
| Contest | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 
|---|---|---|---|---|---|---|---|---|
| Major Individual Competitions: | ||||||||
| TopCoder Open Algorithm | - | - | - | top‑48 | ||||
| Worldwide High School and Collegiate Onsites: | ||||||||
| IOI | ICPC World Finals | 14 | 50 | TopCoder Collegiate Challenge Algorithm | - | - | - | top‑48 | 
| Date | Contest | Rank | Score | Prize | 
|---|---|---|---|---|
| 02 Nov 2007 | TCCC 2007 Algorithm | 44 
  
  semifinalist (top‑48)
 
  Ranked 15
  
  in Semifinal 1
  
   | 0 | $400 | 
| 30 Sep 2000 | IOI 2000 | 116 | 280/700 | |
| 21 Jul 2001 | IOI 2001 | 73 | 258/600 | |
| 29 Jun 2007 | Topcoder Open 2007 Algorithm | 38 
  
  semifinalist (top‑48)
 
  Ranked 13 - 16
  
  in Semifinal 2
  
   | 0 | $400 | 
| Date | Contest | Rank | Team | Score | Prize | 
|---|---|---|---|---|---|
| 12 Apr 2006 | ACM-ICPC 2006 World Finals | 14 
  
  14
 | KAIST 
  
  (KAIST Davidoff):
   | 4/10 | |
| 15 Mar 2007 | ACM-ICPC 2007 World Finals | 50 
  
  50
 | KAIST 
  
  (WaTangKa):
   | 3/10 | $300 |