1 Dan
Derek 
| Country/Region |  China |
|---|---|
| Birth Year | 2005 |
| Codeforces ID | DerekFeng |
| Affiliation | Jiangsu Xishan Senior High School |
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This user has not competed in a rated contest yet.
1 Dan
Derek 
| Country/Region | China |
|---|---|
| Birth Year | 2005 |
| Codeforces ID | DerekFeng |
| Affiliation | Jiangsu Xishan Senior High School |
This user has not competed in a rated contest yet.