题面 题意:给你n(2w5)个点,m条边(7w5)有k(1e3)辆车停在某些点上的,然后他们都想尽快去1号点,同时出发,同一个点不允许同时经过, 如果多辆车同时到达一个点,他们就会堵塞,这时候只能选择通过一辆车,其他车相当于就地爆炸 问最后能有多少车到1号点 题解:想象如果2辆车的最短路不相交,那么他们就互相之间没有了影响,再想象对于一般的图,如何控制度数的,显然有一个网络流的做法 可以走的边就连,度数为1,现在我们考虑每部分最短路长度相等的点集才会受到影响.如果2个点到1的最短路长度一样,那么…

原题下载:http://icpc.baylor.edu/download/worldfinals/problems/icpc2013.pdf 题目翻译: 试题来源 ACM/ICPC World Finals 2013 C 问题描述 你现在要为智能汽车负责设计一种很高级的集中管理系统.目的是利用全球信息指导早上从郊区赶往市中心的乘客如何在避免交通堵塞的情况下更好地到达城市中心. 不幸的是,乘客们对城市非常了解,而且都相当自私,你不能简单地甩给他们一条比平常走的还要长的路径(否则他们会直接无视你的指…

http://acm.hdu.edu.cn/showproblem.php?pid=4710 Balls Rearrangement Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 735    Accepted Submission(s): 305 Problem Description Bob has N balls and A b…

http://acm.hdu.edu.cn/showproblem.php?pid=4708 Rotation Lock Puzzle Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description Alice was felling into a cave. She found a strange door with a number square m…

http://acm.hdu.edu.cn/showproblem.php?pid=4715 Difference Between Primes Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description All you know Goldbach conjecture.That is to say, Every even integer great…

http://acm.hdu.edu.cn/showproblem.php?pid=4712 Hamming Distance Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 1610    Accepted Submission(s): 630 Problem Description (From wikipedia) For bina…

hduoj 4706 Children's Day 2013 ACM/ICPC Asia Regional Online —— Warmup Herding Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2005    Accepted Submission(s): 563 Problem Description Little Joh…

http://acm.hdu.edu.cn/showproblem.php?pid=4707 Pet Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description One day, Lin Ji wake up in the morning and found that his pethamster escaped. He searched in th…

http://acm.hdu.edu.cn/showproblem.php?pid=4706 Children's Day Time Limit: 2000/1000 MS (Java/Others)     Memory Limit: 32768/32768 K (Java/Others) Problem Description Today is Children's Day. Some children ask you to output a big letter 'N'. 'N' is c…

原题下载 : http://icpc.baylor.edu/download/worldfinals/problems/icpc2013.pdf 这道题其实是2013年我AC的第一道题,非常的开心,这两天把2013年World Finals我能写的题都写的差不多了(我只写了A B C D F H I这七道题)开始着手来写解题报告,部分题目在UVaOJ上还存在超时,但是Tsinsen上面都AC了,题目的翻译转自清橙上国家集训队员们的翻译.每道题会提供题目翻译.题目大意.题目思路与解法.复杂度分析.…