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CF1311E Construct the Binary Tree 洛谷传送门 题目描述 You are given two integers nn and dd . You need to construct a rooted binary tree consisting of nn vertic 阅读全文
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CF817F MEX Queries 洛谷传送门 题目描述 You are given a set of integer numbers, initially it is empty. You should perform nn queries. There are three different 阅读全文
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USACO Cow at Large 洛谷传送门 题目描述 最后,Bessie 被迫去了一个远方的农场。这个农场包含 NN 个谷仓(2 \le N \le 10^52≤N≤105)和 N-1N−1 条连接两个谷仓的双向隧道,所以每两个谷仓之间都有唯一的路径。每个只与一条隧道相连的谷仓都是农场的出口。 阅读全文
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CF7B Memory Manager 洛谷传送门 题目描述 There is little time left before the release of the first national operating system BerlOS. Some of its components are 阅读全文