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[2] [medium difficulty] noip simulation competition intelligence brother's salary

Cong GE's salary (Money/money. In/money. out) Time limit 1000 ms memory 256 MBDescription Lwher. With M settlement time, Cong Ge can freely arrange the time, that is to say, when to get the money, what the boss says is not, Cong GE has the right to speak! (Because Cong Ge is a local tyrant and he is the boss of the boss, do you think the boss dares to assign task

How to learn Python?

Liberated Jiang Ge 01 to the horizon The liberated Jiang Ge 02 Manor-House of doubts Liberated Jiang ge 03 the so-called Iraqis Liberated Jiang ge 04 picking Liberated Jiang ge 05 black-and-black Butler The liberated Jiang

Two-year flash

This log is written on February 28. It was several days before the old team members left. Today, I am still heartless and joking with the captain. This is the registered hangdian number. It should be my time to join the team. I think it's getting closer and closer to my retirement days. The sadness of parting always comes to your mind unconsciously, filled with any corner of your mind. The 2009 old players brought our team to a new height. They played regional invitational competitions, partici

PC2 diary-the first day of my career

the normal pc2team and compile it to the desktop; Problems: (1). the shortcut of pc2team put in the old brother cannot be opened, and the configuration file of pc2team has permission problems (that is, it cannot be opened ); (2) It seems that several simple steps would take a lot of time to get one of more than 20 computers, and the full brother on ubuntu had an automatic cleaning program, that is to say, after the above steps are completed, if you re-boot it, you have to re-do it, so I am tryi

Python Quick Tutorials

applications in the web, whether as a server or as a crawler. Python's own syntax is simple, highly readable, and has powerful scripting capabilities. These allow Python developers to quickly develop excellent network products. Python network 01 Raw python server Python Network python server evolution Python Web applications also require knowledge about network protocols. Refer to: Protocol ForestThe liberated Jiang GEDjango is one of Python's most representative network frameworks. With Django

Basic Python Tutorials

random numbers (Math package, random package)Python standard library 13 circulator (Itertools)Python standard library 14 database (SQLITE3)The main difficulty of learning the Python standard library is that it requires a certain amount of basic knowledge in other areas. Refer to:Linux Concepts and SystemsThe following are network-related content in the Python standard library. Python has many applications in the web, whether as a server or as a crawler. Python's own syntax is simple, highly rea

Logical judgments in 69.shell scripts, file directory attribute judgments, if special usages, case judgments

Tags: case judge logical judgment file directory attribute in shell script determine if special usageI. Logical judgments in the shell Format 1:if condition; Then statement; Fia=2if [ $a -ge 2 ];then echo ">=2";fi Format 2:if condition; Then statement; else statement; Fia=1if [ $a -ge 2 ];then echo ">=2";else echo " Format 3:if ...; Then ...; Elif ...; Then ...; else ...; Fia=6if [ $a -

Logical judgment in the shell, if judgment file, directory attribute, some special usage of if judgment

[ ! -f /tmp/lalal ]then echo "/tmp/lalal not exist."exitfin=`wc -l /tmp/lalal`#如果值是空的退出if [ -z "$n" ]then echo errorexit#如果有值就打印出来elif [ -n "$n" ]thenecho $nfi[[emailprotected] shell]# cat /tmp/lalal dadhajdahdajhj127676adadahj[[emailprotected] shell]# sh if4.sh 4 /tmp/lalal If Grep-wq ' user1 ' 1.txt; Then what happens if the 1.txt contains a ' user1 ' row?-w表示匹配的是一个单词-q是不打印grep匹配的内容Case judgment in the shell Formatcase 变量名 in value1) command ;; value2) command ;; *

Logical judgment File directory attribute in shell script determine if special usage case judgment

Label:... Requirement write root must be judged by an echo capture variable conditionI. Logical judgments in shell scriptsIn the shell script, many will logically judge, judge a certain value, judge a file, or a directory, we do some action against the result of the judgment, if there is no judgment, there is no way to do some operationsFormat 1:if condition; then statement; fiExample:[[Email protected] ~]# if [$a-ge 3]//branch Write it like this

"Classmate, I am a senior" full text _ inspirational article

Repentance Inspirational Post Popular: No study no love no travel lead resonance "Alas, soon graduated," the Spring March, the graduation season is coming, with all things to revive the growth of not only the senior students, but also regrets even regret. Recently, Hebei University of Science and Technology senior students Liu Nio in the school posted continuously, feeling that their work, although the feelings are available, but still feel "the pursuit of serious life", only because the univer

Logical judgments in shell scripts, file directory attribute judgments, if special usage, case judgments

and execute.[Email protected] shell]# sh-x if3.sh A=3 ' [' 3-GT 4 '] ' ' [' 3-gt 6 '] ' Echo NookNookAs can be seen, he carried out two logical judgments. Logical judgment expression: if [$a-gt $b]; If [$a-lt 5]; If [$b-eq 10] etc.-GT (greater than >);-lt (less than -ge (greater than or equal to >=);-le (less than or equal to -eq (equals =);-ne (Not equal to! =)Note that there are spaces everywhere.If you want to use symbols

Decorator usage in Python and python

()'Foo ()Print foo. _ name __First, pay attention to the row 5th. If you comment out this line, foo. _ name _ will be 'wrapper '. In addition, I believe you have noticed that this decorator has a parameter. In fact, there are two other optional parameters. Attribute names in assigned are replaced by values, while attribute names in updated are merged by update, you can obtain the default values by viewing the source code of functools. For this decorator, it is equivalent to wrapper = functools.

