Solve a problem for the first time
Awarded to Dao Dong on 21 Apr 2022
Solve all the problems in CUP Challenge
Solve all the problems in Draw Letters problem group
Awarded to Dao Dong on 20 May 2022
Solve a community group
Awarded to Dao Dong on 19 May 2022
Solve all the problems in Introduction to MATLAB problem group
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