
| Contest | 2001 | 2002 | 2003 | 2004 | 
|---|---|---|---|---|
| Worldwide High School and Collegiate Onsites: | ||||
| IOI | TopCoder Collegiate Challenge Algorithm | - | - | top‑24 | 
| Date | Contest | Rank | Score | Prize | 
|---|---|---|---|---|
| 16 Apr 2004 | TCCC 2004 Algorithm | 23 
  
  semifinalist (top‑24)
 
  Ranked 8
  
  in Semifinal 3
  
   | 141.13 | |
| 25 Aug 2002 | IOI 2002 | 46 | 253/600 |