block and o toole

Icepoint fought for the first time yesterday and lost the first battle! Start to see a line segment tree question, DB just one day before, knock on 1A. I checked a physics question with Gx and started to analyze the error process. We put it down three times and put it down! Later, DB showed me a greedy question. The tangle was that we didn't come up with a good greedy strategy, so we had to put it down first. GX is working on a big number question. enumeration is used... I'm dizzy, decisive

This question is more restrictive than that of poj. It defines the size of the sub-matrix, starting to see the time of 10 s, decisive violence, then decisive TLE, and a little bit of optimization or TLE! Then we use DP. How is DP used? It is very simple, so that a [I] [J] is 1 # Include

A matrix. Some grids are F and some are R. You need to find the largest sub-matrix so that all the matrices are F. Idea: enumerate each sub-Matrix directly, obviously the complexity is O (m ^ 3 n ^ 3), obviously TLE. We can use scanning method: up (I, j) is used to represent a grid (I, j) Suspension Line (the suspension line refers to the line segment before this grid goes up to the grid of the first R). Left (I, j) indicates the position where the su

Title Link: http://acm.hdu.edu.cn/showproblem.php?pid=3605EscapeTime limit:4000/2000 MS (java/others) Memory limit:65536/65536 K (java/others)Total Submission (s): 8001 Accepted Submission (s): 1758Problem Description2012 If This is the end of the world? I don't know how. But now scientists has found that some stars, who can live, but some people does not fit to live some of the planet. Now scientists want your help, was to determine what's all of the people can live in these planets.Inputmore s

Clever Use of the Floyd algorithm Enter n, m, and n to represent n points, then enter the distance between n points (n * n matrix), then ask m, enter, b, c if the shortest path between a and B contains a cpoint, Yes is output; otherwise, No is output. I didn't make it during the competition. After the game, I knew it as soon as I got an on-demand video .... I used the floy algorithm to calculate the distance and record the path .. Then TLE is dead...

Question: How many kinds of money can be formed with a certain amount of paper money and a nominal value without exceeding the total amount of money?Thought: I thought of multiple backpacks. I wrote it with multiple backpacks, tle. Later I used binary optimization or tle. Later I checked the dis and said I would use the priority queue to search for information online, did not understand, later look at acmj1

containVarInString (containVar, stringVar) to be searched: try: if isinstance (stringVar, str): if containVar in stringVar: return True else: return False except T Exception, e: print edef CmpValue (propsDic, limit tdic): try: containSeparatorList = [val for var in limit tdic. values () if containVarInString ("|", var) for val in var. split ("|")] notContainSeparatorList = [var for var in Alibaba tdic. values () if not containVarInString ("|", var)] effectvaluelist = notContainSeparatorList + c

/* An AC automatic machine template question has timed out more than 20 times. After being modified for half a day, the code marks a key step for modifying the process from TLE to AC, it looks like the details of array passed as function parameters, but I still don't understand it. If the great God understands the reason, I hope you can give me some advice !!! The problem was finally solved. It turned out that the repeated call of strlen () function i

HDNOIP201405 Yang Hui triangle, hdnoip201405 Yang Hui 2016.1.27 Question description The Yang Hui triangle is a digital triangle like the following:11 11 2 1......Now we want to find the number of N numbers in the N row of the Yang Hui triangle which can be divisible by the given prime number p. Input Integer N and p separated by two spaces in a row Output Returns an integer that indicates the number of the nth row that can be divisible by t

pointers, array subscript out of bounds will cause this error.2. Your program is attempting to access an array unit beyond the hardware support range.3. A non-normal floating-point operation was performed. This is usually due to a non-normal floating-point number being involved in a floating-point operation, such as an incorrect floating-point format.4, floating-point number division has a divisor of zero exception.5. When integer division occurs, there is an exception with a divisor of zero.6,

2017-08-13 19:31:47Writer:pprpAfter a general understanding of the KMP algorithm, although not deep enough, but already can write code, (can be said to be back)So this problem as a template, for everyone to use it.To give you a substring p and a main string s, how many substrings in the main string?The code is as follows: (I have marked the points to note, two functions can be used directly)#include #include#include#includeusing namespacestd;intans;Const intMAXN =1000005;intNEXT[MAXN];CharS[MAXN