Jimmy experiences a lot of stress at work these days, especially since his accident made working difficult. To relax after a hard day, he likes to walk home. To make things even nicer, his office is on one side of a forest, and his house is on the ot…

题目链接:https://vjudge.net/problem/UVA-10917 题目意思:Jimmy下班回家要闯过一下森林,劳累一天后在森林中散步是非常惬意的事,所以他打算每天沿着一条不同的路径回家,欣赏不同的风景,但他也不太想太晚回家,因此他不打算走回头路.换句话来说,他只会沿着如下条件的道路(A,B)走:存在一条从B出发回家的路径,比所有从A出发回家的路径都要短.我们的任务是要找出一共有有多少条不同的回家路径,家的编号是2,公司的编号是1. 题目思路:最短路+dp,我们现在考虑如何dp,…

题目大意:n个点,m条边的无向图.一个人从起点到终点按照下面的走法:从A走向B当A到终点的最小距离比B到终点的最小距离大时.问从起点到终点有多少路径方案. 题目分析:先用dijkstra预处理出终点到每个点的最短路,然后将满足行走条件的A.B(除行走条件外,还要满足一个前提,即A.B之间要有边)用一条有向边连起来(A->B),得到一个DAG,动态规划解决. 代码如下: # include<iostream> # include<cstdio> # include<vec…

Problem    UVA - 10917 - Walk Through the Forest Time Limit: 3000 mSec Problem Description Jimmy experiences a lot of stress at work these days, especially since his accident made working difficult. To relax after a hard day, he likes to walk home. To…

A Walk Through the Forest Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10172    Accepted Submission(s): 3701 Problem Description Jimmy experiences a lot of stress at work these days, especial…

A Walk Through the Forest Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8850    Accepted Submission(s): 3267 Problem Description Jimmy experiences a lot of stress at work these days, especiall…

A Walk Through the Forest Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5679    Accepted Submission(s): 2086 Problem Description Jimmy experiences a lot of stress at work these days, especiall…

A Walk Through the Forest Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4383    Accepted Submission(s): 1573 Problem Description Jimmy experiences a lot of stress at work these days, especiall…

A Walk Through the Forest Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 9081 Accepted Submission(s): 3353 Problem Description Jimmy experiences a lot of stress at work these days, especially sin…

A Walk Through the Forest 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=1142 Description Jimmy experiences a lot of stress at work these days, especially since his accident made working difficult. To relax after a hard day, he likes to walk home. T…