#include<bits/stdc++.h> #include<stdio.h> #include<algorithm> #include<queue> #include<string.h> #include<iostream> #include<math.h> #include<set> #include #include<vector> #include<iomanip> using namespace std; #define ll long long #define pb push_back #define FOR(a) for(int i=1...
luyuncheng's blog For this question:codeforces 201B Lucky Common Subsequence。 it ask us just one virus so we can use kmp + dp to solve this question。 but i have a question that if ask us more than one virus what should i do?? i have an ideal just use Aho-Corasick automaton to ...
题意:给定两个串,求出两个串的最长公共子序列,要求该公共子序列不包含virus串。 用dp+kmp实现 dp[i][j][k]表示以i结尾的字符串和以j结尾的字符串的公共子序列的长度(其中k表示该公共子序列的与virus的匹配程度)很显然,当k==strlen(virus)时,该公共子序列不是我们所求得 当添加一个字符时,如果失配,这时...
KMP+dp Codeforces346B Lucky Common Subsequence 点击打开链接 题意:告诉你A,B,C,求A和B的最长公共子序列,并且C不是最长公共子序列的子串 思路:先求C的Next数组,利用Next数组来完成状态的转移。 而且,用KMP来优化的dp,通常都是往后更新的写法。 对于打印路径,我们能用DFS来完成,这里有个我觉得很...
http://codeforces.com/contest/346/problem/B classical longest common string problem(LCS), dp algorithm classical string matching problem, kmp algorithm solution: First,for LCS, dp[n][m]= dp[n-1][m-1] ;if two char match max(dp[n-1][m],dp[n][m-1]) ;if two char not match then...
A substring of a string is a continuous subsequence of the string. For example, BCD is a substring of ABCDEF. You are given two strings s1, s2 and another string called virus. Your task is to find the longest common subsequence of s1 and s2, such that it doesn't contain virus as a...