题意;要你实现一个求第k大数的数据结构。树状数组模板题。AC代码：const i
Description：这是一道模板题。给一棵有根树，这棵树由编号为 1…N 的 N 个结
Description：The n2 upper bound for any sorting algorithm is easy to obtain: just take two elements that are misplaced with respect to each other and swap them. Conrad conceived an algorithm that
e S = {s1, s2, s3, ...., sn} ? For example, we assume that S = {1, 2, 3}, and you can find seven nondecreasing sub...
DescriptionIn this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the sequence
这道题，一开始模拟半天不对，数据量不是模拟可以写的，想到了树状数
Description：There are nnn points on a coordinate axis OX. The i−thi-thi−th point is located at t two points occupy the same coo...
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