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_1$ will be "bin volume and less than 5/6" nature contradictions;Second, $ C ' In addition, $c ' > 1-c (b_1) $, otherwise $c ' $ will be put into $B _1$.Then there may only be $\frac{1}{6} \le C ' Assuming that the first fit gets the scheme, the weight of the bin is less than 1 in order $B _1, b_2, \dots, b_k$, then $$\begin{matrix} W (b_1) + W (b_2) + \dots + W (b_{ K-2}) + W (b_{k-1}) + W (b_k) \ \ = V (b_1) + (\frac{6}{5}c (b_1) + V (b_2)) + \do

Deep understanding of Java Virtual Machine-Chapter 2-thread security and lock optimization, and Chapter 4 Chapter 4 thread security and lock Optimization Thread Security Thread security in java 1 is unchangeable. The Immutable object must be thread-safe. 2. Absolute thread security: no matter what the runtime en

The layer-2 switching technology is mature. The layer-2 switch is a data link layer device that can identify the MAC address information in the data packet and forward it according to the MAC address, the MAC addresses and corresponding ports are recorded in an internal address table. The specific workflow is as follows: (1) When the switch receives a packet from a port, it first reads the source MAC addres

We are all familiar with multiplication of plural numbers: If $ Z_1 = x_1 + iy_1, Z_2 = X_2 + iy_2 $ is two plural numbers, then $ | z_1z_2 | = | Z_1 | \ cdot | z_2 | $. \ [(X_1 ^ 2 + Y_1 ^ 2) (X_2 ^ 2 + Y_2 ^ 2) = (x_1x_2-y_1y_2) ^ 2 + (x_1y_2 + x_2y_1) ^

ASP. net mvc 4 practice 2: The first MVC application (below ), In the previous article, VS helped us create a simple operation page and implement the CRUD function. However, this article tries to analyze how it is implemented. 1. View (take Create view as an example ):1 @ * Note: in this section, the left and right sides are enclosed in the comment * @ 2 3 @ *. T

Step 2: Use the spark cache mechanism to observe the Efficiency Improvement Based on the above content, we are executing the following statement: 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M00/49/AF/wKioL1QY8tmiGO95AAG6MKKe5vI885.jpg "style =" float: none; "Title =" 1.png" alt = "wkiol1qy8tmigo95aag6mkke5vi885.jpg"/> 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M00/49/AD/wKiom1QY8sLjnB_KAAHXbDhuD_I646.jpg "style =" float

07. C # Brief description of generic restrictions and empty types (Chapter 3, chapter 2-Chapter 4, Chapter 3.5 ), While writing articles, I am also learning. I don't have a good understanding of many statements in the book. Read a book and digest it !!! The three chapters are about generics. Finally, let's write the limitations on generics. for the end of this chapter, one end, one begin. See the following

Basic Python syntax [2]: getting started with python to proficient in [4], and getting started with python to proficient The Python basic syntax of the previous blog has been introduced in [2] as a beginner in python. The basic syntax of the previous blog is only a preview version, the purpose is to give you a rough understanding of the basic syntax of python. Th

C language computing 1/1-1/2 + 1/3-1/4 + 1/5-... + 1/99-1/100Calculate 1/1-1/2 + 1/3-1/4 + 1/5-... + 1/99-1/100. Method 1: Calculate 1/1-1/2 + 1/3-1/4 + 1/5-... + 1/99-1/100 # Include Method

At the end of the article, let's go back and add a contact table. Our last tab contains a frompanel and a fieldset: // We 've added a third and final item to our tab panel-scroll down to see it Ext. Application ({ Name: 'sencha ', Launch :(){ Ext. Create ("Ext. tabpanel ",{ Fullscreen: True, Tabbarposition: 'bottom ', Items :[ { Title: 'home ', Iconcls: 'home ', CLS: 'home ', HTML :[ ' ', ' " "To use tabs, lists and forms to create a simple app ' ]. Join ("") }, { Xtype: 'LIST ', Title: 'blog

