triplehead2go dp

Title Link: http://acm.hdu.edu.cn/showproblem.php?pid=5569Simple DP, disgusting border treatment, no language;if ((i+j)%2==1)Dp[i][j]=a[i-1][j]*a[i][j]+min (Dp[i-2][j], dp[i-1][j-1]);Dp[i][j]=min (Dp[i][j], a[i][j-1]*a[i][j]+min (

DP is a common problem in the competition, but also my weakness orz, more to practice. See Ganga's DP topic exercise the first is Max sum plus Plus, so I took the hdu1003 max sum I've done before and did it again.HDU 1003 Max SumTitle Link: http://acm.hdu.edu.cn/showproblem.php?pid=1003Title Description: A sequence of integers, in which a continuous sub-sequence is obtained, and the maximum value and the st

[ACM] hdu 3555 Bomb (Digital DP, count the total number of "49" contained in 1-N) BombTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/65536 K (Java/Others) Total Submission (s): 7187 Accepted Submission (s): 2512 Problem DescriptionThe counter-terrorists found a time bomb in the dust. but this time the terrorists improve on the time bomb. the number sequence of the time bomb counts from 1 to N. if the current number sequence between des t

in one of these three positions. Q. How many pies can Gameboy receive? (assuming his backpack can hold an infinite number of pies)Input data has multiple groups. The first behavior of each group of data is a positive integer n (0Output each set of input data corresponds to a row of outputs. Output an integer m, indicating that Gameboy may receive a maximum of M pies.Tip: The amount of input data in the subject is relatively large, it is recommended to read in scanf, with CIN may time out.Sample

The patience of a senior one night to explain, so I understand the interval DP so high-level things, or very easy. That is, dynamic planning within a range.Summary of the following use case questions.　　Example: Stone merging.　Description n heap of stones in a row, each pile of stones have a certain number. Now we are going to heap n heaps of stones. The merging process can only pile up adjacent two piles of stones each time, and the new pile counts as

Bessie canCatch. Bessie starts at tree1.Input12.. t+112: The tree that would drop an apple each minute.Output1 catch without walking more than W times.Sample Input7 2 2 1 1 2 2 1 1Sample Output6HintINPUT details:seven apples fall-One fromTree2, then bothinchA row fromTree1, then bothinchA row fromTree2, then bothinchA row fromTree1. Bessie isWilling to walk fromOne tree to the other twice. OUTPUT Details:bessie canCatchSix apples by staying under tree1Until the first and dropped, then moving to

DP. Solution report 3. codeforces 148d bag of mice (simple question) Catch a mouse. Memory-based search is not difficult. Writing for loops is troublesome. Solution report 4. poj 2151 check the difficulty of problems (simple question)This is a common DP representation. Learn how to "at least" this type of problem angle conversion.Solution report5. zoj 3380 patchouli's spell cards (medium question)There

Test instructions: Give you the style of the clothes you need to wear for n days, each time you can wear clothes, take off the clothes you can't wear, ask at least how many clothes to attend all the banquetsIdea: Dp[i][j] represents the minimum number of clothes to wear for i-j daysFrom the rear forward DP range from large to smallUpdate Dp[i][j] There are two th

Tag: binary DP Gray codeTitle Address: HDU 5375Test instructions: give you a binary string with '? ' The location can be determined by you to fill in ' 1 ' or ' 0 ', complete after the conversion into gray code, each location has a weight a[i], only gray code for ' 1 ' bit can add weights, ask you the final weights and the maximum number of.Idea: The first thing to understand is how binary code and gray code are converted:Dp[i][0] Indicates the maximu

1 /*2 main topic: a Tree of n nodes, the maximum number of nodes (which cannot contain parent-child relationships) is selected, and whether they are unique. 3 DP (i,0) indicates that the current node I is not selected, DP (i,1) represents the current node I select4 leaf node dp (i,0) =0,DP (i,1) =15

I. Basic CONCEPT-DP: Wirelessly relative Size-dpi: (dot per inch) pixels per inch How much-px: Pixel point ii. detailed description 1, px and dpi-px:The usual "1920x1080" is just the number of pixels, which is 1920pxx1080px, which represents 1920 pixels on the phone's height and 1080 pixels in width.-DPI:To determine the display of the phone screen is good or bad, but also to consider the width of the screen (inches), that is, DPI is the number of pix

Title Link: http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=1059Analysis: Dp[i][j] means the first I stone composition two tower height difference of the lower tower maximum height of jState transitions:Every stone has three ways:1. Place on high tower: Dp[i][j]=max (Dp[i][j+t],dp[i][j]); Low tower unchanged

http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=5170Reference:http://blog.csdn.net/cc_again/article/details/24841249Topic Meaning:Queue n Soldiers, each soldier three kinds G, R, p optional, for at least m continuous g soldiers, up to the number of K continuous R soldiers arrangement of the species.A maximum, a least difficult to judge. Can be converted to two of the most.At least m = fetch value M~n = {up to n}-{up to m-1}Because it is the total number of cases, the nth case can be i

This is a typical tree-like DP, And I have understood it for a long time, I feel good about myself ......................... So make it clear and remember it later. A tree with n vertices (1-n) and n-1 edges. Each vertex has a weight value. Start from 1 and take step V, the maximum number of retrieved Weights We use the thought of a backpack here. The number of steps is equivalent to the size of the backpack, and the weight on the page is equivalent t

When I went to cainiao to set sail in their dormitory last night, I saw him doing this. At that time, I did not see the question, and I saw that he declared an array called DP. I was so excited at the time that I asked him if he would do it or not. Even though I asked him if he would, I would certainly leave it blank. As a result, he directly blew me out .... A very watery DP, I don't even think it's

Title Link: http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=5595Test instructions: give n a string containing ' * ', '. ', ' ^ ', '! ' These four operators, along with lowercase letters (representing vectors) and numbers.All four operators have different arithmetic rules. Ask how many different formulas (not illegal operations) can be formed after the parentheses are added.Idea: Simple interval DP, which regards an operator as a bit.DP[I][J

DP (I, J, 1) represents the first I, with J pairs is not legal, I and i-1 are together.DP (i, j, 0) denotes the first I, there is J pair is not legal, I and i-1 not together.Transfer we just need to consider is more than a pair of illegal or less a pair of illegal, or is unchanged, consider the current I and i-1,i-2 position of the influence on it.DP (I, j, 1) = 2*DP (i-1, j-1, 0) +

in Node I.The third part contains N-1 line. There is numbers a, A, a, and node B are adjacent, meaning.Input would be ended by the end of file.Note:wshxzt starts at Node 1.OutputFor each test case, output the maximal numbers of apples wshxzt can eat at a line.Sample Input2 10 111 23 20 1 21 21 3Sample Output112SourcePOJ Contest,author:[email protected]Topic link : http://poj.org/problem?id=2486;Test Instructions :A tree, n points (1-n), N-1 Edge, each point has a weight, to start from 1, take t