qingyou
UID: 807, Registered at 2026-10-12 10:11:07, last login at 2026-10-12 10:11:07, currently offline.
Solved 1 problems, RP: 5 (No. 464)
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Bio
苦难是花开的伏笔 冬天总为春天作序
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Accepted Problems
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Recent Activities
This person is lazy and didn't join any contests or homework.