1369 - Answering Queries   PDF (English) Statistics Forum Time Limit: 3 second(s) Memory Limit: 32 MB The problem you need to solve here is pretty simple. You are give a function f(A, n), where A is an array of integers and n is the number of element…

1369 - Answering Queries    PDF (English) Statistics Forum Time Limit: 3 second(s) Memory Limit: 32 MB The problem you need to solve here is pretty simple. You are give a function f(A, n), where A is an array of integers and n is the number of elemen…

链接: https://vjudge.net/problem/LightOJ-1369 题意: The problem you need to solve here is pretty simple. You are give a function f(A, n), where A is an array of integers and n is the number of elements in the array. f(A, n) is defined as follows: long lo…

题目链接:https://vjudge.net/contest/28079#problem/P 题目大意:给你数组A[]以及如下所示的函数f: long long f( int A[], int n ) { // n = size of A long long sum = 0; for( int i = 0; i < n; i++ ) for( int j = i + 1; j < n; j++ ) sum += A[i] - A[j]; return sum; } 有两个操作:0  x  v…

You are given a tree with N nodes. The tree nodes are numbered from 1 to N and have colors C1, C2,. . . , CN initially. You have to handle M instructions on the tree of the following forms:• 0 u c: Change the color of node u to c.• 1 u v: Output the…

SerDe * 按行存储 * 按列存储 file_format: : | SEQUENCEFILE 序列化(行存储) | TEXTFILE 文本格式(行存储)- (Default, depending on hive.default.fileformat configuration) | RCFILE 列式存储文件(列存储)- (Note: Available in Hive 0.6.0 and later) | ORC 常用 优化列式存储文件(列存储)- (Note: Available in…

1 .背景 BIND从文本文件中获取数据,这样容易因为编辑错误出现问题. BIND需要将数据加载到内存中,如果域或者记录较多,会消耗大量的内存. BIND启动时解析Zone文件,对于一个记录较多的DNS来说,会耽误更多的时间. 如果近修改一条记录,那么要重新加载或者重启BIND才能生效,那么需要时间,可能会影响客户端查询. BIND reads DNS data from text files. It is very easy to make a mistake when editing a f…

Open mDNS Scanning Project 来自:https://mdns.shadowserver.org/ If you are looking at this page, then more than likely, you noticed a scan coming from this server across your network and/or poking at Multicast DNS (mDNS). The Shadowserver Foundation is…

题意 : 给你N个数以及M个操作,操作分两类,第一种输入 "0 l r" 表示将区间[l,r]里的每个数都开根号.第二种输入"1 l r",表示查询区间[l,r]里所有数的和. 分析 : 不难想到用线段树,但是这里的线段树开根操作的更新很明显不能跟加减操作那样子通过Lazy Tag来实现,那么最笨的方法就是一直更新到叶子节点,不过这也就失去了线段树的高效性,每一次操作都更新到叶子节点的话会超时,此时来想想有没有什么规律可以减少操作的复杂度,细想就会发现在有限次的开根…

1557. Can you answer these queries II Problem code: GSS2 Being a completist and a simplist, kid Yang Zhe cannot solve but get Wrong Answer from most of the OI problems. And he refuse to write two program of same kind at all. So he always failes in co…