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### Hdu 5895 mathematician QSC exponential cyclic section + Matrix fast Power

Mathematician QSCTime limit:2000/1000 MS (java/others) Memory limit:131072/131072 K (java/others)Problem DESCRIPTIONQSC dream of becoming a mathematician, he believes that everything in this world have a mathematical law .Through unremitting efforts, one day he finally found the QSC sequence, it's a very magical sequence, can be calculated B Y a series of calculations to predict the results of a course of a semester of a student.This sequence was such like that, first of all,F(0)=0,F(1)=1,F(N)=f

### poj1904 binary graph matching + strong connected components

http://poj.org/problem?id=1904DescriptionOnce upon a time there lived a king and he had N sons. And there were N beautiful girls in the kingdom and the king knew on each of his sons which of those girls he does like. The sons of the king were young and light-headed, so it is possible for a son to like several girls.So the King asked his wizard to find for each of his sons the girl he liked, so that he could marry her. And the King ' s wizard did it--for each son the girl that he could marry is c

### The origin of Redis port 6379

Beautiful town Building, a little story is worth remembering.6379 Merz The corresponding number on the phone keypad, and Merz was taken from the Italian girl Alessia Merz's name.Merz has long been synonymous with Antirez and his friends as stupidity.NND It is too much to belittle him!!Appendix:how to remember the Redis port numberToday on Twitter I saw a tweet related to the ability to remember the Redis port number. There is a trick, the Redis port number, 6379, isMERZAt the phone keyboard.Is i

### Customizing the event distribution mechanism for View Series view

. Mmotiontarget = null; }//If we ' re disallowing intercept or if we ' re allowing and we didn ' t//intercept// First go Onintercepttouchevent method, judge whether intercept//not intercept, will enter if inside, do event distribution, mainly call sub view of Dispatchtoucheventif (disallowintercept | |!onintercepttouchevent (EV)) {//Reset this event ' s action (just to protect ourse lves) ev.setaction (Motionev

### Introduction to Databases (Experiment II) database and table operations __ Database

*/-----------------------------------------------------------3) Insert SC data ----------------------------INSERT INTO SC values (' 200215121 ', ' 1 ', 92)/* Inserts a tuple into the table SC */INSERT INTO SC values (' 200215121 ', ' 2 ', 85)/* Insert a tuple into the table SC */INSERT INTO SC values (' 200215121 ', ' 3 ', 88)/* Inserts a tuple into the table SC */INSERT INTO SC values (' 200215122 ', ' 2 ', 90)/* Inserts a tuple into the table SC */INSERT INTO SC values (' 200215122 ', ' 3 ',

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### SQL Row to Column

: delimiter CREATE PROCEDURE sp_count () BEGIN #课程名称 DECLARE course_n VARCHAR (20); #所有课程数量 DECLARE Count INT; #计数器 DECLARE i INT DEFAULT 0; #拼接SQL字符串 SET @s = ' SELECT name '; SET count = (SELECT count (distinct course) from grade); While I Method Analysis:The first method uses table joins.The second uses a grouping, which is processed separately for each grouping.The third uses the stored procedure, is actually the second method dynamic, first calculates the quantity of all courses, then carr

### A comprehensive application of hibernate in relation mapping

class score {private Integer ID; Private String score; Private Student Student; Private Course Course; @ManyToOne (Cascade={cascadetype.all})//Configure cascading Operations @JoinColumn (name= "student_id") public student Getstudent () {RE Turn student; } public void Setstudent (Student Student) {this.student = Student; } @ManyToOne (Cascade={cascadetype.all}) @JoinColumn (name= "course_id") Public course GetCourse () {return C Ourse

### Harvard University Open Class "Positive Psychology 1504" study notes-relationship_conflict

. Without rituals, in our modern world, the important and yet not urgent activities a take. 4 being known rather than validated If We are known by the other partner, then means we must open up, we must reveal, we need to share of ourse Lves-not just the wonderful and the amazing and the terrific things, also the things that sometimes we are don't that pro UD of, our weaknesses perhaps, something so may is we ' re ashamed of. But It takes time, it isn'

### Introduction to Databases (Experiment II) database and table operations __ Database

the table course to insert SC data ----------------------------inserts into SC values (' 200215121 ', ' 1 ', 92)/* Insert a tuple into the table SC/INSERT INTO SC values (' 200215121 ', ' 2 ', 85) * * Insert a tuple into the table SC/INSERT INTO SC values (' 200215121 ', ' 3 ', 88)/* Insert a tuple into the table SC/INSERT INTO SC values (' 200215122 ', ' 2 ', 90)/* Insert a tuple into the table SC */INSERT INTO SC values (' 200215122 ', ' 3 ', 80)/* Insert a tuple into the table SC * *--------

### SQL Scale Table Conversion

Horizontal Table Conversion Vertical table:CREATE Table score (username varchar (ten), Chinese int, math int, physics int); INSERT into score (username , Chinese, math, physics) VALUES (' Kay ', 74,83,93), INSERT into score (username, Chinese, math, physics) VALUES (' Jim ', 75, 84,94); INSERT into score (username, Chinese, math, physics) VALUES (' Lily ', 86,49,91); COMMIT; SELECT * from score;650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/59/2A/wKioL1TJmWTDimcKAABhyIsoWbg511.jpg "t

