Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 37056    Accepted Submission(s): 11153 Problem Description Here is a famous story in Chinese history. "That was about…

Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11572    Accepted Submission(s): 3239 Problem Description Here is a famous story in Chinese history. "That was about 2…

Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18291    Accepted Submission(s): 5327 Problem Description Here is a famous story in Chinese history. "That was about 2…

算法分析: 这个问题很显然可以转化成一个二分图最佳匹配的问题.把田忌的马放左边,把齐王的马放右边.田忌的马A和齐王的B之间,如果田忌的马胜,则连一条权为200的边:如果平局,则连一条权为0的边:如果输,则连一条权为-200的边. 然而我们知道,二分图的最佳匹配算法的复杂度很高,无法满足N＝2000的要求. 我们不妨用贪心思想来分析一下问题.因为田忌掌握有比赛的“主动权”,他总是根据齐王所出的马来分配自己的马,所以这里不妨认为齐王的出马顺序是按马的速度从高到低出的.由这样的假设,我们归纳出如下贪心…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1052 Problem Description Here is a famous story in Chinese history. "That was about 2300 years ago. General Tian Ji was a high official in the country Qi. He likes to play horse racing with the king and…

题目 这道题主要是需要考虑到各种情况:先对马的速度进行排序,然后分情况考虑: 1.当田忌最慢的马比国王最慢的马快则赢一局 2.当田忌最快的马比国王最快的马快则赢一局 3.当田忌最快的马比国王最快的马慢 则用田忌最慢的马和国王最快的马比,输一局 4.当他们最快的马相等时则用 田忌最慢的马和国王最快的马比.[因为自己后面的队友很有可能战胜此时对方的这匹慢马,所以就算自己输一场,队友也能帮忙赢回一场,而胜一场,输一场的收益和打平一场的收益是一样的,而且自己输的时候可以拉对方最快的马下水,给己方最快的马…

题目来源:1052 题目分析:题目说的权值匹配算法,有点误导作用,这道题实际是用贪心来做的. 主要就是规则的设定: 1.田忌最慢的马比国王最慢的马快,就赢一场 2.如果田忌最慢的马比国王最慢的马慢,就让这两匹马比一场,输一场 3.如果田忌最慢的马和国王最慢的马相等,就看 如果田忌最快的马比国王最快的马快,那就比一场,赢 如果田忌最快的马比国王最快的马慢,就让最慢的马和国王最快的马比一场,这一场输 如果田忌最快的马和国王最快的马相等,就看田忌最慢的马是否比国王最快的马慢,如果是,输一场,否则就是所…

http://acm.hdu.edu.cn/showproblem.php? pid=1052 Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 18058    Accepted Submission(s): 5239 Problem Description Here is a f…

思路:先按从小到大排序, 然后从最快的開始比(如果i, j 是最慢的一端, flag1, flag2是最快的一端 ),田的最快的大于king的 则比較,如果等于然后推断,有三种情况: 一:大于则比較,二等于在推断田的最慢的是不是比king的最快的慢,三小于则与king的最快的比較: Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Othe…

Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Problem Description Here is a famous story in Chinese history. “That was about 2300 years ago. General Tian Ji was a high official in the cou…