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benefits of the initial division of labor are embodied in the "comparative advantage", because of their respective roles, each person can engage in their best work, coupled with the labor of simple labor to improve the proficiency and reduce the loss of labor, resulting in a significant increase in labour productivity. However, with the development of society, we find that some special forms of division of labor can not only improve productivity, but also some other benefits! To understand thes

airport, correspondingly. The next line containsMIntegersA1, bytes,A2, middle..., middle ,...,AM(1 digit ≤ DigitAILimit ≤ limit 1000 )-AIStandsFor the number of empty seats inI-Th plane before the ticket office starts selling tickets. The numbers in the lines are separated by a space. It is guaranteed that there are at leastNEmpty seats in total.Output Print two integers-the maximum and the minimum number of zlotys that the airport administration can earn, correspondingly.Sample test (s) Input

, only threads with the maximum number of users can access this page, while other access attempts are suspended. This page can only be accessed after a user exits. Summary: 1. The mutex function is very similar to that of the critical zone, but the mutex can be named, that is, it can be used across processes. Therefore, creating mutex requires more resources. Therefore, if you only use it within a process, using the critical section will bring speed advantages and reduce resource occupation. Bec

user's purchase and the promotion, which we can measure through the mutual information indicator. The difference between entropy and conditional entropy is the specific method of calculation. The user buys the Entropy e (T) minus the entropy E (t,x) that the user buys when the promotion occurs. The following formula is calculated: Entropy, conditional entropy and mutual information are the three key

Problem Description: A wine dealer has 5 barrels of wine and 1 barrels of beer, 6 barrels in capacity of 30 liters, 32 liters, 36 liters, 38 liters, 40 liters and 62 liters,And only sell the whole barrel of wine, not retail. The first customer bought 2 whole barrels of wine, and the second customer bought twice times as much wine as the first customer.So, how many liters of beer would it have been?Analysis: As the wine merchants only sell the whole barrel of wine, a few barrels of the capacity t

, online education, and so on. This kind of internet thinking not only avoids the piracy, but also promotes the competition between the app, really realizes "not only buys the dictionary, but buys the service". If the basic function of Xinhua dictionary is free and open, I believe more and more consumers will be willing to pay.In addition, "Xinhua dictionary" app to overcome the competition, but also need t

reload to failIn the spirit of inquiring, review the information summarized below, Apple's official description (IAP ticket verification) is as follows:Baidu translation is as follows:It says that the ticket in a JSON file, is an array containing all the application purchase receipts based on the application purchase transaction receipt data input Base-64, and it is possible to return an empty array (an empty array is actually still valid)When you add an application purchase receipt to a consum

Title demand: Chicken Weng A value of five, chicken mother a value of three, chickens three valuable one. Hundred money buys hundred chicken, asks the chicken Weng, the chicken mother, chickens each geometry?The first algorithm (also the most time-consuming, by the poor lift to find out): This method can be optimized to know the number of two chickens, the third one will knowpublic static void Hundred_money () {for (int i = 0; I for

What is reflection?The concept of reflection was proposed by Smith in 1982, which refers to the ability (introspection) of a program to access, detect, and modify its own state or behavior. The proposal of this concept soon triggered the research on the application of reflectivity in Computer science field. It is first used in the field of programming language design, and has achieved achievements in Lisp and object-oriented.Four functions that can be self-reflective, a built-in function of Pyth

, ...}, the user dimension of the purchase item I is characterized by 1. Further, the feature space of the item can be expressed as the number of times the user buys. The similarity W (u,v) is regarded as the weighted value of the corresponding dimension feature.ITEMCF formula:where S (I,k) represents the most similar to the item I k items set; N (U) represents a collection of objects that the user likes, W (I,j) represents the similarity between item

voidMain (string[] args) {Slowworker worker=NewSlowworker (); //The main thread simulates the person who buys the book, the DoWork () method simulates the bookstore owner's behavior! System.out.println ("Boss, I want to buy books" +Newjava.util.Date ()); Worker.dowork (); System.out.println ("... I can do something when the boss is looking for a book! ...."); System.out.println ("The book has been bought" +Newjava.util.Date ()); System.exit (0

efforts across platforms, but there are still many hurdles. Skype, however, does not have the problem, as Skype for free services can run on Apple, Linux and Windows computers, as well as mobile platforms such as Android and iphone, and even run on TV. Microsoft is also hoping to keep Skype away from Google's "claws" by buying Skype, not just to benefit from it. If Google buys Skype, it's a big blow for Microsoft. Think about it, if Google

seller sent the unknown link. Beware of swindlers with "low price", "free shipping" to defraud the trust click, the use of unknown links hidden in the net shopping trojan in the background to tamper with the payment page and the amount of money stolen account. For the myth Five, pointed out: mobile phone payment to recognize the security of the major web site safety signs, such as: Taobao payment URL before a triangle inside is a "support" word. Some mobile phone users think that the use of ne

through another station. This causes more electricity expense per passenger and creates unwanted crowd in the stations. So the government would prefer does such tracks. /td> Figure 1:the figure above shows 6 places. It also shows all possible triangular tracks (not necessarily valid site) by connecting them. The green track was one invalid track site and on the other hand the red track was one valid track site. There is five other valid track sites in the abov

then the supermarket buys all of it and doesn't think about one thing at a time, var frag=document.createdocumentfragment (); for (Var i=0;iFrag.appendchild (Myarr[i]); Add all the rows in the array to the document fragment } Dbody.appendchild (Frag);//Add all the lines in the document fragment to the body This completes a sort, and then there is a customcompare function, a custom sort method that serves as a parameter to the sort met

script to randomly insert a set of data into the collection, each of which is a record of how much money the person spends and buys. The specific script test1.js is as follows: Next we insert specific data into the database by executing the script at the console, and the following instructions are executed: After execution, the data is viewed through the Mongovue, as shown below, and is inserted into the collection: Nex

Frequent patterns mining (frequent pattern Mining) is a kind of mining commonly used in data mining, which is a frequent pattern mining algorithm called Apriori. First look at what is called frequent mode. ~ is the pattern that often comes together, the "pattern" here is a more abstract concept, we look at a specific example, that is the famous "beer and diapers" story ~ said that in the United States have babies in the family, is usually the mother at home to look after the baby, the young fath

less satisfaction they can get from each additional input. This is the principle of diminishing marginal utility. 　　The conscious use of "marginal principles" in daily household spending will help us save a lot of money. Most people do not calculate, only by psychological feeling, money disorderly flower, result in expense waste.　　Originally 100 yuan can eat a meal, the result ate 300 yuan, also caused the blood pressure to rise, stomach abdominal distension; originally 100,000 yuan to buy a ca

The independent graphics card has a very troublesome place is the fan easy to accumulate the dust, the suggestion buys the video card to buy the wind to be less cold, buys back to use several months to accumulate the dust.Dust Removal steps:1. Unplug the monitor plug2. Remove the video card from the motherboard3, at the bottom of the radiator red plastic cover layer of 4 long screws down4, Unlock the radiat

understanding the information process, did not quickly and clearly grasp the details of the reason for the purchase. We can try to analyze the core key of the title: 198 yuan, the original price of 785 yuan, mark the fashion ktv,3 hours, private rooms, singing packages, prime time, 100 yuan, supermarket coupons, evening vouchers, popcorn 1 barrels If we redesign the title, how would you design it? Pm: Obviously, this group buys the product desi