HDOJ 1159 Common Subsequence[DP] Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 44280 Accepted Submission(s): 20431 Problem Description A subsequence of a given sequence is the given sequence wit…

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=1159 Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 47676    Accepted Submission(s): 21890 Problem Description A subsequence of…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1159 Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25416    Accepted Submission(s): 11276 Problem Description A subsequence of…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 28494    Accepted Submission(s): 12735 Problem Description A subsequence of a given sequence is the given sequence with some e…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 20815    Accepted Submission(s): 8954 Problem Description A subsequence of a given sequence is the given sequence with some ele…

Problem Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, ..., xm> another sequence Z = <z1, z2, ..., zk> is a subsequence of X if there exists a stri…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 37725    Accepted Submission(s): 17301 Problem Description A subsequence of a given sequence is the given sequence with some el…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1159 题意: 求最长公共子序列. 题解: (LCS模板题) 表示状态: dp[i][j] = max len of LCS a串匹配到第i位,b串匹配到第j位,此时的最长公共子序列长度. 如何转移: 首先,一个明显的决策是,如果a[i] == b[j],那么此一定要匹配.(贪心) 所以分两种情况: (1)a[i] == b[j]:dp[i][j] = dp[i-1][j-1] + 1 (2)a[i]…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1159 Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 37551    Accepted Submission(s): 17206 Problem Description A subsequence of…

HDU 1159 题目大意:给定两个字符串,求他们的最长公共子序列的长度 解题思路:设字符串 a = "a0,a1,a2,a3...am-1"(长度为m), b = "b0, b1, b2, b3 ... bn-1"(长度为n), 它们的最长公共子序列为c = "c0, c1, c2, ... ck-1",长度为k, dp[i][j]定义为子串 "a0,a1,...,ai-1" 和 子串"b0,b1,...,bj-1…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1159 Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18201    Accepted Submission(s): 7697 Problem Description A subsequence of…

POJ 1458 Common Subsequence(LCS最长公共子序列)解题报告 题目链接:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=87730#problem/F 题目: Common Subsequence Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 43388   Accepted: 17613 Description A subsequen…

[单调队列优化dp] 分组 >>>>题目 [题目] 给定一行n个非负整数,现在你可以选择其中若干个数,但不能有连续k个数被选择.你的任务是使得选出的数字的和最大 [输入格式] 第一行两个整数 n,k,如题目描述接下来一行n 个数,表示这个序列 [输出格式] 输出一行一个数,表示最大的和 [输入样例] 5 21 2 3 4 5 [输出样例] 12 [数据范围与约定] 对于20%的数据,保证1 <=n <=10. 对于40%的数据,保证1 <=n <=200.…

BZOJ2090: [Poi2010]Monotonicity 2[线段树优化DP] Description 给出N个正整数a[1..N],再给出K个关系符号(>.<或=)s[1..k]. 选出一个长度为L的子序列(不要求连续),要求这个子序列的第i项和第i+1项的的大小关系为s[(i-1)mod K+1]. 求出L的最大值. Input 第一行两个正整数,分别表示N和K (N, K <= 500,000). 第二行给出N个正整数,第i个正整数表示a[i] (a[i] <= 10^…

2017-08-06 15:41:04 writer:pprp 刚开始学dp,集训的讲的很难,但是还是得自己看,从简单到难,慢慢来(如果哪里有错误欢迎各位大佬指正) 题意如下: 给两个字符串,找到其中大的公共子序列,每个样例输出一个数: 最长公共子串(Longest Common Substirng)和最长公共子序列(Longest Common Subsequence,LCS)的区别为: 子串是串的一个连续的部分,子序列则是从不改变序列的顺序,而从序列中去掉任意的元素而获得新的序列: 也就是说…

HDU 1159 Common Subsequence 最长公共子序列 题意 给你两个字符串,求出这两个字符串的最长公共子序列,这里的子序列不一定是连续的,只要满足前后关系就可以. 解题思路 这个当然要使用动态规划了. 这里\(dp[i][j]\)代表第一个串的前\(i\)个字符和第二个串的前\(j\)个字符中最长的公共子序列的最长长度,递推关系如下: \[ d[i][j]= \begin{cases} dp[i-1][j-1]+1 & \text{if} &str1[i]==str2[j…

链接: http://acm.hdu.edu.cn/showproblem.php?pid=1159 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=28195#problem/A Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 17621…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 39559    Accepted Submission(s): 18178 Problem Description A subsequence of a given sequence is the given sequence with some el…

Problem Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, -, xm> another sequence Z = <z1, z2, -, zk> is a subsequence of X if there exists a strictly…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 48378    Accepted Submission(s): 22242 Problem Description A subsequence of a given sequence is the given sequence with some e…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1159 Problem Description 给定序列的子序列是给定的序列,其中有一些元素(可能没有)被遗漏. 给定一个序列X = <x1,x2,...,xm>如果存在严格递增的序列<i1,i2,...,则另一个序列Z = <z1,z2,...,zk>是X的子序列. ...,ik>的索引,使得对于所有j = 1,2,...,k,xij = zj. 例如,Z = <a,…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 18387    Accepted Submission(s): 7769 Problem Description A subsequence of a given sequence is the given sequence with some el…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 24489    Accepted Submission(s): 10823 Problem Description A subsequence of a given sequence is the given sequence with some e…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18765    Accepted Submission(s): 7946 Problem Description A subsequence of a given sequence is the given sequence with some ele…

Description Input 数据的第1行为两个整数N和E,以空格分隔,分别表示森林中的景点数和连接相邻景点的路的条数. 第2行包含两个整数C和M,以空格分隔,分别表示初始时聪聪和可可所在的景点的编号. 接下来E行,每行两个整数,第i+2行的两个整数Ai和Bi表示景点Ai和景点Bi之间有一条路. 所有的路都是无向的,即:如果能从A走到B,就可以从B走到A. 输入保证任何两个景点之间不会有多于一条路直接相连,且聪聪和可可之间必有路直接或间接的相连. Output 输出1个实数,四舍五入保留三…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 34819 Accepted Submission(s): 15901 Problem Description A subsequence of a given sequence is the given sequence with some element…

A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, ..., xm> another sequence Z = <z1, z2, ..., zk> is a subsequence of X if there exists a strictly increasing sequ…

问题 说明该问题在生物学中的实际意义 Biological applications often need to compare the DNA of two (or more) different organisms. A strand of DNA consists of a string of molecules called bases, where the possible bases are adenine, guanine, cytosine, and thymine(腺嘌呤,鸟嘌…

Common Subsequence Time Limit: 2 Seconds      Memory Limit: 65536 KB A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, ..., xm> another sequence Z = <z1, z2, ..., zk…

Problem Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, ..., xm> another sequence Z = <z1, z2, ..., zk> is a subsequence of X if there exists a stri…