xiaoboup
UID: 5, 注册于 2 年前, 最后登录于 5 小时前, 最后活动于 2 天前.
解决了 0 道题目，RP: 0 (No. ?)
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我要冲金牌！我要得第一！
This person is lazy and didn't join any contests or homework.
This person is lazy and didn't write any solutions.