Secret Milking Machine Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 12324   Accepted: 3589 Description Farmer John is constructing a new milking machine and wishes to keep it secret as long as possible. He has hidden in it deep within…

题目大意:N个点P条边,令存在T条从1到N的路径,求路径上的边权的最大值最小为多少 思路:做了好多二分+最大流的题了,思路很好出 二分出最大边权后建图,跑dinic 问题是....这题是卡常数的好题!!!!! T了8发以后实在受不了,瞄了眼网上的程序,齐刷刷的邻接矩阵....论邻接矩阵的优越性 但不信邪的我终于反复优化常数后邻接表A了 //TLE的程序 #include <stdio.h> #include <iostream> #include <string.h>…

Secret Milking Machine Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 9658   Accepted: 2859 Description Farmer John is constructing a new milking machine and wishes to keep it secret as long as possible. He has hidden in it deep within…

Description Farmer John is constructing a new milking machine and wishes to keep it secret as long as possible. He has hidden in it deep within his farm and needs to be able to get to the machine without being detected. He must make a total of T (1 <…

题目描述 Farmer John is constructing a new milking machine and wishes to keep it secret as long as possible. He has hidden in it deep within his farm and needs to be able to get to the machine without being detected. He must make a total of T (1 <= T <=…

[Usaco2005 feb]Secret Milking Machine 神秘的挤奶机 题目大意:约翰正在制造一台新型的挤奶机,但他不希望别人知道．他希望尽可能久地隐藏这个秘密．他把挤奶机藏在他的农场里,使它不被发现．在挤奶机制造的过程中,他需要去挤奶机所在的地方T(1≤T≤200)次．他的农场里有秘密的地道,但约翰只在返回的时候用它．农场被划分成N(2≤N≤200)块区域,用1到200标号．这些区域被P(1≤P≤40000)条道路连接,每条路有一个小于10^6的长度L．两块区域之间可能有多条…

Description Farmer John is constructing a new milking machine and wishes to keep it secret as long as possible. He has hidden in it deep within his farm and needs to be able to get to the machine without being detected. He must make a total of T (1 <…

http://poj.org/problem?id=2455 (题目链接) 题意 给出一张n个点,p条边的无向图,需要从1号节点走到n号节点一共T次,每条边只能经过1次,问T次经过的最大的边最小是多少. Solution 很显然,二分答案,然后建图跑最大流即可. 细节 双向边? 代码 // poj2455 #include<algorithm> #include<iostream> #include<cstdlib> #include<cstring> #i…

题目:p条路,连接n个节点,现在需要从节点1到节点n,不重复走过一条路且走t次,最小化这t次中连接两个节点最长的那条路的值. 分析:二分答案,对于<=二分的值的边建边,跑一次最大流即可. #include <set> #include <map> #include <list> #include <cmath> #include <queue> #include <stack> #include <string> #…

原题地址:http://poj.org/problem?id=2455 题目大意:给出一个N个点的无向图,中间有P条边,要求找出从1到n的T条通路,满足它们之间没有公共边,并使得这些通路中经过的最长的边的长度最短.两点之间允许有重边 数据范围:2 <= N <= 200, 1 <= P <= 40,000,1 <= T <= 200,1 <= 每条路的长度L <= 1,000,000 题目分析: 看到“最大值最小”的第一反应就是二分最大长度k,满足T条通路没…