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题目描述 The Looksery company, consisting of nn staff members, is planning another big party. Every employee has his phone number and the phone numbers of 阅读全文
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题目描述 Of course our child likes walking in a zoo. The zoo has n areas, that are numbered from 1 to n. The i-th area contains ai animals in it. Also the 阅读全文
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洛谷P3384【模板】树链剖分·第一个树剖祭 题目描述 如题,已知一棵包含N个结点的树(连通且无环),每个节点上包含一个数值,需要支持以下操作: 操作1: 格式: 1 x y z 表示将树从x到y结点最短路径上所有节点的值都加上z 操作2: 格式: 2 x y 表示求树从x到y结点最短路径上所有节点 阅读全文
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Place the Robots Robert is a famous engineer. One day he was given a task by his boss. The background of the task was the following:Given a map consis 阅读全文