
| Contest | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| Major Individual Competitions: | |||||||||||
| TopCoder Open Algorithm | 9 | top‑16 | Google Code Jam | 7 | 21 | Facebook Hacker Cup | - | - | - | 7 | 12 | 
| Worldwide High School and Collegiate Onsites: | |||||||||||
| IOI | ICPC World Finals | 19 | 52 | ||||||||
| Date | Contest | Rank | Score | Prize | 
|---|---|---|---|---|
| 23 Aug 2008 | IOI 2008 | 12 | 412/600 | |
| 06 Mar 2015 | Facebook Hacker Cup 2015 | 7 
  
  7
 | 35/100 | $100 | 
| 03 Mar 2016 | Facebook Hacker Cup 2016 | 12 
  
  12
 | 32/100 | $100 | 
| 15 Aug 2014 | Google Code Jam 2014 | 7 
  
  7
 | 89/200 | $100 | 
| 10 Aug 2018 | Google Code Jam 2018 | 21 
  
  21
 | 15/200 | $100 | 
| 19 Nov 2014 | Topcoder Open 2014 Algorithm | 9 
  
  9
 
  Ranked 3
  
  in Wildcard
  
   | 216.16 | $200 | 
| 16 Nov 2018 | Topcoder Open 2018 Algorithm | 14 
  
  semifinalist (top‑16)
 
  Ranked 7
  
  in Semifinal 2
  
   | 110.71 | 
| Date | Contest | Rank | Team | Score | Prize | 
|---|---|---|---|---|---|
| 05 Feb 2010 | ACM-ICPC 2010 World Finals | 19 
  
  19
 | Seoul National University 
  
  (Seoul National rand()):
   | 5/11 | $300 | 
| 30 May 2011 | ACM-ICPC 2011 World Finals | 52 
  
  52
 | Seoul National University 
  
  (reverse_iterator):
   | 4/11 |