真ikun，代码求hackQAQ

P2161 [SHOI2009] 会场预约

一眼黑子
by I_KUN @ 2023-10-20 21:11:01

此帖杰，没考虑以前的区间包容现在的区间QAQ
by Zhangikun @ 2023-10-22 09:28:20

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