dec vt220

Label: style blog HTTP color Io OS AR for SP Question of fetch water... And then it is abused... I couldn't understand the question. Later I checked my hzwer's blog and found that the question was translated incorrectly... When I went there, I said how poor my language was. Hzwer: "In short, it starts from 2 to 3 on the map, and passes through at least one 4 on the way. " It turns out that it is not two BFs... It is only the first time when BFS should be noted that it cannot go through 4. Then

The suffix array is the longest string that repeats at least k times, and the two sub-groups can#include 　　bzoj1717: [Usaco2006 dec]milk Patterns model suffix array for milk production

Bzoj 1649Luogu 2854From:usaco 2006 Dec Sliver (question 10th of Usaco brush problem) Obviously two-dimensional cost 01 backpack.But direct doing will time out, and there are restrictions on the connection.You can tell by the wi[i]+xi[i]=j that you only need to consider the transfer wi[i]+xi[i]=jSo we set F[I][J] f[i][j] for the maximum interesting value of J J for the shop to I IThen there are the following transfer equationsF[xi[i]+wi[i]][j]=max (F[x

1717: [Usaco2006 dec]milk Patterns Milk production modelTime Limit:5 Sec Memory limit:64 MB submit:952 solved:519 [Submit] [Status] [Discuss] Description Farmer John found that the quality of his cows ' milk had been changing. After careful investigation, he found that although he could not foresee the quality of milk production tomorrow, there was a lot of overlap in quality for several consecutive days. We call it a "pattern." John's milk can be gi

1649: [Usaco2006 dec]cow Roller CoasterTime Limit:5 Sec Memory limit:64 MB submit:584 solved:302 [Submit][status][discuss] Description The cows is building a roller coaster! They want your help to design as fun a roller coaster as possible and while keeping to the budget. The roller coaster'll be built to a long linear stretch of land of length L (1 Input * Line 1:three space-separated integers:l, N and B. * Lines 2..n+1:line i+1 contains four space

Original article link "If people don't believe in the simplicity of mathematics, they just don't realize the complexity of life ." -- Johnvon norann Dec mainly discusses extra points in discrete situations, which are used in the computer field. We know that it is impossible to use a computer to process geometric images completely smooth (the computer is a discretization world consisting of 0 and 1 ), the concept of

This article shares the blog from the Green Orchard, the address is: http://www.cnblogs.com/qqingmu/archive/2008/01/10/1034168.htmlWe often encounter URL transfer (form submission) parameter encryption when we make Web pages.For example: To make a user account edit, to pass the user's id,url as follows: http://localhost/mysystem/editAccounts.aspx?ID=2But do not want to let others know that the user ID is 2, malicious users may also change the 2 to change the user ID. Encrypting passed parameter

2102: [Usaco2010 dec]the trough Game time limit:10 Sec Memory limit:64 MBsubmit:117 solved:84[Submit] [Status] Descriptionfarmer John and Bessie is playing games again. This one have to does with troughs of water. Farmer John has hidden N (1 4 41000 10110 11001 10011 1Sample Output1010HINT SourceSilverThe answer: There is no other idea-only violence ... Then wrote a pure binary poor lift, and then, then, incredibly ac?!?! 44ms is also drunk =

MD5 encryptionMD5 encryptionpublic static string Getmd5str (String tocrystring){MD5CryptoServiceProvider hashmd5;HASHMD5 = new MD5CryptoServiceProvider ();Return bitconverter.tostring (Hashmd5.computehash (Encoding.Default.GetBytes (tocrystring)). Replace ("-", ""). ToLower ();//asp is lowercase, lowercase all characters}DES encryption and decryption///DEC Encryption Process///public static string Encrypt (String ptoencrypt, String SKey){Descryptoserv

bzoj2101[usaco2010 dec]treasure Chest Treasure ChestTest instructionsGive a sequence, A and b take a number of turns, who take the sum of the number of large who wins. Each time can only take the sequence at both ends, ask a can fetch the sum of the maximum is how much. Suppose both people use the optimal strategy. Sequence size ≤5000ExercisesDp. F[i][j][0]=max (F[i+1][j][1]+a[i],f[i][j-1][1]+a[j]), F[i][j][1]=min (F[i+1][j][0],f[i][j-1][0]).Code:1#in

