C++

I. Concepts The process of converting an object into a byte sequence is called serialization. The process of restoring a byte sequence to an object is called deserialization.   Serialization, also known as serialization, is a mechanism used by

You can set the optionsbehavior. populateservicecolumns attribute to true before setting keyfieldname. The keyfieldname and parentfieldname fields are displayed.   Trlbm. datasource =Dtshow; trlbm. optionsbehavior. populateservicecolumns=True;

LCS is a dynamic planning of linear structures. It should be a very simple type of dynamic planning. The longest common subsequence problem. Once the state is identified, it is very easy to find the state transition equation. But for this question,

To read data from an Excel table, you can connect to the Excel Data Engine. The Code is as follows: /// /// convert EXCEL to able /// /// Excel file name // / Excel form name // private datatable exceltodatatable (string filename, string

POJ 2245 Lotto DescriptionIn the German Lotto you have to select 6 numbers from the set {1, 2 ,..., 49 }. A popular strategy to play Lotto-although it doesn' t increase your chance of winning-is to select a subset S containing k (k> 6) of

POJ 3934 Queue DescriptionLinda is a teacher in ACM kindergarten. she is in charge of n kids. because the dinning hall is a little bit far away from the classroom, those n kids have to walk in line to the dinning hall every day. when they

Hdu 1285 determines the competition ranking (topological sorting)Determine competition rankingsTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission (s): 12152 Accepted Submission (s): 4840 The topological

Hdu 4920 Matrix multiplication (efficient) Link: 4920 Matrix multiplication Given two n-order matrices, evaluate the modulo after matrix multiplication 3. Solution: there are only three situations after matrix modulo 3: 0, 1, and 2. Therefore, for

Codeforces 196 E. Opening Portals Problem E. Opening PortalsFirst, based on the nature of the portal, if all vertices are portals, the result is the minimum spanning tree of the graph.For graphs with only k nodes being portals, you only need to

Ultraviolet A 10561-Treblecross (Nim) Link to the question: Ultraviolet A 10561-Treblecross N grids are arranged in a row, some of which are 'x'. The two players take turns and put X in the grid. If three X boxes appear in a row, they will win.

Leetcode -- Next Permutation Problem Description:   Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers. If such arrangement is not possible, it must rearrange it as the lowest possible

Hdu 1754 I Hate ItI Hate ItTime Limit: 9000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission (s): 37627 Accepted Submission (s): 14893Problem DescriptionMany schools have a popular habit. Teachers like to ask, from xx

140804summer training .txt 1. Primary FunctionsThe mother function, as the name implies, is the mother. It indicates that there is a son in this function, that is, a subfunction. To put it bluntly, a subfunction can be considered as a subset of the

C ++ binary input/output stream interface designWhen it comes to input and output streams, as CPPer, it is natural to think of std: iostream. For text stream processing, iostream can be said to be powerful enough to deal with general complexity

POJ 1731 Orders     Resolution: Advanced questions in full order, pay attention to heavy judgment You do not need to consider using the next_permutation function. Of course, it will take too much time to determine the weight if you manually

HDU 1166 enemy deployment (line segment tree)Enemy army deploymentTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission (s): 42921 Accepted Submission (s): 18164Problem DescriptionC's dead enemy country A

Codeforce 22B Bargaining Table B. Bargaining Table Bob wants to put a new bargaining table in his office. To do so he measured the office room thoroughly and drew its plan: Bob's office room is a rectangular roomN? ×?MMeters. each square meter of

HDU 1618 Oulipo KMP Problem Returns two strings to find the frequency at which one string appears in another string. In the past, there was another trap in kmp. The following notes show that if the subscript is not well performed, there will be a

LeetCode -- Maximum Subarray   Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array[−2, 1, −3, 4, −1, 1, −5, 4],The contiguous subarray[4, −1, 1]Has the largest sum =

Hdu 4704 Sum (ferma small theorem + fast power) // (2 ^ N-1) % mod // ferma's theorem: a ^ n ^ a ^ (n % (S-1) * a ^ m-1) using a ^ (n % m-1) (mod m) # include # Include # Define mod 1000000007 using namespace std ;__ int64 pow (_ int64