Welcome all!
This is Lim family's blog. That's all, we've got nothing else to say.
Wednesday 24 July 2024
Saturday 20 July 2024
Sunday 14 July 2024
Wednesday 10 July 2024
Sunday 7 July 2024
SIMO Retiree Blog
SIMO Retiree Blog
Recent posts:
Musings about the IMO - July 06, 2024, by Dylan Toh
SMO Open 2024 ??% Speedrun - June 29, 2024, by Glen Lim
Connecting problems - June 29, 2024, by Gabriel Goh
Some CTST rewrites - June 24, 2024, by David Lin
Reim - June 15, 2024, by Lee Ker Yang
Allowable sequences - June 09, 2024, by Lim Jeck
Puzzles and math - June 02, 2024, by Aloysius Ng
Curves with many torsion points - May 25, 2024, by Yap Jit Wu
Too lazy to integrate - May 18, 2024, by David Lin
Vieta’s formulas and 𝜁(2) - May 13, 2024, by Ang Yan Sheng
A nice story problem from Germany - April 21, 2024, by Low Choo Ray
Painting by Numbers - April 14, 2024, by Lucas Boo
Elliptic Curves v2.0 - April 07, 2024, by Dylan Toh
Lattices for prime factorization - April 01, 2024, by David Lin
Intro to Linear Algebra - March 24, 2024, by Tan Wee Kean
Optimising your Solutions - March 17, 2024, by Ng Yu Peng
My Top 100* Theorems in Mathematics - March 09, 2024, by Ang Yan Sheng
More Rectangular Tilings - March 03, 2024, by Glen Lim
Sum of Squares and Cubes - February 25, 2024, by Yap Jit Woo
Who's Afraid of Topological Proofs? - February 19, 2024, by Etienne Ong
and More...
Wednesday 3 July 2024
Bangkok Trip 28 Jun to 2 Jul
Monday 1 July 2024
Sunday 30 June 2024
Saturday 22 June 2024
SMO 2024 (Junior and Senior) Round 2 Questions and Solutions
SMO 2024 Junior Round 2 Questions
Click here for the review session by Way Tan.
Thursday 13 June 2024
Sunday 9 June 2024
Invitation: IMO Alumni Reunion July 20–23 in UK (applications open)
This is posted on behalf of Po-Shen Loh.
I am happy to inform you that there is a new tradition at the IMO: the alumni reunion. I am the IMO Foundation Vice President for Advancement, and served for a decade as the USA IMO Team Leader (2014–2023). I was a contestant at IMO 1999. I am ordinarily also a math professor at Carnegie Mellon University.
As an IMO alum, you are invited. The goal of this event is to build a strong long-term network among IMO alumni, which will provide value for everyone involved. It overlaps with the last two days of the IMO itself, so you would get to meet your country's IMO team. Then, the alumni will go off on a 2-day excursion together to Blenheim Palace, Oxford, Bletchley Park, and Cambridge. The total event is 4 days long: July 20–23, 2024.
All details of this summer's IMO Alumni Reunion information are now public, at https://imof.co/reunion/reunion-2024. The application window is also already open.
In short: all past IMO alumni are invited, but we have a capacity limit of 50 spots this year, because it is the second year of the IMO Alumni Reunion's history. To be fair, the selection system for which 50 will attend is based purely upon time-of-application (proximity to 00:00 UTC on June 6), combined with a mechanism to balance attendance across countries. The full details are on the reunion webpage.
I hope you will find this to be a useful new tradition. It could help alumni find jobs, hire great candidates, and even recruit terrific students. It also could help build new friendships across borders. I had the luxury of attending many IMO's as a country's Team Leader, and my personal experience is that this network is one which will strongly benefit anyone who invests their effort in building meaningful relationships. Alumni are currently responsible for the costs, but that may change in the future if additional donations are received.
If you know other IMO alumni who might be interested, please forward this message to them.
I hope to see you at an upcoming IMO reunion, as the IMO travels from continent to continent. Even if you are not able to make it to this one, if you would like to be informed of future IMO reunion details each year, please leave your non-expiring email contact information here.