4390: [Usaco2015 dec]max Flow time limit:10 Sec Memory limit:128 MBsubmit:139 solved:85[Submit] [Status] [Discuss] DescriptionFarmer John have installed a new system of n−1 pipes to transport milk between the N stalls in his barn (2≤n≤50,000), Conve niently numbered 1 ... N. Each pipe connects a pair of stalls, and all stalls is connected to each-other via paths of pipes.FJ is pumping milk between KK pairs of stalls (1≤k≤100,000). For the iit

[Usaco2005 Dec] Knights of Ni Knight description Bessie encountered a very troublesome thing: she stumbled into a castle in the forest, and if she wanted to go home, she had to walk through the forest guarded by the Knights. To be able to leave safely, Bessie had to look for a special shrub in the forest and bring a tree to them, as the Knights demanded. Of course, Bessie wanted to leave the dreadful forest early, so she had to finish the task of the

bzoj1640[usaco2007 nov]best Cow Line Queue transformbzoj1692[usaco2007 Dec] Queue transformationTest instructionsThere is a cow queue. Each time you can pull a cow at the first or last end of the queue, put her on the tail of the new queue, and repeat the rest of the cow queue until all the cows are plugged into the new queue. The resulting queue is the final cow queue that fj to register. For the initial position of a given cow, the queue with the sm

bzoj3011[usaco2012 dec]running away from the BarnTest instructionsGive a tree with a edge at the root of point 1th, and ask the number of points in the subtree of each point that is less than L. The size of the tree is ≤200000.ExercisesEach node maintains a tag-and-Heap, DFS when the child node of the heap plus the current node to the child node of the Benquan, after which it is merged with the heap of the current node.Code:1#include 2#include 3#inclu

3412: [usac2009 DEC] Music notes score time limit: 3 sec memory limit: 128 MB Submit: 35 solved: 30 [Submit] [Status] Description Input Row 1st: two integers, N, Q. Rows 2nd to n + 1: line I + L has only one integer bi. Row n + 2 to N + q + I: Row N + I + L has only one integer ti. Output Rows 1st to Q: Which scale is the cow hitting during the time of the word question for each query?Sample input3 5 2 1 3 2 3 4 0 1 sample output2 3 3 1 1 hint Sourc

Tags: des style blog HTTP color Io OS AR 1589: [usaco DEC] trick or treat on the farm acquisition candy time limit: 5 sec memory limit: 64 MB Submit: 400 solved: 220 [Submit] [Status] Description every Halloween, cows in Wisconsin will dress up and wander out in the farm's n (1 ≤ n ≤ 100000) sheds to collect candy. every time they walk to an unapproved cowshed, they will collect a candy in the shed. john tried his best to make the co

bzoj4396[usaco2015 Dec]high Card WinsTest instructionsThere are a total of 2n cards, Alice has n Zhang, Bob has n Zhang, each bureau points big win. Knowing Bob's Order of cards, Alice can win a few innings. n≤50000.ExercisesGreedy. Sort Alice and Bob's cards by the number of points, and then if Alice's current card wins Bob's current card, it ans++ to adjust Bob's current card until Alice's current card wins Bob's current card.Code:1#include 2#includ

3389: [Usaco2004 dec]cleaning shifts schedule duty time limit:1 Sec Memory limit:128 MBsubmit:218 solved:86[Submit] [Status] [Discuss] Description have T (1≤t≤10^6) time of day. John is going to arrange for his N (1≤n≤25000) cows to come on duty and clean the barn. Each cow has its own free time period [Si,ei] (1≤si≤ei≤t), only the idle cows can be arranged out on duty.Also, a cow must be on duty every time period. So how many cows do you nee

Water problem SPFA sort from big to small on the line =-=//1 type2Node=Record3 F,t,l:longint;4 end;5 varN,m,i,j,fx,fy,num,ans:longint;6b:array[0..20001] of node;7father:array[0..1001] of Longint;8 procedure Qs (t,w:longint);9 varMid,l,r:longint;Ten Tem:node; One begin Al:=t; R:=w; mid:=b[(l+r) shr1].L; - Repeat - begin the whileB[l].l>mid DoInc (L); - whileB[r].l DoDec (r); - iflR Then - begin +tem:=B[l]; -b[l]:=B[r]; +b[r]:=tem; A Inc (L); at

3891: [Usaco2014 dec]piggy back Time limit:10 Sec Memory limit:128 MBsubmit:116 solved:92[Submit] [Status] [Discuss] DescriptionBessie and her sister Elsie graze in different fields during the day, and in the evening they both want to walk back to th E Barn to rest. Being Clever bovines, they come up with a plan to minimize the total amount of energy they both spend while walking. Bessie spends B units of energy if walking from a field to an