Ants Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 20047   Accepted: 8330 Description An army of ants walk on a horizontal pole of length l cm, each with a constant speed of 1 cm/s. When a walking ant reaches an end of the pole, it imm…

一.前言 最近一段时间,网站经常出现两个问题: 1.内存占用率一点点增高,直到将服务器内存占满. 2.访问某个页面时,页面响应过慢,CPU居高不下. 初步判断内存一点点增多可能是因为有未释放的资源一直在占用内存,而cpu居高不下可能是因为执行了耗时的操作. 下面我们就使用ANTS Performance Profiler和ANTS Memory Profiler这两个工具来分析具体原因. ------------------------------------------------------…

求最短时间和最长时间. 当两个蚂蚁相遇的时候,可以看做两个蚂蚁穿过,对结果没有影响.O(N)的复杂度 c++版: #include <cstdio> #define min(a, b) (a) < (b) ? (a) : (b) #define max(a, b) (a) > (b) ? (a) : (b) int main(void) { #ifndef ONLINE_JUDGE freopen("in.txt", "r", stdin);…

蚂蚁相撞会各自回头.←可以等效成对穿而过,这样移动距离就很好算了. 末状态蚂蚁的顺序和初状态其实是相同的. 那么剩下的就是记录每只蚂蚁的标号,模拟即可. /*by SilverN*/ #include<algorithm> #include<iostream> #include<cstring> #include<cstdio> #include<cmath> #include<vector> using namespace std;…

"One thing is for certain: there is no stopping them;the ants will soon be here. And I, for one, welcome ournew insect overlords." Kent Brockman Piotr likes playing with ants. He has n of them on a horizontal pole L cm long. Each ant is facing e…

.NET性能调优系列文章 系列文章索引 .NET性能调优之一:ANTS Performance Profiler的使用 .NET性能调优之二:使用Visual Studio进行代码度量 .NET性能调优之三:YSlow相关规则的调优工具和方法 在使用.NET进行快速地上手与开发出应用程序后,接下来面临的问题可能就是程序性能调优方面的问题,而性能调优有时候会涉及方方面面的问题,如程序宿主系统.数据库.网络环境等等,而当程序异常庞大复杂的时候,性能调优将变得更加无从下手. 本系列文章主要会介绍一些.…

7.2 There are three ants on different vertices of a triangle. What is the probability of collision (between any two or all of them) if they start walking on the sides of the triangle? Assume that each ant randomly picks a direction, with either direc…

Problem DPiotr's AntsTime Limit: 2 seconds "One thing is for certain: there is no stopping them;the ants will soon be here. And I, for one, welcome ournew insect overlords." Kent Brockman Piotr likes playing with ants. He has n of them on a hori…

E. Ants in Leaves 题目连接: http://www.codeforces.com/contest/622/problem/E Description Tree is a connected graph without cycles. A leaf of a tree is any vertex connected with exactly one other vertex. You are given a tree with n vertices and a root in t…

B. Ants Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/317/problem/B Description It has been noted that if some ants are put in the junctions of the graphene integer lattice then they will act in the following fashion: eve…