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For the given sequence with n different elements find the number of increasing subsequences with k + 1 elements. It is guaranteed that the answer is n 阅读全文
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You are given a directed graph with n nodes and m edges, with all edges having a certain weight. There might be multiple edges and self loops, and the 阅读全文
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In the lattice points of the coordinate line there are n radio stations, the i-th of which is described by three integers: xi — the coordinate of the 阅读全文
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https://www.cnblogs.com/OYzx/p/5506468.html BZOJ2863:(允许离线) 题目大意：给定一个n*n的矩形，以及若干个操作，操作有如下两种： 1.给矩形的（x，y）加上一个v； 2.询问某个子矩阵的权值和。 数据范围：n<=5*10^5,操作数<=2*10 阅读全文