ref #include <algorithm> #include <iostream> #include <cstdio> #include <vector> using namespace std; int n, d[305], deg[1005]; vector<pair<int,int> > vec; int main(){ cin>>n; for(int i=1; i<=n; i++) scanf(&quo…

由于公司的业务在急速增长中,发现数据库服务器已经基本撑不住这么多并发.一方面,要求开发人员调整并发架构,利用缓存减少查询.一方面从数据库方面改善并发.数据库的并行度可设置如下: 1)cost threshold for parallelism:数据库引擎在编译的时候,预估执行计划的cost:若此cost消耗超过cost threshold for parallelism设置的值:sqlserver就会使用并行执行计划. 2)max degree of parallelism:并行执行计划最多能使…

我们今天主要向大家讲述的是SQL Server数据库中的max degree of parallelism参数,当 SQL Server 数据库在具N个微处理器或是 CPU 的计算机上运行时,它将为每个并行计划执行检测最佳并行度(即运行一个语句所使用的处理器数). 您可以使用 max degree of parallelism 选项来限制并行计划执行时所用的处理器数. 当 SQL Server数据库在具有多个微处理器或 CPU 的计算机上运行时,它将为每个并行计划执行检测最佳并行度(即运行一个语…

29.查询选修编号为"3-105"课程且成绩至少高于选修编号为"3-245"的同学的Cno.Sno和Degree,并按Degree从高到低次序排序. select tname,prof from teacher where depart = '计算机系' and prof not in  ( select prof from teacher where depart = '电子工程系') 30.查询选修编号为"3-105"且成绩高于选修编号为&q…

--并行查询 可以使用并行查询的情况 1. Full table scans, full partition scans, and fast full index scans 2. Index full and range scans, but only if the index is partitioned (at a given time, a partition can be accessed by a single slave process only; as a side effect…

如今要构建一个网络模型,网络中的每一个节点最多和 d 个节点相连接, 且信息的传播从随意一个节点到另外随意一个节点的"最短路径" (路径依照单位路径算)都不能超过 k,问网络中最多安排多少个节点. 这是<图论导引>里面看到的 diameter - degree 问题. 转化为图模型就是,一个无向图 G 中,节点最大度为 d,直径为 k,问 G 中的 n 上界. 书上要证明的是: n ≤ 1 + ( d - 1 ) * ( ( d - 1 )^k - 1 ) / ( d -…

主题链接:pid=2454">http://acm.hdu.edu.cn/showproblem.php?pid=2454 Problem Description Wang Haiyang is a strong and optimistic Chinese youngster. Although born and brought up in the northern inland city Harbin, he has deep love and yearns for the bound…

Misha and Palindrome Degree 题目链接:http://codeforces.com/problemset/problem/501/E 贪心 如果区间[L,R]满足条件,那么区间[L',R'](L'<=L,R<=R')必然满足条件,所以只需要找到满足条件的最小区间即可.首先去除两边相同的区间,剩下的区间为[l,r],因为区间[l,r]的两端不相同,所以要找的最小区间必然包含区间[l,r]的最左端或者最右端.观察到所选区间内的同种元素个数必需大于等于整个区间内同种元素的个…

题目: Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the sam…

Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the same de…

Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the same de…

Given a non-empty array of non-negative integers nums, the degreeof this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the same deg…

这是悦乐书的第294次更新,第312篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第162题(顺位题号是697).给定一个由正整数组成的非空数组,该数组的度数被定义为任意元素出现次数最多的次数.你的任务是找到一个(连续的)nums子数组的最小可能长度,它与nums具有相同的度数.例如: 输入:[1,2,2,3,1] 输出:2 说明:输入数组的度数为2,因为元素1和2都出现两次.在具有相同程度的子阵列中:[1,2,2,3,1],[1,2,2,3],[2,2,3,1],…

