collection - 4 Star 30 Oct 2024 22:59 None None
Shor's SG Collection - 3 Star 30 Oct 2024 22:58 None None
Shor's SG Collection - 2 Star 30 Oct 2024 22:58 None None
Shor's SG Collection - 1 Star 30 Oct 2024 22:57 None None
Shor's SG Collection - 0 Star 30 Oct 2024 22:56 None None
HCI Graph Practice Contest 28 Jun 2024 16:22 None None
CPIC 2024 Practice 5 (Greedy) 18 Jun 2024 07:15 None None
CPIC 2024 Practice 4A (Brute Force) 18 Jun 2024 07:10 None None
CPIC Practice 2B (Advanced Data Structures) 18 Jun 2024 07:05 None None
CPIC Practice 3 (Sorting and Searching) 18 Jun 2024 07:00 None None
CPIC Practice 2A (Basic Data Structures) 18 Jun 2024 06:55 None None
CPIC Practice 1 (Syntax) 18 Jun 2024 06:50 None None
RGS "Practice": ??? 06 Jun 2024 21:48 None None
set 3 24 May 2024 15:45 None None
RGS Practice: Binary Search and BSTA 16 May 2024 00:00 None None
RGS Practice: Greedy 16 May 2024 00:00 None None
RGS Practice: Data Structures I 16 May 2024 00:00 None None
NYCP Practice 1_Syntax&Adhoc 15 May 2024 12:00 None None
RGS Practice: Syntax 29 Jan 2024 14:00 None None
KM Codequest: CP Primer 16 Jan 2024 21:02 None None
Dec Course 2023 Advanced Practice 10 (Connectivity) 27 Dec 2023 14:00 None None
Dec Course 2023 Elementary Practice 10 (Graph Theory) 27 Dec 2023 13:00 None None
Dec Course 2023 Elementary Practice 9 (DP II) 23 Dec 2023 14:25 None None
Dec Course 2023 Advanced Practice 9 (DP IV) 23 Dec 2023 13:00 None None
Dec Course 2023 Elementary Practice 8 (Recursion + DP I) 20 Dec 2023 14:26 None None
Dec Course 2023 Advanced Practice 8 (Trees III) 20 Dec 2023 14:00 None None
Dec Course 2023 Elementary Practice 7 (DS II) 18 Dec 2023 14:07 None None
Dec Course 2023 Advanced Practice 7 (Trees II) 18 Dec 2023 13:23 None None
Dec Course 2023 Advanced Practice 6 (DP III) 16 Dec 2023 15:33 None None
Dec Course 2023 Elementary Practice 6 (Greedy) 16 Dec 2023 14:00 None None
Dec Course 2023 Advanced Practice 5 (Trees I) 13 Dec 2023 13:00 None None
Dec Course 2023 Elementary Practice 5 (Complete Search, Binary Search) 13 Dec 2023 09:00 None None
Dec Course 2023 Advanced Practice 4 (DP II) 11 Dec 2023 14:37 None None
Dec Course 2023 Elementary Practice 4 (DS I) 11 Dec 2023 14:01 None None
Dec Course 2023 Advanced Practice 3 (DS III) 09 Dec 2023 14:30 None None
Dec Course 2023 Elementary Practice 3 (STL, Precomputation) 09 Dec 2023 14:30 None None
Dec Course 2023 Elementary Practice 2 (Big O Notation, Algorithmic thinking, Sorting) 06 Dec 2023 14:40 None None
Dec Course 2023 Advanced Practice 2 (Greedy) 06 Dec 2023 14:28 None None
Dec Course 2023 Advanced Practice 1B (DS II) 04 Dec 2023 09:00 None None
Dec Course 2023 Advanced Practice 1A (Classic Techniques) 04 Dec 2023 09:00 None None
Dec Course 2023 Elementary Practice 1 (Syntax) 04 Dec 2023 09:00 None None
Weeb References Problemset 🤡 01 Dec 2023 00:00 None None
Kpop References Problemset 🤡 01 Dec 2023 00:00 None None
HCI NOI Training 2023 Practice 8 (DP 2) 24 Nov 2023 09:12 None None
HCI NOI Training 2023 Practice 7 (DP 1) 22 Nov 2023 09:36 None None
HCI NOI Training 2023 Practice 6 (Graph Theory 2) 20 Nov 2023 09:00 None None
Novcourse 2023 Day 5 Problems 17 Nov 2023 09:00 None None
HCI NOI Training 2023 Practice 5 (Graph Theory 1) 17 Nov 2023 09:00 None None
Novcourse 2023 Day 4 Problems 15 Nov 2023 09:00 None None
HCI NOI Training 2023 Practice 4 (Sliding Window + Greedy) 15 Nov 2023 08:53 None None
Novcourse beginner recap (RGS) 14 Nov 2023 23:55 None None
HCI NOI Training 2023 Practice 3 (DS 2 + Algo 1) 14 Nov 2023 09:08 None None
HCI NOI Training 2023 Practice 2 (Syntax 2 + DS 1) 10 Nov 2023 09:00 None None
Novcourse 2023 Day 3 Problems 10 Nov 2023 09:00 None None
Novcourse 2023 Day 2 Problems 09 Nov 2023 09:00 None None
HCI NOI Training 2023 Practice 1 (Syntax) 08 Nov 2023 09:00 None None
