Annyeong1
- Jeeho Yoon aka gs22059
- Gyeonggi Schence HS (2022-2024)
- Go back to Korean page here
- Sadly, my blog is exclusively in Korean for now.
- Last updated on 12th Nov 2024
Programming
I do problem solving and competitive programming. I compete in various programming competitions and sometimes organize or test them.
My max ratings are Codeforces Master and AtCoder 1 kyu. I also solved 1000+ Problems on BOJand am ranked at Diamond II and Arena SS on solved.ac.
I am contributing to the Korean CP community by participating as external testers for various school contests. I made these problemsand tested these.
Contest writing, problemsetting, and testing
- Tester for 2024 Kookmin & Chungang University Programming Contest, its Open Contest (2024. 11. 30.), its practice session and the open contest for the practice session.
- Tester for 2nd DGUPC (2024. 10. 27.) and its Open Contest (2024. 11. 2.)
- Problemsetter, tester and staff for IamCoder Half-year Contest 2024 (2024. 8. 22.) and its Open Contest (2024. 8. 24.)
- Writer of 트리를 쓰는 트리 문제, 지문이 트리로 가득 찬 트리 문제, 무한평면 색칠하기
- Contributed on problemsetting of 서바이벌 by carinae
- Managed the onsite contest
- Tester for 2024 HEPC (2024. 5. 14.) and its Open Contest (2024. 5. 20.)
- Tester for KSA Automata Winter Contest 2024 / solved.ac Arena #22 (2024. 2. 24.)
- Tester for 3rd Boramae Cup and its Open Contest (solved.ac Arena #20) (2024. 2. 10.)
- Tester for 3rd Boramae Cup Qualification Round and its Open Contest (2024. 1. 19. ~ 21.)
- Tester, coordinator and staff for IamCoder Qualification Test 2024 (2024. 3. 18.) and its Open Contest (2024. 4. 6.)
- Contributed on problemsetting of all problems
- Managed the CMS online judge system
- Problemsetter, tester and staff for IamCoder Qualification Test 2023 (2023. 3. 15.) and its Open Contest (2023. 4. 7.)
Clubs
I am a part of IamCoder Coding Club of GSHS.
IamCoder is a problem solving and competitive programming club at GSHS. We learn about various algorithms and data structures at the olympiads level, and run seminars for contest editorials and various advanced lectures.
We are sponsored by Nexon for our yearly contest on year-ends since 2016, and Jane Street for our yearly contest on summer breaks since 2024.
- Writer of IamCoder 9th Yearly Contest 2024
- Writer of IamCoder 1st Half-year Contest 2024 (2024. 8. 22.)
- 11th Place, IamCoder 8th Yearly Contest 2023 (2023. 12. 26.) : Team 구뇌
- 10th Place, IamCoder 7th Yearly Contest 2022 : Team 르네상수 시대 대표코더 레오나르도 라빈치
Competitions
- Korean Olympiad on Informatics
- 27th Place, Bronze Medal, 2024 Round 2 HS Division (2024. 7. 13)
- 20th Place, Silver Medal, 2024 Round 1 HS Division (2024. 5. 12.)
- 30th Place, Bronze Medal, 2023 Round 2 HS Division (2023. 7. 15)
- Bronze Medal, 2023 Round 1 HS Division (2023. 5. 14.)
- 97th Place, Honorable Mention, 2022 Round 2 HS Division (2022. 7. 16.)
- Bronze Medal, 2022 Round 1 HS Division (2022. 5. 15.)
- ICT Award Korea
- 3~4th Place, Silver Medal, 2023 Coding Competition, HS Division (2023. 6. 10.)
- 5~9th Place, Bronze Medal, 2022 Coding Competition, HS Division (2022. 6. 11.)
- 국민대학교 알고리즘 대회
- Honorable Mention, 9th Competition (2024. 08. 02.)
- Honorable Mention, 7th Competition (2022. 08. 05.)
- KITPA Youth IT Competition
- 2nd Place, Gold Medal, 3rd Competition on Algorithms, HS Division (2024. 9. 28.)
- 3rd Place, Gold Medal, 3rd Competition on Programming Languages, HS Division (2023. 9. 28.)
- 5th Place, Silver Medal, 2nd Competition on Algorithms, HS Division (2024. 3. 16.)
- 2nd Place, Gold Medal, 2nd Competition on Programming Languages, HS Division (2024. 3. 16.)
- 3rd Place, Gold Medal, 1st Competition on Algorithms, HS Division (2023. 9. 16.)
