
| Contest | 2006 | 2007 | 2008 | 2009 | 
|---|---|---|---|---|
| Major Individual Competitions: | ||||
| TopCoder Open Algorithm | top‑48 | top‑72 | Google Code Jam | - | Q | 
| Worldwide High School and Collegiate Onsites: | ||||
| ICPC World Finals | 35 | TopCoder Collegiate Challenge Algorithm | 6 | - | - | 
| Date | Contest | Rank | Score | Prize | 
|---|---|---|---|---|
| 02 Nov 2007 | TCCC 2007 Algorithm | 6 
  
  6
 | 138.60 | $1000 | 
| 14 Nov 2008 | Google Code Jam 2008 | 100000004 
  
  qualified
 
  Ranked 4
  
  in APAC Semifinal
  
   | ||
| 29 Jun 2007 | Topcoder Open 2007 Algorithm | 38 
  
  semifinalist (top‑48)
 
  Ranked 13
  
  in Semifinal 1
  
   | 201.94 | $400 | 
| 15 May 2008 | Topcoder Open 2008 Algorithm | 68 
  
  semifinalist (top‑72)
 
  Ranked 23
  
  in Semifinal 1
  
   | 50 | $500 | 
| Date | Contest | Rank | Team | Score | Prize | 
|---|---|---|---|---|---|
| 15 Mar 2007 | ACM-ICPC 2007 World Finals | 35 
  
  35
 | The University of Tokyo 
  
  (kitsune-):
   | 4/10 | $300 |