### A design pattern of alternate federated primary Key in Hibernate

myeclipse Persistence Tools */@Entity @table (name = "Score", Catalog = "Hibernate") public class score implements JA va.io.Serializable {//fields/** * */private static final long serialversionuid = 1l;private Scoreid id;private Course Co Urse;private Student student;//constructors/** default constructor */public score () {}/** minimal constructor */public Sc Ore (Scoreid ID) {this.id = ID;} /** Full constructor */public score (Scoreid ID, Course Course, Student Student) {this.id = Id;this.cour

### Shelve of data storage for Students ' course selection system

El in Course.all_course_list: #遍历课程类的全部课程列表 print (EL) def Choice_c Ourse: #选课的方法 While 1:course = input (' Enter the course you want to select (press Q to exit): ') if course.upper () = = ' Q ': Break If course in Course.all_course_list: #所选课程在课程类的全部课程列表中, optional lessons available If course in Self.course_list:print (' This course has been selected, cannot be selected repeatedly ') Else: Self.course_list.a

### POJ3889 Fractal Streets

. At all corner of a cup a driveway (with mailbox) are placed for a house, with a simple successive numbering. The house in the top left corner have number 1, and the distance between the adjacent houses is 10m.The situation is shown graphically in Figure 2. As can see the Fractal Streets concept successfully eliminates the need for boring street grids and while still requiring Very little effort from our bureaucrats.As a token of their gratitude, several mayors has offered Chris a house in one

### POJ 1904 King ' s Quest (strong connectivity)

Language:DefaultKing ' s Quest Time Limit: 15000MS Memory Limit: 65536K Total Submissions: 7635 Accepted: 2769 Case Time Limit: 2000MS DescriptionOnce upon a time there lived a king and he had N sons. And there were N beautiful girls in the kingdom and the king knew on each of his sons which of those girls he does like. The sons of the king were young

### Hbase Shell Details

,stoprow to scan multiple row. For example: Scan ' User_test ', {COLUMNS = ' info:username ', LIMIT =>10, startrow = ' test ', stoprow=> ' test2 '} B. View Table " Scores all data in the column family "course". HBase (main):012:0> scan ' scores ', {COLUMN = ' grad '} hbase (main):012:0> scan ' scores ', {column=> ' Course:mat H '} hbase (main):012:0> scan ' scores ', {COLUMNS = ' course '} hbase (main):012:0> scan ' scores ', {COLUMNS = ' C Ourse '}7)

### asp.net mvc Getting Started with form authentication

in a sessions variable to use it further. Create A authentication ticket for the user (an encrypted cookie). We can have this persistent or non persistent. Facilitate the user/roles extraction using the authentication ticket. Use the ' user/roles found in ' The last step and create a Principal using this so this asp.net Forms authentication mech Anism can use this data. Now we'll have the membership API does all of things for us and how we can implement all of these steps

### Python reads the JSON file and inserts the data into the MongoDB method _python

This article describes how Python reads a JSON file and inserts data into MongoDB. Share to everyone for your reference. The implementation method is as follows: #coding =utf-8 import sunburnt import urllib from Pymongo import Connection from Bson.objectid import objectid import Logg ing from datetime import datetime import JSON to time import mktime from Feedparser import _parse_date as Parse_date Imp ORT time Import sys import getopt import configparser args = sys.argv[1:] optlist, args

### MySQL base + master-slave replication, read/write separation, high availability principle

; ' 1988-1-2 ' and date 18) Modify Data Update C set age= id=2; update c set name= ' Flower ', age=21 , sex= ' female ' where id=2Views: A view is a result set that is returned after a SELECT statement executes. So when we create the view, the main work falls on the creation of this SQL query statement.Use occasions: Permission control, do not want users to access some of the table contains sensitive information columns, such as salary ... The key information comes from a number of complex re

### Basic operation of SQLite database

values (1, 2, ' languages '); select * FROM students inner JOIN c Ourse on students.c_id=course.c_id;---------------Cross Connect-----------------select * from Students,course;----------Left outer connection Failed to match left base, right null--, no right connection------------select * FROM students ieft outer join teacher on students.c_id=teacher.c_id; nbsp;--------------------aliases-similar to table names. The same column name, from + original a

### MySQL Exercises-2016.12.16

Qiang ' and SC. ' Sno ' =st ' Sno ' and SC. ' CNO ' =cr.cno (3) to retrieve the student number (CNO) of not less than 3 courses sno;#检索学号select Sno from SCSelect Sno from SC GROUP by SNO have COUNT (*) >= 3 (4) Retrieves the name of the student taking all courses (SNAME) #错误写法: SELECT SNAME from student WHERE Sno In (select Sno from SC GROUP by SNO have COUNT (*) >= 3) #正确写法: Select sname from student WHERE not EXISTS (SELECT * F ROM course where not EXISTS (SELECT * from SC WHERE sc.sno=studen

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