- 3rd Place, Gold Medal, 1st Competition on Programming Languages, HS Division (2023. 9. 16.)
Research
I research other things as well as computer science things. Although, CS studies are my main interests.
- (2024. 09. ~ 12.) Probability of a Specific Subset Appearance on Maximal Independent Sets of Path Graphs
- (2024. 04. ~ 11.) Efficient Solutions for k-PDMI scheduling problem on interval graphs using DLAS
- Conducted as Creative R&E Program of KOFAC
- (2024. 01. ~ 05.) An Efficient Solution for the Interval Scheduling Maximization Problem with Interval Addition Queries
- Submitted to Korea Institute of information and Communication Engineering, Academic Conference of Spring 2024
- Distinction (for HS division)
- Submitted to Korea Institute of information and Communication Engineering, Academic Conference of Spring 2024
- (2023. 09. ~ 2024. 05.) Algorithms for Disjoint Matching of Intervals and Disjoint k-Dimensional Matching of Proper Intervals
- Conducted for the graduation paper of GSHS
- (2023. 03. ~ 11.) A study on supercooling mechanism of aniline aromatic compounds and their mixtures (아닐린계 방향족 화합물의 치환기 위치에 따른 과냉각의 정도에 대한 연구)
- Silver Award, Samsung Humantech Paper Awards 30th Competition Chemistry Division for HS (2023. 11. ~ 2024. 1.)
- Conducted as Advanced R&E Program of GSHS
- (2022. 03. ~ 11.) A Study on Algorithms for Calculating Maximum Disjoint Matching of Interval Graphs
- Submitted to Korea Institute of information and Communication Engineering, Academic Conference of Spring 2023
- Distinction (for HS division)
- Conducted as Basic R&E Program of GSHS
- Submitted to Korea Institute of information and Communication Engineering, Academic Conference of Spring 2023
Projects
I basically do whatever projects I want / am appealed to.
- RUAcoder: cross-compatibility program between Codeforces Polygon and Contest Management System, and competitive programming competition inspection integrity checker implemented using Java
- NN-Predictor: Codeforces rating change prediction model based on Tensorflow
- Burenda: Simple 3D modelling and rendering program in C++
- 1학년 6반 공지 페이지: A deprecated Github Pages website for notifications on school and class events
- Antimatter: A deprecated discord bot in Javascript (I don’t do JS now)
Studies & Experiences
These are some other weird things I do/did.
- KAIST 2024 Summer School on Combinatorics and Algorithms (2024. 7. 22. ~ 26.)
- KAIST Creative Global Leader Program (2024. 1. 22. ~ 25.)
- Korean Linguistics Olympiad 2022/23 Winter School (2023. 1. ~ 2.)
- Korean Linguistics Olynpiad 2022/23 Honorable Mention (2023. 1. 8.)
- Michigan Math & Science Scholarship Introduction to Graph Theory (2023. 07. 23. ~ 08. 03.)
- Field Research on lab equipments, SKKU Cooperative Center for Research Facilities (2023. 02. 07 ~ 09.)
- Bronze Medal, Round 2 of Korean Mathematics Olympiad, MS Division (2020. 11. 21.)
Translations
I do English and Korean text translations, mainly from English to Korean.
- Antimatter Dimensions: 2020. 08. ~
- I translated 21K+ words in Antimatter Dimensions, an incremental game by Hevipelle.
- I currently am a playtester for the mobile version of the game.
- IOISTUDY: 2023. 03. ~ 12.
- IOISTUDY is a group of students for translations of foreign programming problems. I translated problems from JOISC Season 2021/22 and wrote solutions.
- SD Maid 2: 2023. 03. ~
- I translated 2K+ words in SD Maid 2/SE, an android app by darken.
Links
- You can contact me @ me@annyeong.one.
- If you need a faster response, or use Discord, my Discord username is Annyeong1.
- I don’t spend much time on Facebook (Jeeho Yoon), X (Annyeong1main), or Instagram (annyeong.one).
- Here is a link to my GitHub(Annyeong-One) account.
- Here are my Codeforces, Atcoder, boj.kr, solved.ac and KOISTUDY accounts.
- I participated on 78 Codeforces round (or 73% of total), 40 Atcoder rounds (60% of total), and 9 Arena rounds (56% total) in 2023.
- I participated on 21 Codeforces round and 36 Atcoder rounds in 2022.
- You can view all of my CP profiles on clist.by.