
| Contest | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 
|---|---|---|---|---|---|---|---|
| Major Individual Competitions: | |||||||
| TopCoder Open Algorithm | - | - | - | - | 9 | top‑48 | Google Code Jam | - | - | - | - | 42 | 48 | 
| Worldwide High School and Collegiate Onsites: | |||||||
| IOI | ICPC World Finals | TopCoder Collegiate Challenge Algorithm | - | - | - | - | Q | 7 | top‑24 | 
| Date | Contest | Rank | Score | Prize | 
|---|---|---|---|---|
| 05 Apr 2003 | TCCC 2003 | 100000013 
  
  qualified
 
  Ranked 13
  
  in Round 4
  
   | ||
| 16 Apr 2004 | TCCC 2004 Algorithm | 7 
  
  7 - 9
 
  Ranked 4 - 6
  
  in Wildcard
  
   | 0 | |
| 11 Mar 2005 | TCCC 2005 Algorithm | 23 
  
  semifinalist (top‑24)
 
  Ranked 8
  
  in Semifinal 3
  
   | 0 | $400 | 
| 16 Oct 1999 | IOI 1999 | 9 | 401/600 | |
| 15 Oct 2004 | Google Code Jam 2004 | 42 
  
  42
 | 233.68 | $511 | 
| 23 Sep 2005 | Google Code Jam 2005 | 48 
  
  48
 | 82.85 | $1000 | 
| 12 Nov 2004 | TopCoder Open 2004 Algorithm | 9 
  
  9
 
  Ranked 6
  
  in Wildcard
  
   | 137.60 | $500 | 
| 14 Oct 2005 | Topcoder Open 2005 Algorithm | 35 
  
  semifinalist (top‑48)
 
  Ranked 12 - 15
  
  in Semifinal 1
  
   | 0 | $500 | 
| Date | Contest | Rank | Team | Score | Prize | 
|---|---|---|---|---|---|
| 10 Mar 2001 | ACM-ICPC 2001 World Finals | 12 | Tsinghua University 
  
  (Hurricane):
   | 5/9 |