Novcourse 2023 Day 1 Problems 08 Nov 2023 09:00 None None
HCI EC³ Training GT 1 11 Jul 2023 21:54 None None
HCI EC³ Training DP 2 07 Jul 2023 14:37 None None
HCI EC³ Training DP 1 30 Jun 2023 14:35 None None
HCI EC³ Training DS 1 16 Apr 2023 15:01 None None
ANDSS Practice 2 (Syntax 2) 05 Jan 2023 01:43 None None
ANDSS Practice 1 (Syntax 1) 05 Jan 2023 01:09 None None
Dec Course 2022 Practice 11 (Connectivity) 27 Dec 2022 13:00 None None
Dec Course 2022 Practice 10 (DP IV) 21 Dec 2022 13:00 None None
Dec Course 2022 Practice 9 (Trees III) 19 Dec 2022 13:00 None None
Dec Course 2022 Practice 8 (Trees II) 17 Dec 2022 14:10 None None
Dec Course 2022 Practice 7 (DP III) 14 Dec 2022 13:00 None None
Dec Course 2022 Practice 6 (Trees I) 12 Dec 2022 13:00 None None
Dec Course 2022 Practice 5 (DP II) 10 Dec 2022 13:00 None None
Dec Course 2022 Practice 4 (DS III) 07 Dec 2022 13:00 None None
Dec Course 2022 Practice 3 (Greedy) 05 Dec 2022 13:00 None None
Dec Course 2022 Practice 2 (DS II) 03 Dec 2022 13:00 None None
Dec Course 2022 Practice 1 (Classic Techniques) 03 Dec 2022 09:00 None None
HCI NOI Training 2022 Practice 8 (Dynamic Programming 2) 25 Nov 2022 09:00 None None
HCI NOI Training 2022 Practice 7 (Dynamic Programming 1) 23 Nov 2022 09:00 None None
RI November Course 2022 Day 7 21 Nov 2022 08:00 None None
HCI NOI Training 2022 Practice 6 (Graph Theory 2) 21 Nov 2022 00:09 None None
RI November Course 2022 Day 6 18 Nov 2022 09:00 None None
HCI NOI Training 2022 Practice 5 (Graph Theory 1) 18 Nov 2022 09:00 None None
Dec Course 2022 Prereq (Graph Theory II) 17 Nov 2022 03:45 None None
Dec Course 2022 Prereq (Graph Theory I) 17 Nov 2022 03:45 None None
Dec Course 2022 Prereq (Dynamic Programming) 17 Nov 2022 03:45 None None
Dec Course 2022 Prereq (STL Data Structures) 17 Nov 2022 03:44 None None
Dec Course 2022 Prereq (Basics) 17 Nov 2022 03:44 None None
Dec Course 2022 Prereq (Introduction) 17 Nov 2022 03:36 None None
Dec Course 2022 Prereq (Essentials) 17 Nov 2022 03:30 None None
RI November Course 2022 Day 5 16 Nov 2022 09:00 None None
HCI NOI Training 2022 Practice 4 (Sliding Window, Greedy) 16 Nov 2022 09:23 None None
HCI NOI Training 2022 Practice 3 (DS 2, BSTA) 14 Nov 2022 00:09 None None
RI November Course 2022 Day 3 11 Nov 2022 11:00 None None
HCI NOI Training 2022 Practice 2 (Syntax, DS 1) 11 Nov 2022 09:00 None None
RI November Course 2022 Day 2 10 Nov 2022 09:00 None None
HCI NOI Training 2022 Practice 1 (Syntax) 09 Nov 2022 09:00 None None
RI November Course 2022 Day 1 08 Nov 2022 16:00 None None
Codebreaker Practice Contest 10 Jun 2022 19:02 None None
HCI IRSCP Group B Trees Practice 15 Mar 2022 20:33 None None
RI CSS Contest 2 19 Jan 2022 09:39 None None
RI CP Random Contest 12 Jan 2022 21:23 None None
RI CSS Contest 11 Jan 2022 08:55 None None
Analysis Mode Mirror 01 Jan 2022 00:00 None None
Dec Course 2021 Intermediate Practice 10 (Square Root Decomposition) 27 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 11 (Subtasks & Complete Search) 27 Dec 2021 14:00 None None
Dec Course 2021 Intermediate Practice 9 (DP IV) 22 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 10 (Graph Theory Basics) 22 Dec 2021 14:00 None None
Dec Course 2021 Intermediate Practice 8 (Trees II) 20 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 9 (DP II) 20 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 8 (DP I) 18 Dec 2021 14:00 None None
Dec Course 2021 Intermediate Practice 7 (DP III) 18 Dec 2021 14:00 None None
Dec Course 2021 Intermediate Practice 6 (Trees I) 15 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 7 (DS II) 15 Dec 2021 14:00 None None
Dec Course 2021 Intermediate Practice 5 (DP II) 13 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 6 (Greedy) 13 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 5 (Complete Search & Binary Search) 11 Dec 2021 14:00 None None
