Jaehyun Koo
Timeline
| Contest | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Major Individual Competitions: | |||||||||||
| TopCoder Open Algorithm | top‑16 | - | - | - | Google Code Jam | 12 | 23 | - | - | - | Facebook Hacker Cup | 19 | 11 | 6 | 9 | 7 | - | Yandex.Algorithm | - | - | - | - | - | - | - | - | 8 | - |
| Major Team Competitions: | |||||||||||
| Google Hash Code | - | - | - | - | 36 | 14 | - | - | - | ||
| Worldwide High School and Collegiate Onsites: | |||||||||||
| IOI | 
46
| 
15
| ICPC World Finals | 20 | 24 | ||||||
| Regional International Contests: | |||||||||||
| CodeChef SnackDown | - | 13 | - | 24 | - | - | - | - | Code Festival | - | 5 | - | - | - | - | - | - | - | - | M(IT)^2 Spring Invitationals | - | - | - | - | - | - | - | - | - | 15 | 15 |
- — competition hasn't been held that year, or wasn't an international championship, or we have no info about it
F — participated in the final event, but the rank is unknown
Q — qualified to the final event but hasn't participated in it
Q* — qualified to the final event only after some other contestant refused to participate
Individual Results
| Date | Contest | Rank | Score | Prize |
|---|---|---|---|---|
| 11 May 2024 | M(IT)^2 2024 Spring Invitationals | 15
15
| 100/500 | |
| 03 May 2025 | M(IT)^2 2025 Spring Invitationals | 15
15
| 245/500 | |
| 25 Nov 2017 | Code Festival 2017 | 5
5
| 5800 | ¥81915 |
| 09 Jan 2022 | CodeChef SnackDown 2021 | 24
24
| 3/7 | $500 |
| 02 Aug 2015 | IOI 2015 | 46
46
| 389.55/600 | |
| 19 Aug 2016 | IOI 2016 | 15
15 - 21
| 432/600 | |
| 03 Dec 2024 | Yandex Cup 2024 Algorithm | 8
8
| 40 | |
| 14 Jun 2017 | Facebook Hacker Cup 2017 | 19
19
| 28/100 | $100 |
| 25 Oct 2019 | Facebook Hacker Cup 2019 | 11
11
| 75/100 | $100 |
| 05 Dec 2020 | Facebook Hacker Cup 2020 | 6
6
| 76/100 | $500 |
| 11 Dec 2021 | Facebook Hacker Cup 2021 | 9
9
| 32/100 | $500 |
| 09 Dec 2023 | Meta Hacker Cup 2023 | 7
7
| 73/100 | $500 |
| 08 Aug 2020 | Google Code Jam 2020 | 12
12
| 82/200 | $100 |
| 07 Aug 2021 | Google Code Jam 2021 | 23
23
| 60/200 | $100 |
| 19 Nov 2021 | Topcoder Open 2021 Algorithm | 16
semifinalist (top‑16)
Ranked 8
in Semifinal 1
| 92.62 |
Team Results
| Date | Contest | Rank | Team | Score | Prize |
|---|---|---|---|---|---|
| 16 Feb 2019 | CodeChef SnackDown 2019 | 13
13
|
TAK TAK:
| 7/10 | |
| 19 Apr 2018 | ACM-ICPC 2018 World Finals | 20
20
| KAIST
(Deobureo Minkyu Party):
| 6/11 | |
| 04 Apr 2019 | ICPC 2019 World Finals | 24
24
| KAIST
(Deobureo Minkyu Party):
| 6/11 | |
| 25 Apr 2020 | Google Hash Code 2020 | 36
36
|
78-9:
| 1422287 | |
| 30 Apr 2022 | Google Hash Code 2022 | 14
14
|
youtu.be/HmoeUTXINxs:
| 2355268 |