【做题】CF239E. k-d-sequence——线段树
首先,容易得到判断一个子串为“good k-d sequence”的方法:子串中没有重复元素,且所有元素模d相等。记mx为除以d的最大值,mn为除以d的最小值,则\(mx-mn<=r-l+k\)。然后,我们对于每一段极大的元素同模的子串,处理\(d=1\)的情况。显然,我们需要枚举一个端点。这...
关于Hibernate的sequence diagram
【UVA】1594 Ducci Sequence(纯模拟)
题目题目 分析真的快疯了,中午交了一题WA了好久,最后发现最后一个数据不能加\n,于是这次学乖了,最后一组不输出\n,于是WA了好几发,最后从Udebug发现最后一组是要输出的!!! 代码#include <cstdio>#include <cmath>#include ...
D - Replace To Make Regular Bracket Sequence
You are given string s consists of opening and closing brackets of four kinds <>, {}, [], (). There are two types of brackets: opening and closi...
Codeforces Beta Round #5 C. Longest Regular Bracket Sequence 栈/dp
C. Longest Regular Bracket SequenceTime Limit: 20 SecMemory Limit: 256 MB题目连接http://codeforces.com/problemset/problem/5/CDescriptionThis is yet anothe...
Replace To Make Regular Bracket Sequence
Replace To Make Regular Bracket SequenceYou are given string s consists of opening and closing brackets of four kinds <>, {}, [], (). There are ...
Codeforces Round #529 (Div. 3) E. Almost Regular Bracket Sequence(思维)
传送门题意:给你一个只包含 '(' 和 ')' 的长度为 n 字符序列s;给出一个操作:将第 i 个位置的字符反转('(' ')' 互换);问有多少位置反转后,可以使得字符串 s 变为"Regular Bracket Sequence";输出满足条件的位置的个数;题解:令 '(' = 1 , ')'...
Codeforces Round #529 (Div. 3) E. Almost Regular Bracket Sequence (思维,模拟栈)
题意:给你一串括号,每次仅可以修改一个位置,问有多少位置仅修改一次后所有括号合法.题解:我们用栈来将这串括号进行匹配,每成功匹配一对就将它们消去,因为题目要求仅修改一处使得所有括号合法,所以栈中最后一定会有两个括号剩余,并且这两个括号要么是\(((\)要么是\())\),\()(\)是无论如何都不合...
Oracle中sequence的使用方法
在Oracle数据库中,sequence等同于序列号,每次取的时候sequence会自动增加,一般会作用于需要按序列号排序的地方。1、Create Sequence(注释:你需要有CREATE SEQUENCE或CREATE ANY SEQUENCE权限)CREATE SEQUENCE emp_se...
oracle中查看某个用户名下所有的表以及sequence
select table_name from all_tables where owner =upper('jdfp') ;此处查的是tieba这个用户表空间下的所有表名--------------------------------------------------
The Kernel Newbie Corner: Kernel Debugging with proc "Sequence" Files--Part 2
转载:https://www.linux.com/learn/linux-career-center/39972-kernel-debugging-with-proc-qsequenceq-files-part-2-of-3This week, we'll pick up where we left...
2016暑假多校联合---Rikka with Sequence (线段树)
2016暑假多校联合---Rikka with Sequence (线段树)Problem DescriptionAs we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka s...
HDU 5950 - Recursive sequence - [矩阵快速幂加速递推][2016ACM/ICPC亚洲区沈阳站 Problem C]
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5950Farmer John likes to play mathematics games with his N cows. Recently, they are attracted by recurs...
课程五(Sequence Models),第一 周(Recurrent Neural Networks) —— 1.Programming assignments:Building a recurrent neural network - step by step
Building your Recurrent Neural Network - Step by StepWelcome to Course 5's first assignment! In this assignment, you will implement your first Recurre...
iOS解析JSON字符串报错Error Domain=NSCocoaErrorDomain Code=3840 "Invalid escape sequence around character 586."
将服务器返回的JSON string转化成字典时报错:Error Domain=NSCocoaErrorDomain Code=3840 "Invalid escape sequence around character 586."仔细查找后在原来解析的基础上将"\"字符替换成""或"\\"后,解析...
Verify Preorder/Inorder/Postorder Sequence in Binary Search Tree
Verify Preorder Sequence in Binary Search Tree\Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary sea...
【HDOJ】【3415】Max Sum of Max-K-sub-sequence
DP/单调队列优化呃……环形链求最大k子段和。首先拆环为链求前缀和……然后单调队列吧<_<,裸题没啥好说的……WA:为毛手写队列就会挂,必须用STL的deque?(写挂自己弱……sigh) //HDOJ 3415 #include<queue> #include<cma...
ORACLE Sequence 自增长
Sequence是数据库系统按照一定规则自动增加的数字序列。这个序列一般作为代理主键(因为不会重复),没有其他任何意义。Sequence是数据库系统的特性,有的数据库有Sequence,有的没有。比如Oracle、DB2、PostgreSQL数据库有Sequence,MySQL、SQL Server...
Codeforces 486E LIS of Sequence 题解
题目大意:一个序列,问其中每一个元素是否为所有最长上升子序列中的元素或是几个但不是所有最长上升子序列中的元素或一个最长上升子序列都不是。思路:求以每一个元素为开头和结尾的最长上升子序列长度,若两者相加比最长上升子序列长度+1小,则一个也不是;否则若有另一元素与它的两个值完全相同,则不是所有;否则在所...
Codeforces Round #353 (Div. 2) A. Infinite Sequence 水题
A. Infinite Sequence题目连接:http://www.codeforces.com/contest/675/problem/ADescriptionVasya likes everything infinite. Now he is studying the properties ...