BC20270231
UID: 2073, Registered at 9 months ago, last login at 1 month ago, currently offline.
Solved 0 problems, RP: 0 (No. ?)
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我是山鸭nb666
This person is lazy and didn't join any contests or homework.
UID: 2073, Registered at 9 months ago, last login at 1 month ago, currently offline.
Solved 0 problems, RP: 0 (No. ?)
我是山鸭nb666