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题目:https://nanti.jisuanke.com/t/38229 DSM(Data Structure Master) once learned about tree when he was preparing for NOIP(National Olympiad in Informati 阅读全文
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https://www.luogu.org/problemnew/show/P4742 题目背景 [Night - 20:02[Night−20:02 P.M.]P.M.] 夜空真美啊……但是……快要结束了呢…… 题目描述 一天的活动过后,所有学生都停下来欣赏夜空下点亮的风筝。CurtisCurti 阅读全文