How is form form submitted in MVC? How are controller controllers received?1. cshtml Page Form submission(1) The submission of the ordinary way(2) Special way to submit2, the controller handles the form data four kinds of methodsMethod 1: Use the traditional request dataMethod 2:action parameter name corresponds to table cell name value one by oneMethod 3: Read from the MVC encapsulated formcollection conta

1 #!/usr/bin/env Pyhton2 #-*-coding:utf-8-*-3 #all numbers of 1-2+3-4+5...99 and (self-written)4 """5 give X a value of 0, assign Y to 0,while true, loop to start6 if the remainder of X and 2 equals 0, then X is an even number, and y assigns equal to Y minus x .7 Otherwise, x is an odd number, and Y's assignment equals

"Defend Radish 2 4" 1, the following figure, first put a bottle and upgrade. 2, two stars in the middle, one will then turret. 3, the following figure, the above one emits stars, then and bottles. 4, the stars, and then the bottle rose to the top, increase the attack. 5, the final map is as follows. 6,

Scan8 is hard to understand. The answer is as follows: Static const int x264_scan8 [16 + 2*4] ={/* Luma */4 + 1*8, 5 + 1*8, 4 + 2*8, 5 + 2*8,6 + 1*8, 7 + 1*8, 6 + 2*8, 7 +

called by __ next__() and constantly returns the next value is called an iterator: Iterator.Use the following method to determine if the previous object is an iteratorFrom collections Import Iteratorprint (Isinstance ("Iterator)") Print (Isinstance (123,iterator)) print (Isinstance (), Iterator) Print (Isinstance ([],iterator)) print (Isinstance ({},iterator)) print (Isinstance ((x for X in range (10)), Iterator))Only the last one can be __next__ (), and only the last one is true, which is the

] set the loop variable I, the initial value is 1, traverse to 10.[Cui 8] set sum value to sum + I[Cui 9] step is 2, the default step is 1. Equivalent to the meaning of i+=2! Instead, the default is i++.[Cui] assigns the NS to the item.[Cui]NS is an array that is traversed.[Cui] print each item[Cui] is no different from traversing an array![Cui] because the traversal is a map, so each item is entry type[Cui

Compile a function. When n is an even number, call the function to calculate 1/2 + 1/4 +... + 1/n. When n is an odd number, call the function 1/1 + 1/3 +... + 1/n ., Even number First, write a function whose n is an even number: Def peven (n): s = 0.0 for I in range (2, n + 1.0): s + =/I print 'value:', s Write another function with n as an odd number: Def po

ImportJava.lang.Math; Public classTest{ Public Static voidMain (string[] args){ intn,sum=0; for(n=1;n{SYSTEM.OUT.PRINTLN (n);sum+= (Math.pow ( -1, (n+1))) * (n * n); } System.out.print ("1 squared-2 squared +3 squared-4 squared ... -100 squared, and the result is:"+ sum); }} Using the Math method in LangPow (double A, double b)//to denote the B-side of a Public classTest{ Public Static voidMain (stri

of N.A very ingenious use of a property,n=n (n-1) can remove the property of the rightmost 1 in the binary of N, and the loop is removed until all 1 is removed, which reduces the complexity of the problem to only the number of 1. The code is as follows: int Func3 (int data) { ////data (Data-1) removes the rightmost 1 each time, removes how many 1, or contains several 1 int count = 0; while (data) { data = data (data-1); count++; } return count; } Exte

Xception: Here we have a picture of a Scottish barrel, especially my favorite Scotch whisky, Lagavulin. Xception correctly classifies this image as "buckets".The last example is to classify using VGG16: A few months ago, when I finished the game of the Wild Hunt, I took this photo of the monitor. VGG16 's first prediction was "home theater", which was a reasonable prediction because there was a "TV/monitor" in the top-5 forecast.As you can see from the examples in this article, the