终有绿洲摇曳在沙漠

1.题目描述：最短路Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 61286    Accepted Submission(s): 26935Problem Description在每年的校赛里

1.题目描述：The Shortest PathTime Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3314    Accepted Submission(s): 1097Problem Descriptio

1.题目描述：find the longest of the shortestTime Limit: 1000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3281    Accepted Submission(s): 1209Pro

1.题目描述：find the mincost routeTime Limit: 1000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5112    Accepted Submission(s): 2055Problem Descr

1.题目描述：Harry Potter and the Final BattleTime Limit: 5000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 3535    Accepted Submission(s): 1009Pr

1.题目描述：Delay Constrained Maximum Capacity PathTime Limit: 10000/10000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 1915    Accepted Submission(s): 641

1.题目描述：Big Christmas TreeTime Limit: 3000MS Memory Limit: 131072KTotal Submissions: 24123 Accepted: 5236DescriptionChristmas is coming to KCM city. Suby

1.题目描述：六度分离Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9350    Accepted Submission(s): 3781Problem Description1967年，美国

1.题目描述：Free DIY TourTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6695    Accepted Submission(s): 2183Problem Description

1.题目描述：Free DIY TourTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6695    Accepted Submission(s): 2183Problem Description

1.题目描述：昂贵的聘礼Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 48548 Accepted: 14487Description年轻的探险家来到了一个印第安部落里。在那里他和酋长的女儿相爱了，于是便向酋长去求亲。酋长要他用10000

1.题目描述：ROADSTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 15020 Accepted: 5427DescriptionN cities named with numbers 1 ... N are connected wit

1.题目描述：SkiingTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 4893 Accepted: 1304 Special JudgeDescriptionBessie and the rest of Farmer John'

1.题目描述：Ferry LanesTime Limit: 2000MS Memory Limit: 131072KTotal Submissions: 5025 Accepted: 1101DescriptionArthur lives in a small city which is partition

1.题目描述：Cow HurdlesTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 7876 Accepted: 3524DescriptionFarmer John wants the cows to prepare for the co

1.题目描述：一个人的旅行Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 36760    Accepted Submission(s): 12526Problem Description虽然草儿

B. Complete The Graph 题目链接 分类：构造、最短路1.题意概述给你由nn个点mm条边构成的图，有些边权是0，现在要你把所有的0改成正整数，问你是否存在一种改法使得由ss到tt的最短路是LL？2.解题思路我们先把那些边权是0的边去掉，跑一遍spfa，如果这样条件下的最短路都小于LL那肯定是无解！如果上述没出现说明可能有解，然后再利用spfa的贪心性质，先给那

1.题目描述：Heavy TransportationTime Limit: 3000MS Memory Limit: 30000KTotal Submissions: 34783 Accepted: 9177DescriptionBackground Hugo Heavy is happy. Afte

1.题目描述：In ActionTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5964    Accepted Submission(s): 2007Problem DescriptionS

1.题目描述：Invitation CardsTime Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 4061    Accepted Submission(s): 1848Problem Descriptio

1.题目描述：HDU TodayTime Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 27903    Accepted Submission(s): 6782Problem Description经

1.题目描述：Choose the best routeTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 14192    Accepted Submission(s): 4641Problem Descr

1.题目描述：畅通工程续Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 51236    Accepted Submission(s): 19090Problem Description某省自从实

1.题目描述：Minimum Transport CostTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10691    Accepted Submission(s): 2954Problem Desc

1.题目描述：ArbitrageTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7671    Accepted Submission(s): 3554Problem DescriptionArb

1.题目描述：RoadblocksTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 14158 Accepted: 4976DescriptionBessie has moved to a small farm and sometimes e

1.题目描述：FlightTime Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 2942    Accepted Submission(s): 612Problem DescriptionRecen

1.题目描述：WormholesTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 49130 Accepted: 18114DescriptionWhile exploring his many farms, Farmer John has

1.题目描述：ADACYCLE - Ada and Cycleno tags Ada the Ladybug is on a trip in Bugindia. There are many cities and some uni-directional roads connecting them. Ada is wondering about the sh

1.题目描述：XYZZYTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5281    Accepted Submission(s): 1503Problem DescriptionIt has

1.题目描述：题目描述2.题意概述：给出n,m,s,t，n表示有n个点，m表示有m条边，然后给出m行数据表示m条边，每条边的数据有连接两点的序号以及该边的权值，问说从点s到点t的最短路径是多少。3.解题思路：分析题目的样列可知，这一题是要用邻接矩阵来存储无向图，所以要注意无向图怎么存储在邻阶表。连接表的横列有N项，纵列也是N项。形成的N*N项每项都被称为边结点，每项都有纵横

1.题目描述：Shortest PathTime Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5443    Accepted Submission(s): 1332Problem Description

1.题目描述：题目描述2.题意概述：有一层不超过100层的大楼， 有n个电梯，它们的速度都不同。 而且每个电梯只能到达指定的那些楼层，而且它们都有各自的速度（即上升一层或下降一层所用的时间）。 如果一个人在某层走出电梯，要换一个电梯乘，那么他要等60秒（不管要等的是那个电梯，即使是刚刚出来的那个电梯也要等60秒）。在0层搭电梯出发时不需要等待。 一个人从0层开始，目的地是k

1.题目描述：最短路径问题Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 25786    Accepted Submission(s): 7695Problem Description给你n个点

1.题目描述：Cow ContestTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 11280 Accepted: 6262DescriptionN (1 ≤ N ≤ 100) cows, conveniently numbered 1..

1.题目描述：Saving James BondTime Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3347    Accepted Submission(s): 698Problem Description

差分约束系统一、预备知识最短路基本性质#define inf 0x3fffffff#define M 1005 //最大点数struct edge{ int v, w, next;}e[10005]; //估计好有多少条边int pre[M], cnt, dist[M], n;bool inq[M];//注意初始化void init (...