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2019南昌网络赛　 I. Yukino With Subinterval　树状数组套线段树
摘要：I. Yukino With Subinterval 题目链接： Problem Descripe Yukino has an array $a_1, a_2 \cdots a_n$. As a tsundere girl, Yukino is fond of studying subinterva 阅读全文
posted @ 2019-09-11 21:21 mmqqdd 阅读(322) 评论(0) 推荐(0)