---恢复内容开始--- 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2962 Trucking Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 11428    Accepted Submission(s): 1104 Problem Description A certain lo…

Trucking Problem Description A certain local trucking company would like to transport some goods on a cargo truck from one place to another. It is desirable to transport as much goods as possible each trip. Unfortunately, one cannot always use the ro…

Trucking 题目连接: https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2224 Descriptionww.co A certain local trucking company would like to transport some goods on a cargo truck from one place to…

Trucking Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 11419    Accepted Submission(s): 1101 Problem Description A certain local trucking company would like to transport some goods on a carg…

题目链接:https://vjudge.net/contest/244167#problem/E 这题做了好久都还是超时,看了博客才发现可以用二分+最短路(dijkstra和spfa都可以),也可以用dijikstra先算一遍可以求的最大高度,再用dijkstra算一遍这个高度下的最短路,这个应该快一点. 题意:第一行输入n,m表示n个点,m条边,接下来m行,每行有四个数字u,v,h,w,其中u,v表示这条边连接的两个城市,h表示在这条边上货车可以通过的最大高度,w表示距离,最后一行输入三个数字…

http://www.lydsy.com/JudgeOnline/problem.php?id=2642 题意: n个瞭望台,形成一个凸n边形.这些瞭望台的保护范围是这个凸包内的任意点. 敌人进攻时,会炸毁一些瞭望台,使得总部暴露在新的保护范围之外. 选择一个点作为总部,使得敌人在任何情况下需要炸坏的瞭望台数目尽量多 任何情况指,假设需炸毁m个,无论炸毁哪m个,剩下的瞭望台都不能保护总部 输出这个数目 凸壳上的点顺时针输入 若敌人只能炸一次,那么总部应选在 所有点i+2到点i组成的有向直线的左侧…

Prime Bases Problem Description Given any integer base b >= 2, it is well known that every positive integer n can be uniquely represented in base b. That is, we can write n = a0 + a1*b + a2*b*b + a3*b*b*b + ... where the coefficients a0, a1, a2, a3,…

Dance Problem Description For a dance to be proper in the Altered Culture of Machinema, it must abide by the following rules: 1. A dip can only appear 1 or 2 steps after a jiggle, or before a twirl, as in:* ...jiggle dip...* ...jiggle stomp dip...* .…

Close Enough Computations Problem Description The nutritional food label has become ubiquitous. A sample label is shown to the right. On the label the number of calories and the number of grams of fat, carbohydrate, and protein are given as integers.…

不定时更新博客,该博客仅仅是一篇关于最短路的题集,题目顺序随机. 算法思想什么的,我就随便说(复)说(制)咯: Dijkstra算法:以起始点为中心向外层层扩展,直到扩展到终点为止.有贪心的意思. 大部分题用Dij+队列优化都能解决..但有负权边不行哦. Bellman-Ford:反复对边集E中的每条边进行松弛操作. 求含负权图(有负环输出错误提示)的单源最短路径,效率很低,至于对多余松弛的优化就是设置个标记,还是很慢,不如写SPFA. 判断负环:在每次松弛时把每条边都更新一下,若在n-1次松弛…