陈禹承

UID: 267, 注册于 9 个月前, 最后登录于 9 个月前, 目前离线.

解决了 27 道题目，RP: 149 (No. 357)

该用户太懒，这里啥也没写 (´・ω・｀)

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This person is lazy and didn't join any contests or homework.

信息学奥赛导学: 27