玄武密码 给若干模式串和一个文本串.求每个模式串在文本串上能匹配的最大前缀长度. N<=10^7,M<=10^5,每一段文字的长度<=100. jklover的题解 将模式串建成一个 AC 自动机,匹配文本串的时候往前暴力跳,跳到第一个合法的位置即可. 时间复杂度:线性. co int N=1e7+1,S=4; int n,m; int len[N]; namespace AC { int idx; int id(char x) { switch(x) { case 'E': retur…
HDU2222 Keywords Search Problem Description In the modern time, Search engine came into the life of everybody like Google, Baidu, etc. Wiskey also wants to bring this feature to his image retrieval system. Every image have a long description, when us…
地址:http://acm.split.hdu.edu.cn/showproblem.php?pid=2222 题目: Keywords Search Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 56558 Accepted Submission(s): 18493 Problem Description In the mo…
Keywords Search Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 50435 Accepted Submission(s): 16233 Problem Description In the modern time, Search engine came into the life of everybody li…