传送门 MPI Maelstrom Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5711   Accepted: 3552 Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierar…

MPI Maelstrom Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6044   Accepted: 3761 Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchic…

题目大意: 给你 1到n ,  n个计算机进行数据传输, 问从1为起点传输到所有点的最短时间是多少, 其实就是算 1 到所有点的时间中最长的那个点. 然后是数据 给你一个n 代表有n个点, 然后给你一个邻接矩阵, 只有一半,另一半自己补 下面是练习的代码. 分别用了Floyd 和 Dijkstra 还有 Spfa(邻接矩阵版) #include <iostream> #include <cmath> #include <cstring> #include <cst…

POJ 1502 MPI Maelstrom / UVA 432 MPI Maelstrom / SCU 1068 MPI Maelstrom / UVALive 5398 MPI Maelstrom /ZOJ 1291 MPI Maelstrom (最短路径) Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shar…

MPI Maelstrom Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 4017   Accepted: 2412 Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchic…

MPI Maelstrom Time Limit : 2000/1000ms (Java/Other)   Memory Limit : 20000/10000K (Java/Other) Total Submission(s) : 2   Accepted Submission(s) : 1 Problem Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo…

MPI Maelstrom BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchical communication subsystem. Valentine McKee's research advisor, Jack Swigert, has asked her to…

题目链接:http://poj.org/problem?id=1502 题意是给你n个点,然后是以下三角的形式输入i j以及权值,x就不算 #include <iostream> #include <cstdio> #include <cstring> #include <queue> using namespace std; ; const int INF = 1e9; typedef pair <int , int> P; struct da…

Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchical communication subsystem. Valentine McKee's research advisor, Jack Swigert, has asked her to be…

题目: BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchical communication subsystem. Valentine McKee's research advisor, Jack Swigert, has asked her to benchmark…

题目大意:求点1到所有点最短路径的最大值 思路:水题,单源最短路,网上解题清一色dijkstra,但是点数小于100显然floyd更简洁嘛 #include<cstdio> #include<string.h> #define maxn 101 #define inf 100000 using namespace std; int read(){ int f=1,x=0;char ch=getchar(); while(ch<'0'||ch>'9'){if(ch=='x…

MPI Maelstrom Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5547   Accepted: 3458 Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchic…

题目链接:http://poj.org/problem?id=1502 Description BIT has recently taken delivery of their processor Apollo Odyssey distributed shared memory machine with a hierarchical communication subsystem. Valentine McKee's research advisor, Jack Swigert, has ask…

题目链接:http://poj.org/problem?id=1502 题意:一个处理器给n-1个处理器发送广播,问最短时间.广播时并发,也就是各个路径就大的一方.输入如果是x的话说明两个处理器不能相互通信.输入是矩阵的左三角. 题解:一个最短路的裸题吧.输入的时候注意一下字符的转换.floyd爆一遍之后再对每个路径找最大值即可. 代码: #include<cstdio> #include<cstdlib> #include<cstring> #include<i…

题意 : 给出 N 个点,各个点之间的路径长度用给出的下三角矩阵表示,上上角矩阵和下三角矩阵是一样的,主对角线的元素都是 0 代表自己到达自己不用花费,现在问你从 1 到 N 的最短路,矩阵的 x 代表点间无法互相到达 分析 : 最短路模板…… 就是在输入的时候需要将字符串变成整数.自己写也可以,也可以使用 atoi(char *)函数,其作用是将字符串数组变成整数,复杂度为 O(n) #include<bits/stdc++.h> using namespace std; ; const i…

题意:要从起点的石头跳到终点的石头,设The frog distance为从起点到终点的某一路径中两点间距离的最大值,问在从起点到终点的所有路径中The frog distance的最小值为多少. 分析: 解法一:Dijkstra,修改最短路模板,d[u]表示从起点到u的所有路径中两点间距离的最大值的最小值. #include<cstdio> #include<cstring> #include<cstdlib> #include<cctype> #incl…

链接:http://poj.org/problem?id=1502 MPI Maelstrom Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5249   Accepted: 3237 Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed share…

MPI Maelstrom Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6499   Accepted: 4036 Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchic…

MPI Maelstrom 题目链接: http://acm.hust.edu.cn/vjudge/contest/122685#problem/G Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchical communication subsy…

