js backpack

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August 4 ACM training --------- backpack Problem

I really want to talk about it. Every topic has to work hard to rank data for two days. It is really hard for me to be a stupid and hard-working person, there are a lot of things that can only be understood-to cheer up-otherwise it will be despised Backpack-generally speaking, it is the question of filling a backpack. Its requirement is generally to maximize its value. 01

DP Backpack Series __DP

One: 01 backpack POJ 3624 Charm bracelet The backpack doesn't have to be full. #include POJ 362 Bookshelf 2 What full backpack ... In fact, DFS search on the line, the data is only 20, I think each can reach the value of 1, more than the end of the update answer, with a linked list can not be traversed again. This is the direct

Hdu 3535 AreYouBusy (DP _ backpack)

XiaoA wants to spend as much time as possible to do ACM, but the boss asks him to finish n heap jobs within t time, and each job consumes cost [I] [j], happiness val [I] [j]. Each job has num [I] jobs, and each heap of jobs has a nature. 0 indicates that at least one job should be done, 1 indicates that one job can be done at most, and 2 indicates that the job can be done or not done at will. Finally, I asked my boss how to achieve the highest happiness when meeting the boss's requirements.-1. S

Poj 3181 dollar dayz 01 full backpack Problem

01 A complete backpack problem. This mainly describes the number of combinations. There are more people doing two-dimensional DP. here we can use one-dimensional DP. One-dimensional transformation equation: DP [J] = DP [J-I] + dp [J]; where I represents the weight and J represents the current backpack capacity. This means that DP [J-I] indicates the maximum combination of J-I

Hdu 2955 Robberies // 01 backpack

Description: How can Roy grab the most money without being caught. It provides the money that each bank can grab and the probability of being caught. Analysis: at the beginning, we thought that the probability was only two decimal places, multiplied by 100, and we found that the data was not like this. We decided to wa. Then I am stuck here. What should I do if the size of my backpack is not an integer. In desperation, I looked at other people's probl

DP backpack problem + Memory Recursion

Two questions: 1) Dynamic Planning solution for knapsack problems2) Another Implementation Method of Dynamic Planning, memory recursion (mentioned in the first article of DP, also mentioned in professional). I will explain it here and add all the articles in detail, this can be regarded as a dynamic rule. The last one is not detailed. Certificate --------------------------------------------------------------------------------------------------------------------------------------------------- Gi

HDU 2602 bone collector (01 backpack)

Http://www.cnblogs.com/fly1988happy/archive/2011/12/13/2285377.html: 1. The optimal solution for "just full of backpacks" is required: During initialization, Except f [0] is 0, F [1 .. v] is set to-∞, which ensures that the final f [N] is an optimal solution just filled with a backpack. If the capacity of the backpack cannot be satisfied, that is, the optimal value of F [v] cannot be obtained. Then,

Poj 2063 investment (full backpack)

Poj 2063 investment (full backpack) Http://poj.org/problem? Id = 2063 Question: Initially, M (M Now you need to buy a t-year (T Analysis: Since there are n stocks and each stock can be bought without limit, this question can regard every year's investment as a complete backpack problem. then, we will continue to invest in the next year with the profit and capital of the previous year (it is also a complet

Hdu 2602 01 backpack

Hdu 2602 01 backpack Background: if you have not carefully read the question, the wrong input order is skipped once. I made the first DP question myself. After reading this question for a long time, I finally understood the 01 backpack mentioned in Chapter 9. Learning: 1.01 A backpack features a limited number of items. You can choose to put or not to put each it

Tree-shaped Backpack summary

The last two days have been plagued by a tree-shaped knapsack problem. The cause of all this was a knapsack problem, a problem that was done on Hackerrank a year ago.The main topic is:$ to a tree of N nodes, node I for a value of v[i], volume of s[i] goods. Another backpack with a volume m, requires a connecting block on the tree to be loaded into the backpack, \ \ Makes the total value of the selected item

