chensunrise

摘要： DescriptionYou are given a sequence ofnintegersa1, a2, ... , anin non-decreasing order. In addition to that, you are given several queries consisting ... 阅读全文

摘要： DescriptionFarmer John's cows refused to run in his marathon since he chose a path much too long for their leisurely lifestyle. He therefore wants to ... 阅读全文

摘要： DescriptionThere are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask like this "How far is it... 阅读全文

摘要： DescriptionCerror is the mayor of city HangZhou. As you may know, the traffic system of this city is so terrible, that there are traffic jams everywhe... 阅读全文

摘要： 题目描述If the difference between any two adjancent elements in a sequence is not more than K, then we call this sequence is a K-diff sequence. A subseque... 阅读全文

摘要： DescriptionFreddy Frog is sitting on a stone in the middle of a lake. Suddenly he notices Fiona Frog who is sitting on another stone. He plans to visi... 阅读全文

摘要： Closest Common AncestorsTime Limit:2000MSMemory Limit:10000KTotal Submissions:14635Accepted:4676DescriptionWrite a program that takes as input a roote... 阅读全文

摘要： DescriptionWe will use the following (standard) definitions from graph theory. LetVbe a nonempty and finite set, its elements being called vertices (o... 阅读全文

摘要： DescriptionA number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a list o... 阅读全文

摘要： DescriptionA network administrator manages a large network. The network consists of N computers and M links between pairs of computers. Any pair of co... 阅读全文