Dec Course 2021 Intermediate Practice 4 (DS III) 08 Dec 2021 15:00 None None
Dec Course 2021 Intermediate Practice 3 (Greedy) 08 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 4 (DS I) 08 Dec 2021 14:00 None None
Dec Course 2021 Intermediate Practice 2 (DS II) 06 Dec 2021 14:00 None None
Dec Course 2021 Elementary Practice 3 (STL + Precomputation) 06 Dec 2021 13:30 None None
Dec Course 2021 Intermediate Practice 1 (Classic Techniques) 04 Dec 2021 14:30 None None
Dec Course 2021 Elementary Practice 2 (Sorting and Algorithmic Thinking) 04 Dec 2021 13:30 None None
Dec Course 2021 Elementary Practice 1 (Syntax) 01 Dec 2021 14:00 None None
Dec Course 2021 Prereq (DP I) 01 Dec 2021 13:00 None None
Dec Course 2021 Prereq (Math) 01 Dec 2021 13:00 None None
Dec Course 2021 Prereq (STL) 01 Dec 2021 13:00 None None
Dec Course 2021 Prereq (GT) 01 Dec 2021 13:00 None None
HCI NOI Training 2021 Practice 8 (DS 3) 24 Nov 2021 09:00 None None
HCI NOI Training 2021 Practice 7 (DP II) 22 Nov 2021 09:06 None None
HCI NOI Training 2021 Practice 5 (DP 1) 17 Nov 2021 09:00 None None
HCI NOI Training 2021 Practice 6 (Graph Theory 2) 17 Nov 2021 09:00 None None
HCI NOI Training 2021 Adv Practice 4 (Tree Tricks) 15 Nov 2021 14:00 None None
HCI NOI Training 2021 Practice 4 (Graph Theory 1) 15 Nov 2021 09:00 None None
HCI NOI Training 2021 Practice 3 (DS & Algo 3) 13 Nov 2021 09:00 None None
RI November Training Practice 7 (Fenwick / Segment Trees + Applications) 12 Nov 2021 09:00 None None
RI November Training Practice 6 (Math) 10 Nov 2021 10:21 None None
RI November Training Practice 5 (Trees) 10 Nov 2021 09:00 None None
HCI NOI Training 2021 Practice 2 (DS & Algo 1) 10 Nov 2021 09:00 None None
HCI NOI Training 2021 Practice 1 (Syntax) 08 Nov 2021 09:00 None None
HCI NOI Training 2021 Adv Practice 1 (DS DP) 08 Nov 2021 09:00 None None
RI November Training Practice 4 (Graph Theory 1) 08 Nov 2021 09:00 None None
HCI NOI Training 2021 Adv Self Diagnostic 06 Nov 2021 00:23 None None
RI November Training Practice 3 (DP2) 05 Nov 2021 10:38 None None
RI November Training Practice 2B (DP) 03 Nov 2021 00:00 None None
RI November Training Practice 2A (Greedy & Binary Search) 02 Nov 2021 00:00 None None
RI November Training Practice 1 (Syntax & DS) 01 Nov 2021 10:10 None None
DNC Practice Problems 18 Oct 2021 20:49 None None
FFT Practice Problems 17 Oct 2021 15:17 None None
Treap Practice Problems 18 Jun 2021 16:55 None None
Convex Hull Speedup Practice Problems 18 Jun 2021 16:48 None None
Square Root Decomposition Practice Problems 18 Jun 2021 16:36 None None
Slope Trick Practice Problems 18 Jun 2021 16:32 None None
Dec Course 2020 Practice 11 (DP III) 26 Dec 2020 14:00 None None
Dec Course 2020 Practice 10 (Trees 2) 23 Dec 2020 14:00 None None
Dec Course 2020 Practice 9 (Trees 1) 21 Dec 2020 14:00 None None
Dec Course 2020 Practice 8 (DP II) 19 Dec 2020 14:00 None None
Dec Course 2020 Practice 7 (Greedy) 16 Dec 2020 14:00 None None
Dec Course 2020 Practice 6 (Classic Tech) 14 Dec 2020 14:00 None None
Dec Course 2020 Practice 5 (DS II) 09 Dec 2020 14:00 None None
Dec Course 2020 Practice 4 (DS I) 09 Dec 2020 14:00 None None
Dec Course 2020 Practice 3 (GT I) 07 Dec 2020 14:00 None None
Dec Course 2020 Practice 2 (DP I) 05 Dec 2020 14:00 None None
Dec Course 2020 Practice 1 (STL) 02 Dec 2020 14:30 None None
Starter Problems 28 Nov 2020 14:30 None None
Group Name
Asia-Pacific Informatics Olympiad
Codebreaker Educational Rounds
Dec Course Materials
Fun Contests
International Olympiad in Informatics
National Olympiad in Informatics (Singapore)
National Olympiad in Informatics School Selection Contests
Shor's SG Collection
Singapore Schools NOI Internal Training
Topical Practice Problems