Don't Treat Old Gadgets Like Garbage Did you get a new tablet or computer this holiday season? A new smart phone? Maybe a new TV? Here's a question to tell if you're naughty or nice. What will you do with the old one? Most people just throw old gadge…
Time Limit: 3000/1500 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 354 Accepted Submission(s): 100 Problem Description ZYB has a tree with N nodes,now he wants you to solve the numbers of nodes distanced no m…
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 175 Accepted Submission(s): 74 Problem Description ZYB has a premutation P,but he only remeber the reverse log of each prefix of the premutat…
To understand the backlog argument, we must realize that for a given listening socket, the kernel maintains two queues :要明白backlog参数的含义,我们必须明白对于一个listening socket,kernel维护者两个队列: 1.An incomplete connection queue, which contains an entry for each SYN t…
[源码下载] 重新想象 Windows 8 Store Apps (65) - 后台任务: 音乐的后台播放和控制 作者:webabcd 介绍重新想象 Windows 8 Store Apps 之 后台任务 音乐的后台播放和控制 示例用于保存每首音乐的相关信息的对象BackgroundTask/SongModel.cs /* * 用于保存每首音乐的相关信息 */ using System; using System.Threading.Tasks; using Windows.Storage; n…
CD Making Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.uestc.edu.cn/#/problem/show/65 Description Tom has N songs and he would like to record them into CDs. A single CD can contain at most K songs. In addition, Tom is very superstitious a…
问题1: $ make CDPATH="${ZSH_VERSION+.}:" && cd . && aclocal-1.13 -I m4 /bin/sh: aclocal-1.13: command not found make: *** [aclocal.m4] Error 需要安装升级到autoconf-2.65.tar.gz, automake-1.13.tar.gz两个文件 问题2:再编译xlslib时出现: In file included :…
listen函数仅仅由TCP服务器调用,它做2件事: 1)当socket函数创建一个套接字时,它被假设为一个主动套接字,也就是说,它是一个将调用connect发起连接的客户套接字 listen函数把一个未连接的套接字转换成一个被动套接字,指示内核应接受指向该套接字的连接请求 调用listen导致套接字从CLOSED状态转换到LISTEN状态 2)本函数的第二个参数规定了内核应该为相应套接字排队的最大连接个数 int listen ( int sockfd, int backlog); 本函数在调…