MySQL-5.6.13 unzip (zip) assembly configuration tutorial

MySQL-5.6.13 unzip version (zip version) Installation configuration tutorial [Download MySQL5.6.13] From MySQL official website mysql.com find MySQLCommunityServer5.6.13 for dev. mysql. comdownloadsmysql, here you can choose the operating system platform. Hong Ge chose Microsoft Windows. There are three MySQL-5.6.13 unzip version (zip version) Installation configuration tutorial [Download MySQL 5.6.13] From MySQL official website mysql.com find MySQL

Usage of the Python set collection

Set Set: is a set of unordered, non-repeatable collectionsCreation of 1.setse={"ww3", 23432,"name"}# Create an empty collection Se1=set ()2. Convert to a collectionli=[23,56,23,44]se=set (li)print(se)# output: {56, 44, 23} Common methods of 3.setAdd (self, *args, **kwargs): adds an element to the collection, and if the collection already has this element, it is not added for long# element not added in collection case se={23,54,11,788}se.addprint(se)# output: {one, 788, wu, wu, si} # a situation

Lagrange Multiplier method and Kkt condition

$\mu_{k}\ge{0},g_{k} (x) \le{0}$$\because \left.\begin{matrix}\mu_{k}\ge{0}\\g_{k} (x) \le{0}\end{matrix}\right\}$=>$\mu{g (x)}\le{0}$$\therefore$ \begin{equation}\max_{\mu}l (X,\MU) =f (x) \label{a}\end{equation}$\therefore$\begin{equation}\min_{x}f (x) =\min_{x}\max_{\mu}l (X,\MU) \label{firsthalf}\end{equation}$\max_{\mu}\min_{x}l (X,\MU) =\max_{\mu}[\min_{x}f (x) +\min_{x}\mu{g (x)}]=\max_{\mu}\min_{x}

The relationship between convergence exponent and upper exponential density

Let $A =\{a_1$$\overline{\varepsilon} (A) =\limsup\limits_{n\to \infty}\frac{\log| a\cap\{1,2,\cdots,n\}|} {\log n}.$$We can similarly define the lower exponential density.We have the following result claimed in gaps and the exponent of convergence for an integer sequence.Main Result: $$\overline{\varepsilon} (a) =\tau (a) =\limsup\limits_{n\to \infty}\frac{\log n}{\log a_n}.$$Proof. Let $\overline{\varepsilon} (A) $$\limsup\limits_{n\to \infty}\frac{\log n}{\log a_n}\

Juniper SRX Firewall NAT Configuration

First, the basic operating instructions:1, Equipment Recovery Factoryroot# Load Factory-defaultroot# Set System Root-authentication Plain-text-passwordroot# CommitRoot> Request System reboot2. Basic Configuration2.1 Configuring host namesroot# Set System Host-name SRX14002.2 Setting the time zone[Email protected]# Set System Time-zoneasia/shanghai2.3 Setting Time[Email protected]# run Set Date 201508011549.212.4 setting up DNS[Email protected]# Set System name-server202.l06.0.202.5 Setting the

Java program entry 50 questions analysis: 003

【Program3] Question: print out all the "Daffodils". The so-called "Daffodils" refers to a three-digit number.CubeAnd equals to the number itself. For example, 153 is a "Daffodils" because 153 = the power of 1 + the power of 5 + the power of 3. Program Analysis: first, the three-digit number 100-999. Second, you must calculate the number of each digit and the number equal to this number. The public int Ge (int n) can be obtained ); // obtain the numb

Script Practice--001

Write scripts so that the/ETC/RC.D/RC3.D directory has multiple files starting with K and starting with S, output in the following formatK The beginning of the back plus stops starts with the back plus startThe code is as follows:[[email protected] ~]# cat t1.sh#!/bin/bashfor file in $ (ls/etc/rc.d/rc3.d/);d OIF ["$ (echo $file |cut-c 1)" = = "S"];thenif [$ (echo $file |wc-c)-ge];thenecho-e "$file start" elif [$ (echo $file |wc-c)-

Decomposition time limit for numbers: Ms | Memory limit: 65535 KB Difficulty: 1

Decomposition time limit for the number:MS | Memory limit:65535 KB Difficulty:1 Describe Your task is to find a minimum positive integer q so that the product of the Q's number of members equals N. Input Up to 450 sets of test data. The data ends with EOF. Enter an integer N (0≤n≤400). Output Output Q, if Q does not exist then output −1. Sample input 105 Sample

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