#include<cstdio> #include<cstring> #define INF 0x7fffffff using namespace std; ; inline int min(int a,int b){ return (a<b?a:b); } ],to[N*],c[N*],n; ; inline void add(int x,int y,int w){ edge_count++; to[edge_count]=y; c[edge_count]=w; next[…

Problem Description Wang Haiyang is a strong and optimistic Chinese youngster. Although born and brought up in the northern inland city Harbin, he has deep love and yearns for the boundless oceans. After graduation, he came to a coastal city and got…

Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the same de…

https://www.pcmag.com/commentary/343924/dont-dismiss-georgia-techs-6-600-online-masters-degree Don't Dismiss Georgia Tech's $6,600 Online Master's Degree I'm not about to let my ideological reservations foreclose my curiosity, especially given that s…

Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the same de…

1.题目描述 Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the…

Computer Science MS Degree MS Degree or Depth       45.00 Hours Required   http://scpd.stanford.edu/online-engineering-courses.jsp The Master of Science degree in Computer Science indicates two things to prospective employers. First, it guarantees th…

题目链接: http://codeforces.com/problemset/problem/7/D D. Palindrome Degree time limit per test1 secondmemory limit per test256 megabytes 问题描述 String s of length n is called k-palindrome, if it is a palindrome itself, and its prefix and suffix of length…

D. Palindrome Degree 题目连接: http://www.codeforces.com/contest/7/problem/D Description String s of length n is called k-palindrome, if it is a palindrome itself, and its prefix and suffix of length are (k - 1)-palindromes. By definition, any string (ev…

Accumulation Degree Time Limit: 5000MS   Memory Limit: 65536K Total Submissions:3151   Accepted: 783 Description Trees are an important component of the natural landscape because of their prevention of erosion and the provision of a specific ather-sh…

Problem Description 度度熊最近似乎在研究图论.给定一个有 N 个点 (vertex) 以及 M 条边 (edge) 的无向简单图 (undirected simple graph),此图中保证没有任何圈 (cycle) 存在. 现在你可以对此图依序进行以下的操作: 1. 移除至多 K 条边.2. 在保持此图是没有圈的无向简单图的条件下,自由的添加边至此图中. 请问最后此图中度数 (degree) 最大的点的度数可以多大呢?   Input 输入的第一行有一个正整数 T,代表接…

个人心得:这题就是要确定是否为回文串,朴素算法会超时,所以想到用哈希,哈希从左到右和从右到左的key值一样就一定是回文串, 那么问题来了,正向还能保证一遍遍历,逆向呢,卡住我了,后面发现网上大神的秦九韶算法用上了,厉害了. 关于哈希,这题用的是最简单的哈希思想,就是用M取合理的素数,这题取得是3, 然后正向就是 a+=a*M+ch[i].逆向用秦九韶可以在循环的时候算出来, 举个例子比如三个值1,2,3. 假如逆向开始 则 (((0+s[3])*M+s[2])*M+s[1]);化简就等于s[1]…

原题链接在这里:https://leetcode.com/problems/degree-of-an-array/description/ 题目: Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smalles…

［抄题］: Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the s…

Accumulation Degree Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 3425   Accepted: 859 题目链接:http://poj.org/problem?id=3585 Description: Trees are an important component of the natural landscape because of their prevention of erosion an…

思路其实非常简单,借用一下最大流求法即可...默认以1为根时,$f[x]$表示以$x$为根的子树最大流.转移的话分两种情况,一种由叶子转移,一种由正常孩子转移,判断一下即可.换根的时候由頂向下递推转移,很容易得知推法(不说了.唯一需要注意的换根时原来度数为1的根转移为另一个子节点时,需要特判. RE记录:???poj玄学RE,手写_min带强制同类型转换才AC,用自带的就RE.嘛,,不管了.代码奇丑无比. #include<iostream> #include<cstdio> #i…

题目链接:http://codeforces.com/contest/7/problem/D D. Palindrome Degree time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output String s of length n is called k-palindrome, if it is a palindrome itself…