NOIP之前留的坑 CF1163F Indecisive Taxi Fee 经典问题:删边最短路 在Ta的博客查看 任意找一条最短路E,给E上的点和边新加入一个1~len的编号 最短路上的边变大麻烦 维护l[x],r[x],从1到x最短路最后一个,x到n最短路第一个 在E上的点的编号 特别地,当x在E上时,显然有l[x]=r[x]=id[x] 然后枚举不在最短路上的边,线段树进行覆盖即可 不经过边e的最短路一定会覆盖到e上的(也不取决于最短路树什么样) 所以三遍dij 只要回来重新把在E上的x,…

做法 这里的修改是暂时的 找到一条最短路径\(E\),需要考虑的是将最短路径上的边增大 每个点考虑与\(1/n\)的最短路径在E上前缀/后缀的位置,设\(L_i,R_i\) 考虑每条边\((u,v)\),\(u\)和\(v\)分别在\(E\)上连\(L\)或\(R\),相对于一个桥的形状,桥跨过的边则说明不经过那些边的最短路径 考虑是连续的区间,用线段树统计 将边增大,答案为\(min(\)原最短路径,不经过该边的最短路径\()\)…

Sightseeing Time Limit: 5000ms Memory Limit: 65536KB This problem will be judged on PKU. Original ID: 404664-bit integer IO format: %lld      Java class name: Main   CC and MM arrive at a beautiful city for sightseeing. They have found a map of the c…

一个针对出租车司机有效花费的推荐系统 摘要 GPS技术和新形式的城市地理学改变了手机服务的形式.比如说,丰富的出租车GPS轨迹使得出做租车领域有新方法.事实上,最近很多工作是在使用出租车GPS轨迹数据来开发手机推荐系统.这些系统可以推荐一系列的载客点,为了使得在最短的驾驶距离里最大可能地找到一个乘客.然而,在现实世界中,出租车的收入和有效的驾驶时间息息相关.换句话说,对一个出租车司机来说,在找到一个乘客前知道一个确切地驾驶路径来缩短驾驶时间更加重要.最后,在本文中,我们提出了开发一个收益比高的推…

Description Last September, Hangzhou raised the taxi fares. The original flag-down fare in Hangzhou was 10 yuan, plusing 2 yuan per kilometer after the first 3km and 3 yuan per kilometer after 10km. The waiting fee was 2 yuan per five minutes. Passen…

http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3600 Taxi Fare Time Limit: 2 Seconds      Memory Limit: 65536 KB Last September, Hangzhou raised the taxi fares. The original flag-down fare in Hangzhou was 10 yuan, plusing 2 yuan per kilo…

Problem A: Taxi Fare Time Limit: 2 Seconds Memory Limit: 65536 KB Last September, Hangzhou raised the taxi fares. The original flag-down fare in Hangzhou was 10 yuan, plusing 2 yuan per kilometer after the first 3km and 3 yuan per kilometer after 10k…

Taxi Cab Scheme Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 231    Accepted Submission(s): 142 Problem Description Running a taxi station is not all that simple. Apart from the obvious deman…

Taxi Cab Scheme Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 5710   Accepted: 2393 Description Running a taxi station is not all that simple. Apart from the obvious demand for a centralised coordination of the cabs in order to pick up…

FEE Development Essentials JS Basic function call() and apply() func1.bind(thisObj,arg1...argn) Custom object prototype Serialize object via JSON functions Object oriented in javascript Inheritance APIs Nodejs Global object and variable Module Core m…