USACO17DEC - Haybale Feast

【LuoguP4085】【USACO17DEC】Haybale Feast
题目链接: https://www.luogu.org/problemnew/show/P4085

引言

好像教练说要考线段树和树状数组, 然后看到了这个题

这道题可以练习各种数据结构的基础操作…

我就浪费了大把时间用各种算法来A这道题

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