YunYan

摘要： You task is to find minimal natural number N, so that N! contains exactly Q zeroes on the trail in decimal notation. As you know N! = 1*2*...*N. For e 阅读全文

摘要： 一所学校不久前买了第一台电脑（所以这台电脑的ID是1）。近年来，学校购买了N-1新电脑。每台新电脑都连接到一台先前安装的电脑上。学校的管理人员担心网络运行缓慢，希望知道第i台计算机需要发送信号的最大距离si（即到最远计算机的电缆长度）。您需要提供此信息。 提示：示例输入与此图对应。从图中，你可以看到 阅读全文

摘要： My birthday is coming up and traditionally I'm serving pie. Not just one pie, no, I have a number N of them, of various tastes and of various sizes. F 阅读全文

摘要： 1.binary_search(arr[],arr[]+size,index) #include<algorithm> 功能 在数组中查找某个元素是否存在 函数模板：binary_search(地址1,地址2,v) 返回值：若是查到了v返回1，查找不到则返回0； 时间复杂度：log2(N)+2 2. 阅读全文

摘要： Give you three sequences of numbers A, B, C, then we give you a number X. Now you need to calculate if you can find the three numbers Ai, Bj, Ck, whic 阅读全文

摘要： 思路：两次二分查找。。第一次寻找该数字第一次出现的位置，第二次查找该数字最后一次出现的位置 做差并加1； 阅读全文

摘要： Given a tree (a connected graph with no cycles), you have to find the farthest nodes in the tree. The edges of the tree are weighted and undirected. T 阅读全文

摘要： Building and maintaining roads among communities in the far North is an expensive business. With this in mind, the roads are build such that there is 阅读全文

摘要： After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has committed to create a bovine marath 阅读全文

摘要： The northern part of the Pyramid contains a very large and complicated labyrinth. The labyrinth is divided into square blocks, each of them either fil 阅读全文

摘要： Now give you an string which only contains 0, 1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,9.You are asked to add the sign ‘+’ or ’-’ between the characters. Just like giv 阅读全文

摘要： 小明做了一个很久很久的梦，醒来后他竟发现自己和朋友在一个摇摇欲坠的大棋盘上，他们必须得想尽一切办法逃离这里。经过长时间的打探，小明发现，自己所在的棋盘格子上有个机关，上面写着“你只有一次机会，出发后t秒大门会为你敞开”，而他自己所在的棋盘是大小为 N*M 的长方形，他可以向上下左右四个方向移动（不可 阅读全文

摘要： Fox Ciel is playing a mobile puzzle game called "Two Dots". The basic levels are played on a board of size n × m cells, like this: Each cell contains 阅读全文