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Yudong Zhang

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Company/University

Nanjing Normal University

Personal Profile

http://computer.njnu.edu.cn/profile.ashx?staffID=102

Professional Interests

Data Mining

2013Rank
5Badges
205Score

Solver +10

Earned on 25 Jan 2012 for solving Problem 1. Times 2 - START HERE.

Promoter +10

Earned on 25 Apr 2012 for liking Problem 26. Determine if input is odd.

Commenter +10

 

Comment on a problem or solution.

Creator +20

Earned on 25 Apr 2012 for creating Problem 623. Rotate a Matrix.

Speed Demon +50

Earned on 25 Apr 2012 for first solving Problem 623. Rotate a Matrix.

Leader +20

 

Solve a problem with a best solution.

CUP Challenge Master +50

 

Solve all the problems in CUP Challenge problem group.

Quiz Master +20

Earned on 27 Jun 2014 for having 50 or more solvers for Problem 623. Rotate a Matrix.

Tiles Challenge Master +50

 

Solve all the problems in Tiles Challenge problem group.

Cody Challenge Master +50

 

Solve all the problems in Cody Challenge problem group.

ASEE Challenge Master +50

 

Solve all the problems in ASEE Challenge problem group.

Puzzler +50

 

Create 10 problems.

Scholar +50

 

Solve 500 problems.

Famous +20

 

Must receive 25 total likes for the problems you created.

Renowned +20

 

Must receive 10 likes for a solution you submitted.

Celebrity +20

 

Must receive 50 total likes for the solutions you submitted.

Likeable +20

 

Must receive 10 likes for a problem you created.