Common permutation Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 5510 Accepted: 1681 Description Given two strings of lowercase letters, a and b, print the longest string x of lowercase letters such that there is a permutation of x t…
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…
1.链接地址: http://poj.org/problem?id=1458 http://bailian.openjudge.cn/practice/1458/ 2.题目: Common Subsequence Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 35411 Accepted: 14080 Description A subsequence of a given sequence is the given…
http://poj.org/problem?id=3415 Common Substrings Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 5805 Accepted: 1911 Description A substring of a string T is defined as: T(i, k)=TiTi+1...Ti+k-1, 1≤i≤i+k-1≤|T|. Given two strings A, B an…
POJ 3187 给定N值,从而确定了数据的范围及长度,暴力枚举数列,接下来类似杨辉三角的递推计算.注permutation从递增有序数列开始枚举,枚举到符合sum值时退出即可 #include <stdio.h> #include <algorithm> using namespace std; int n; int sum; int arr[10][10];//中间结果 int main() { while (scanf("%d %d", &n,&a…
一.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 strict…
题目传送门 POJ 1458 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 ex…
Common Subsequence Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 46387 Accepted: 19045 Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = < x1, x2, ..…
Common Substrings Description A substring of a string T is defined as: T(i, k)=TiTi+1...Ti+k-1, 1≤i≤i+k-1≤|T|. Given two strings A, B and one integer K, we define S, a set of triples (i, j, k): S = {(i, j, k) | k≥K, A(i, k)=B(j, k)}. You are to giv…
Common Subsequence Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 43132 Accepted: 17472 Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = < x1, x2, ..…
Common Subsequence Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 65333 Accepted: 27331 Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = < x1, x2, ..…
题目:http://poj.org/problem?id=3415 先用后缀数组处理出 ht[i]: 用单调栈维护当前位置 ht[i] 对之前的 ht[j] 取 min 的结果,也就是当前的后缀与之前后缀的LCP,其中长度 >= K 的加到答案: 因为单调栈中是一段一段阶梯状的,只存了一段端点的位置,所以再记录一个 cnt 表示这一段的长度,算贡献时乘上 cnt: 因为是两个串之间,所以先统计 B 在 A 排名前的答案,再重复一遍统计 A 在 B 排名前的答案: 但是 ht[i] 是 sa[i]…
Common Subsequence 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 s…
解题思路:先注意到序列和串的区别,序列不需要连续,而串是需要连续的,先由样例abcfbc abfcab画一个表格分析,用dp[i][j]储存当比较到s1[i],s2[j]时最长公共子序列的长度 a b f c a b 0 0 0 0 0 0 0 a 0 1 1 1 1 1 1 b 0 1 2 2 2 2 2 c 0 1 2 …
题目链接Time Limit: 1000MS Memory Limit: 10000K Total Submissions: Accepted: 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 = &…
Common Subsequence Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 46630 Accepted: 19154 Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = < x1, x2, ..…
