link:http://codeforces.com/problemset/problem/4/D #include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #include <cctype> #include <algorithm> #include <queue> #include…

给出两个字符串A B,求A与B的最长公共子序列(子序列不要求是连续的).   比如两个串为:   abcicba abdkscab   ab是两个串的子序列,abc也是,abca也是,其中abca是这两个字符串最长的子序列. Input 第1行:字符串A 第2行:字符串B (A,B的长度 <= 1000) Output 输出最长的子序列,如果有多个,随意输出1个. Input示例 abcicba abdkscab Output示例 abca #include <bits/stdc++.h>…

题意:第一列,给出老鼠的重量,第二列,给出老鼠的速度,要证明老鼠的重量越大,速度越小,给出最多老鼠的数量,并说明第几只. 思路:先将老鼠按照重量从大到小排序,然后速度是从小到大,求最长上升子序列,学习下怎么输出最长上升子序列的路径,输出最长上升子序列路径有很多种方法,这里面是记录每个数字在最长上升子序列中的下标.因为在维护最长上升子序列数组的时候,我们会遍历到每一个元素.代码里面有样例: //最长上升子序列输出路径 /* 1 7 3 5 2 记录在递增序列中的下标 逆序检索 1 2 2 3 2…

题意: 给出两个字符串A B,求A与B的最长公共子序列(子序列不要求是连续的). 比如两个串为: abcicba abdkscab ab是两个串的子序列,abc也是,abca也是,其中abca是这两个字符串最长的子序列. 输出最长的子序列,如果有多个,随意输出1个.   思路: DP,同时DP记录路径.   代码: string a,b; int f[1005][1005]; int path[1005][1005]; void _print(int x,int y){ if(!x||!y) r…

Scandinavians often make vacation during the Easter holidays in the largest ski resort Are. Are provides fantastic ski conditions, many ski lifts and slopes of various difficulty profiles. However, some lifts go faster than others, and some are so po…

A. Shortest path of the king time limit per test 1 second memory limit per test 64 megabytes input standard input output standard output The king is left alone on the chessboard. In spite of this loneliness, he doesn't lose heart, because he has busi…

compromise Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u   Description In a few months the European Currency Union will become a reality. However, to join the club, the Maastricht criteria must be fulfilled, and this is…

摘自 https://www.cnblogs.com/hapjin/p/5572483.html 这位大佬写的对理解DP也很有帮助,我就直接摘抄过来了,代码部分来自我做过的题 一,问题描述 给定两个字符串,求解这两个字符串的最长公共子序列(Longest Common Sequence).比如字符串1:BDCABA:字符串2:ABCBDAB 则这两个字符串的最长公共子序列长度为4,最长公共子序列是:BCBA 二,算法求解 这是一个动态规划的题目.对于可用动态规划求解的问题,一般有两个特征:①最优…

D. Mysterious Present 题目连接: http://www.codeforces.com/contest/4/problem/D Description Peter decided to wish happy birthday to his friend from Australia and send him a card. To make his present more mysterious, he decided to make a chain. Chain here i…

http://codeforces.com/contest/4/problem/D 题目大意: 给出n个信封,这n个信封有长和宽,给出卡片的尺寸,求取能够装入卡片的最长的序列,序列满足后一个的长和宽一定大于前一个,求最长的这个序列的长度,并且给出一组可行解. 思路:最长上升子序列 #include<cstdio> #include<cmath> #include<cstring> #include<algorithm> #include<iostrea…