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A vertex cover of a graph is a set of vertices such that each edge of the graph is incident to at least one vertex of the set. Now given a graph with 阅读全文
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免费chatgpt使用网址 http://ffff.chat:2023 在设置中设置userID Formation is very important when taking a group photo. Given the rules of forming K rows with N peopl 阅读全文
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Given a tree, you are supposed to tell if it is a complete binary tree. Input Specification: Each input file contains one test case. For each case, th 阅读全文
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Given a constant K and a singly linked list L, you are supposed to reverse the links of every K elements on L. For example, given L being 1→2→3→4→5→6, 阅读全文
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Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are 阅读全文