shortest distance between two cities

Edit distance refers to the minimum number of editing operations required to turn from one to another in two strings, and the permitted editing operations include replacing one character with another, inserting a character, and deleting a character. problem Given the two strings S1 and S2, the editing distance for S2 and S1, that is, at least the number of steps required to edit the S1 into S2.Analysis Defi

ProblemA directed acyclic graph (unweighted dag) with no Benquan (that is, Edge 1) and a DAG with two points s, T, the shortest distance from S to T, and 1 if it cannot go from S to T.SolutionDfs,bfs are available, for unweighted dags, BFS is more suitable, the DFS solution is given below.Const intN (1e5+5); Vectorint>G[n];intD[n], vis[n];voidDfsintUintt) {Vis[u]=1;if(u==t) {d[u]=0;return;} for(intI=0; I){

Title Link: http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1407Descriptiontwo pointsA,Bare doing uniform motion. Give theT= 0 MomentsA,Bthe coordinates, andA,Bthe speed, calculationT≥0 O'Clock the minimum value of the distance between two points. Inputthe first line of input contains an integerT(1≤T≤ $), indicating that there are altogetherTGroup test Data. for each set of test data, the first row consists of 4 integersxA,yA,vAx,vAy( -103≤xA,yA,vAx,

The calculation of the shortest editing distance is realized by using dynamic programming algorithm. Copy Code code as follows: #encoding: Utf-8 #author: Xu Jin #date: Nov 12, 2012 #EditDistance #to find the minimum cost by using editdistance algorithm #example output: # "Please input a string:" # exponential # "Please input to the other string:" # polynomial # "The expected cost is 6

C-Edit Distance time limit: Ms . Memory Limit: 65536KB 64-bit input/output format: %i64d %I 64u SubmitStatusDescribeLet x and y are both strings over some finite alphabet A. We would like to transform x into y allowing only operations given below: deletion: a letter with x is missing in y at a corresponding position. insertion: a letter with y is missing in x at a corresponding position. Change : letters at corresponding positi

#include Copyright NOTICE: This article for Bo Master original article, without BO Master permission cannot reprint |copyright©2011-2015,supernatural, all rights Reserved. _datastructure_c_impl: In Figure G, find the distance vertex v0 all vertices with the shortest path K

Returns the shortest distance between two points. // Memset (MAP, 0x1ffffff, sizeof (MAP); // The initialization method is incorrect. The correct method for using memset is that the initial value is an 8-digit value. For example, memset (MAP, 0x3f, sizeof (MAP); If map is of the int type, it is initialized to four 3f, namely 0x3f3f3f3f. # Include

http://acm.hdu.edu.cn/showproblem.php?pid=2083Median, A,b,c is 3 points, if C is between a A and a, then C to a, B and for (B-A), if CSo find the middle point on the line. If it is an odd number, the middle point is one, and if it is an even number, the two intermediate points will be selected.The code is as follows:#include #include#includeusing namespacestd;intMain () {intm; while(SCANF ("%d", m)! =EOF) { while(m--) { intn,x[ -]; scanf ("%d",N); for(intI=0; i) {scan

Idea: feel a bit like violence ah, anyway I feel very violent, such as beg d[i][j], use this method to ask, directly consider will not go through a point K (k is any point), and finally get the minimum valueLook at the code#include #include#include#include#includestring.h>#include#include#include#includeSet>#include#includetypedefLong Longll;using namespacestd;Constll mod=1e9+7;Const intmaxn=1e3+Ten;Const intmaxk= -+Ten;Const intmaxx=1e4+Ten;Constll maxe= ++Ten;#defineINF 0x3f3f3f3f3f3fintV,e;ll