Best,
Po-Shen Loh
Thursday 6 June 2024
Wednesday 29 May 2024
SMO 2024 (Open Section) Answers
SMO 2024 Open Questions
SMO 2024 (Open Section) Answers
1. 1540
2. 69
3. 4
4. 99999
5. 3
6. 2025
7. 110
8. 5
9. 17
10. 160
11. 10
12. 10
13. 3
14. 81
15. 2
16. 17
17. 4
18. 2516
19. 761
20. 1009
21. 2
22. 24
23. 45 (edited)
24. 441
25. 146 (edited)
The above SMO Open answers are provided by Mathlete Training Centre. Worked solutions (真题解答) by MTC are here. Watch Way's solution review here (live on 30 May, 4 pm)
SMO 2024 (Open Section) Answers
1. 1540
2. 69
3. 4
4. 99999
5. 3
6. 2025
7. 110
8. 5
9. 17
10. 160
11. 10
12. 10
13. 3
14. 81
15. 2
16. 17
17. 4
18. 2516
19. 761
20. 1009
21. 2
22. 24
23. 45 (edited)
24. 441
25. 146 (edited)
The above SMO Open answers are provided by Mathlete Training Centre. Worked solutions (真题解答) by MTC are here. Watch Way's solution review here (live on 30 May, 4 pm)
Tuesday 28 May 2024
SMO 2024 (Senior Section) Answers
SMO 2024 Senior Questions
SMO 2024 (Senior Section) Answers
1. D
2. B
3. D (edited)
4. A
5. D
6. 64
7. 242
8. 506
9. 3
10. 2048
11. 145
12. 8099
13. 128 (edited)
14. 965
15. 25
16. 40
17. 9
18. 160
19. 72
20. 609
21. 521 (edited)
22. 129
23. 21
24. 94
25. 26
The above SMO Senior answers are provided by Mathlete Training Centre and Way Tan. Refer here for MTC's worked solutions (考题解答). Watch Way's solution review here.
SMO 2024 (Senior Section) Answers
1. D
2. B
3. D (edited)
4. A
5. D
6. 64
7. 242
8. 506
9. 3
10. 2048
11. 145
12. 8099
13. 128 (edited)
14. 965
15. 25
16. 40
17. 9
18. 160
19. 72
20. 609
21. 521 (edited)
22. 129
23. 21
24. 94
25. 26
The above SMO Senior answers are provided by Mathlete Training Centre and Way Tan. Refer here for MTC's worked solutions (考题解答). Watch Way's solution review here.
SMO 2024 (Junior Section) Answers
SMO 2024 Junior Questions
SMO 2024 (Junior Section) Answers
1. D
2. D
3. B
4. C
5. C
6. 76
7. 89
8. 17
9. 1825
10. 10
11. 19 (edited)
12. 5
13. 9920
14. 23
15. 72
16. 25
17. 2451
18. 32
19. 16
20. 3
21. 504
22. 360
23. 15630
24. 45
25. 3360 (edited)
The above SMO Junior answers are provided by Way Tan. Watch the solution review here. Refer here for worked solutions by Mathlete Training Centre.
SMO 2024 (Junior Section) Answers
1. D
2. D
3. B
4. C
5. C
6. 76
7. 89
8. 17
9. 1825
10. 10
11. 19 (edited)
12. 5
13. 9920
14. 23
15. 72
16. 25
17. 2451
18. 32
19. 16
20. 3
21. 504
22. 360
23. 15630
24. 45
25. 3360 (edited)
The above SMO Junior answers are provided by Way Tan. Watch the solution review here. Refer here for worked solutions by Mathlete Training Centre.
Sunday 26 May 2024
Friday 24 May 2024
IOI 2024 Singapore Team
The IOI 2024 Singapore Team comprises the following students:
Brian Xiao Boyang, RI Year 2
Kang Yiming, RI Year 6
Sun Beichen, HCI Year 5
Yaw Chur Zhe, HCI Year 6 (IOI 2023 Silver, IOI 2021)
Monday 20 May 2024
Wednesday 15 May 2024
ChatGPT (clear winner) vs Meta AI
ChatGPT (3 separate searches):
Meta AI (2 separate searches):
ChatGPT is clearly more accurate. Meta AI seems to confuse Lim Jeck with Lim Li and Lim Min.
Monday 13 May 2024
FREE Introduction to Competitive Programming course
This is posted on behalf of Mr Yu.
Hello! 👋
We are inviting you to join our Introduction to Competitive Programming course. This course is targeted for students interested in learning CS and perhaps participating in the 2025 National Olympiad in Informatics (NOI).
No prior experience is required! We will teach all the skillsets necessary to get started in competitive programming, starting from the basics of C++ syntax - don’t worry if you’ve never done programming prior to this.
You will be trained to solve problems with an algorithmic nature, such as those found in NOI and other similar competitive programming competitions. Participants will be equipped with both the foundational tools to deconstruct such problems as well as some common methods to solve these problems.
This course is targeted towards schools who have little to no computer science resources available and due to the limited manpower those students will be given priority access.
Our experience in the field include (but are not limited to):
-Total of 6 Gold medals in the NOI and a 4th place finish
-Asia Pacific Informatics Olympiad (APIO) Silver and Bronze medals
-Placing top 50 globally in Meta Hacker Cup
No prior experience is required for this course! You can sign up through the form below. Signups close May 20th and the course starts on June 1st.
Enquiries
Feel free to contact us at sgiocourse@gmail.com for more information
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