[bzoj3062][Usaco13Feb]Taxi_贪心

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[bzoj3062][Usaco13Feb]Taxi_贪心

Taxi bzoj-3062 Usaco13Feb 题目大意:有n个奶牛想坐出租车.第i头奶牛在起点a[i]等候,想坐出租车到b[i].Bessie从0出车,车上只能坐一头奶牛.她必须完成所有奶牛的要求而且她必须从0到m. 注释:$1\le n\le 10^5$,$1\le m\le 10^9$,1$\le$a[i],b[i]$\le$m.Bessie可以不用将一头奶牛一次性从起点送到重点,也就是说她可以中途扔下奶牛. 想法:好题!完全没想到,看了题解之后还想了很久题解为什么对.我们将所有的起点…

bzoj3062[Usaco2013 Feb]Taxi*

bzoj3062[Usaco2013 Feb]Taxi 题意: Bessie在农场上为其他奶牛提供出租车服务,她必须赶到这些奶牛的起始位置,并把他们带到它们的目的地.Bessie的车很小,所以她只能一次只能搭载一头奶牛.N只奶牛的起始位置和结束为止都是已知的,请确定Bessie从0点出发完成任务再到m点的最少行程.Bessie意识到,要使所得到的行程最短,Bessie可能将在沿途中让奶牛上车或下车而并不一定将一头奶牛从起点直接送到终点.n≤100000,m≤1000000000. 题解: 神贪心…

BZOJ 1692: [Usaco2007 Dec]队列变换 [后缀数组贪心]

1692: [Usaco2007 Dec]队列变换 Time Limit: 5 Sec Memory Limit: 64 MBSubmit: 1383 Solved: 582[Submit][Status][Discuss] Description FJ打算带他的N(1 <= N <= 30,000)头奶牛去参加一年一度的“全美农场主大奖赛”.在这场比赛中,每个参赛者都必须让他的奶牛排成一列,然后领她们从裁判席前依次走过. 今年,竞赛委员会在接受队伍报名时,采用了一种新的登记规则:他们把所…

HDOJ 1051. Wooden Sticks 贪心结构体排序

Wooden Sticks Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 15564 Accepted Submission(s): 6405 Problem Description There is a pile of n wooden sticks. The length and weight of each stick a…

HDOJ 1009. Fat Mouse' Trade 贪心结构体排序

FatMouse' Trade Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 56784 Accepted Submission(s): 19009 Problem Description FatMouse prepared M pounds of cat food, ready to trade with the cats g…

BZOJ 1691: [Usaco2007 Dec]挑剔的美食家 [treap 贪心]

1691: [Usaco2007 Dec]挑剔的美食家 Time Limit: 5 Sec Memory Limit: 64 MBSubmit: 786 Solved: 391[Submit][Status][Discuss] Description 与很多奶牛一样,Farmer John那群养尊处优的奶牛们对食物越来越挑剔,随便拿堆草就能打发她们午饭的日子自然是一去不返了.现在,Farmer John不得不去牧草专供商那里购买大量美味多汁的牧草,来满足他那N(1 <= N <= 100,…

【Codeforces 738D】Sea Battle（贪心）

http://codeforces.com/contest/738/problem/D Galya is playing one-dimensional Sea Battle on a 1 × n grid. In this game a ships are placed on the grid. Each of the ships consists of bconsecutive cells. No cell can be part of two ships, however, the shi…