01 The difference between a backpack and a greedy

The 01 knapsack problem which the greedy method cannot solve is an inseparable problem01 knapsack problem is to consider the overall optimal solutionThe premise of greedy strategy is that local optimal strategy can lead to global optimal solution.Analysis and editing of examplesExample 1,[0-1 knapsack problem] There is a backpack, the backpack capacity is m=150. There are 7 items, items can not be divided i

Classic Backpack problem

knapsack problem I difficulty level: B; run time limit: 1000ms; run space limit: 51200KB; code length limit: 2000000B Questions Description has a backpack volume of v and n items, and gives each item a volume. Request from n items, any number of packs into the backpack, so that the remaining space of the backpack

HDU 2844 Coins Multiple backpack

Poke here: 2844Review the knapsack problemTest instructions: Tell you the value and quantity of the coins in N, how many different denominations can be composed, the denomination is limited in the interval [1, M]Idea: Cover one side with a backpack, take the space of the coin for its own value, then when the dp[i] = = i, the space for I backpack back filled, that can constitute the case of denomination I1#i

Hdu4169 wealthy family (tree backpack)

For a given tree, each node has a weight value. You must select the K points with the highest total weight. At the same time, any of the K points cannot be the ancestor of other nodes .. Analysis: Ha, I feel like a tree-shaped backpack as soon as I see the question, but there are too many nodes and 150000 nodes. If I save it with a two-dimensional array, it's easy to write, however, the memory is definitely exploding, so a temporary array is enabled

Poj2063 investment-full backpack

Tags: Small trouble DP full backpack Question: There are d kinds of stocks, each of which has a purchase amount and income,You have the principal C. What is the maximum investment income after year? Analysis: Here, we can know that each type of stock can be purchased for an unlimited number of times, so we can see that it is a full backpack problem, and we can regard the principal C as a

HDU 2191 Mourning 512 Wenchuan earthquake--cherish now, Thanksgiving life (multiple backpack)

Test instructions: Give the maximum value of n, and then give the type M and each bag number C, price p, weight h, ask to buy the maximum weight of riceIdea: Each item has a fixed maximum number of times. For multiple knapsack problems. Convert to 01 backpack to doThe following methods are converted to 01 backpack to doIdea 1: The item does not spread out, choose each kind of time, carries on the discussion

[2012 Shandong ACM Provincial Race] Pick apples (greedy, full backpack, enumeration)

the backpack, but the amount of data is too large, the direct full backpack will definitely time out. After the game to see the problem-solving report only to know that the topic with a wide range of greed, a small range of full backpack, this good understand, see the online code for the small range of AC is 1000, but this is the teacher today proved to be wrong

HDU 4003 Find Metal Mineral (tree DP + grouping backpack)

connected point x and y which shoshould cost w. 1 OutputFor each cases output one line with the minimal energy cost. Sample Input3 1 1 1 1 1 1 3 1 1 1 2 2 1 1 3 1 Sample Output3 2 Hint In the first case: 1-> 2-> 1-> 3 the cost is 3; In the second case: 1-> 2; 1-> 3 the cost is 2; SourceThe 36th ACM/ICPC Asia Regional Dalian Site -- Online Contest Recommendlcy -- Minimum cost required for K robots to traverse all vertices from the same point -- Tree DP, group

Two-dimensional backpack (Zhong wanted) (not DP)

"Problem description"The backpack is a good thing, I hope I have it.Give you a two-dimensional backpack, its volume is? X?. Now you have some size for 1x2 and 1x3 of the items, each item has its own value. You want to put some items in your backpack so that theyValue and maximum, ask the maximum value and is how much."Input Format"The first line an integer? The n

Getting started with HDU 1114 piggy-bank full backpack

This question is about money-saving pig, empty quality W1, money quality W2, and then the value and weight of various types of money, asking how much money a piggy bank needs to store is a classic topic for getting started with a full backpack. Now I don't fully understand it. Let's talk about my understanding. The full backpack is to put every kind of data in it as much as possible, and every kind of data

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