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The Company Dynamic Rankings has developed a new kind of computer that is no longer satisfied with the query like to simply find the k-th smallest num 阅读全文
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COT - Count on a tree #tree #tree You are given a tree with N nodes.The tree nodes are numbered from 1 to N.Each node has an integer weight. We will a 阅读全文
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Feed the dogs Time Limit: 6000MS Memory Limit: 65536K Total Submissions: 20634 Accepted: 6494 Description Wind loves pretty dogs very much, and she ha 阅读全文
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DQUERY - D-query #sorting #tree #sorting #tree English Vietnamese Given a sequence of n numbers a1, a2, ..., an and a number of d-queries. A d-query i 阅读全文