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摘要： D. Poker time limit per test 2.0 s memory limit per test 256 MB input standard input output standard output D. Poker time limit per test 2.0 s time li 阅读全文

摘要： The xor-longest Path Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 8273 Accepted: 1720 Description In an edge-weighted tree, the xor-leng 阅读全文

摘要： Andy the smart computer science student was attending an algorithms class when the professor asked the students a simple question, "Can you propose an 阅读全文

摘要： B. Destruction of a Tree time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output B. Destruction o 阅读全文

摘要： Have you ever played quoit in a playground? Quoit is a game in which flat rings are pitched at some toys, with all the toys encircled awarded. In the 阅读全文

摘要： Advanced CPU Manufacturer (ACM) is one of the best CPU manufacturer in the world. Every day, they manufacture n CPU chips and sell them all over the w 阅读全文

摘要： 优化一：每次更新节点时，记录当前走的这条路径的节点数，当节点数大于n时，有负环，退出。注意，这里与常规的节点被更新n次以上退出不一样，效率比常规高。 优化二：双端队列SLF优化。当当前节点到起点距离小于队首的时候，将此点插入队首，否则，正常插入队尾。可能咋一看感觉这种优化可能被用到的机会很少，但很可 阅读全文

摘要： E. Alternating Tree time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output E. Alternating Tree 阅读全文

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摘要： 链接：https://www.nowcoder.com/acm/contest/79/D来源：牛客网 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 262144K，其他语言524288K 64bit IO Format: %lld 时间限制：C/C++ 1秒，其他语言2秒 空间限制 阅读全文