lone ranger
UID: 228, Registered at 2024-9-28 16:40:14, last login at 2024-10-23 18:28:18, last active at 2024-10-14 23:44:37.
Solved 33 problems, RP: 100 (No. 110)
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Bio
脑袋好痒，要长脑子了
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Recent Activities
This person is lazy and didn't join any contests or homework.