题目链接:http://poj.org/problem?id=3635 题意题解等均参考:POJ 3635 - Full Tank? - [最短路变形][优先队列优化Dijkstra]. 一些口胡: 说实话,上次写类似的二维状态最短路Gym 101873C - Joyride - [最短路变形][优先队列优化Dijkstra],我没能把手写二叉堆优化Dijkstra的给写出来. 这次费了点功夫,也算是给写出来了,需要注意的点还是有点多的.而且我终于深刻理解为啥不推荐手写二叉堆了,主要是代码量相比…

POJ 3013 Big Christmas Tree(最短路Dijkstra+优先队列优化,SPFA) ACM 题目地址:POJ 3013 题意:  圣诞树是由n个节点和e个边构成的,点编号1-n.树根为编号1,选择一些边.使得全部节点构成一棵树.选择边的代价是(子孙的点的重量)×(这条边的价值). 求代价最小多少. 分析:  单看每一个点被计算过的代价,非常明显就是从根到节点的边的价值.所以这是个简单的单源最短路问题. 只是坑点还是非常多的. 点的数量高达5w个,用矩阵存不行.仅仅能用边存.…

MPI Maelstrom 总时间限制:  1000ms 内存限制:  65536kB 描述 BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchical communication subsystem. Valentine McKee's research advisor…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2544 题目分析:比较简单的最短路算法应用.题目告知起点与终点的位置,以及各路口之间路径到达所需的时间,要求输出起点到终点的最短时间. /* 最短路 Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 35043 Accepted Submission…

图论中一个经典问题就是求最短路.最为基础和最为经典的算法莫过于 Dijkstra 和 Floyd 算法,一个是贪心算法,一个是动态规划.这也是算法中的两大经典代表.用一个简单图在纸上一步一步演算,也是非常好理解的.理解透自己多默写几次就可以记住,机试时基本的工作往往就是高速构造邻接矩阵了. 对于平时的练习,一个非常厉害的 ACMer  @BenLin_BLY 说:"刷水题能够加快我们编程的速度,做经典则能够让我们触类旁通,初期假设遇见非常多编不出.最好还是就写伪代码,理思路.在纸上进行总体分析和…

一下午都在学最短路dijkstra算法,总算是优化到了我能达到的水平的最快水准,然后列举一下我的优化历史,顺便总结总结 最朴素算法: 邻接矩阵存边+贪心||dp思想,几乎纯暴力,luoguTLE+MLE, 算优点??:但好写好想,比下面的代码短了差不多一半. #include <iostream> #include <cstdio> #include <algorithm> using namespace std; int main() { ][],point,i,j,…

HUD.2544 最短路 (Dijkstra) 题意分析 1表示起点,n表示起点(或者颠倒过来也可以) 建立无向图 从n或者1跑dij即可. 代码总览 #include <bits/stdc++.h> #define nmax 110 #define inf 1e8 using namespace std; int mp[nmax][nmax]; int shortpath[nmax]; bool visit[nmax]; int n,m; void dij(int s) { int cur…

layout: post title: 训练指南 UVALive - 4080(最短路Dijkstra + 边修改 + 最短路树) author: "luowentaoaa" catalog: true mathjax: true tags: - Dijkstra - 最短路树 - 图论 - 训练指南 Warfare And Logistics UVALive - 4080 题意 ①先求任意两点间的最短路径累加和,其中不连通的边权为L ②删除任意一条边,求全局最短路径和的最大值 题解…

layout: post title: 训练指南 UVA - 10917(最短路Dijkstra + 基础DP) author: "luowentaoaa" catalog: true mathjax: true tags: - 最短路 - 基础DP - Dijkstra - 图论 - 训练指南 Walk Through the Forest UVA - 10917 题意 Jimmy打算每天沿着一条不同的路走,而且,他只能沿着满足如下条件的道路(A,B):存在一条从B出发回家的路径,比…

layout: post title: 训练指南 UVA - 11374(最短路Dijkstra + 记录路径 + 模板) author: "luowentaoaa" catalog: true mathjax: true tags: - 最短路 - Dijkstra - 图论 - 训练指南 Airport Express UVA - 11374 题意 机场快线有经济线和商业线,现在分别给出经济线和商业线的的路线,现在只能坐一站商业线,其他坐经济线,问从起点到终点的最短用时是多少,还有…

MPI Maelstrom Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 12087   Accepted: 7464 Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shared memory machine with a hierarchi…