1674: [Usaco2005]Part Acquisition Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 337  Solved: 162[Submit][Status][Discuss] Description The cows have been sent on a mission through space to acquire a new milking machine for their barn. They are flying…

1674: [Usaco2005]Part Acquisition Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 259  Solved: 114[Submit][Status] Description The cows have been sent on a mission through space to acquire a new milking machine for their barn. They are flying through a…

1674: [Usaco2005]Part Acquisition Time Limit: 5 Sec  Memory Limit: 64 MB Description The cows have been sent on a mission through space to acquire a new milking machine for their barn. They are flying through a cluster of stars containing N (1 <= N <…

http://www.lydsy.com/JudgeOnline/problem.php?id=1674 想法很简单...将每一种看做一个点,如果i可以换成j,那么连边到j.. 费用都为1.. 然后拥有过的物品就是最短路+1.. #include <cstdio> #include <cstring> #include <cmath> #include <string> #include <iostream> #include <algor…

Description The cows have been sent on a mission through space to acquire a new milking machine for their barn. They are flying through a cluster of stars containing N (1 <= N <= 50,000) planets, each with a trading post. The cows have determined wh…

大神们都在刷usaco,我也来水一水 1606: [Usaco2008 Dec]Hay For Sale 购买干草   裸背包 1607: [Usaco2008 Dec]Patting Heads 轻拍牛头 神转化,筛法 1609: [Usaco2008 Feb]Eating Together麻烦的聚餐  LIS 1610: [Usaco2008 Feb]Line连线游戏 排序 1611: [Usaco2008 Feb]Meteor Shower流星雨  BFS 1612: [Usaco2008…

bzoj上的usaco题目还是很好的(我被虐的很惨. 有必要总结整理一下. 1592: [Usaco2008 Feb]Making the Grade 路面修整 一开始没有想到离散化.然后离散化之后就很好做了.F[I,j]表示第i个点,高度>=j或<=j,f[I,j]=min(f[i-1,j]+abs(b[j]-a[i]),f[I,j-1]) 1593: [Usaco2008 Feb]Hotel 旅馆 线段树 ★1594: [Usaco2008 Jan]猜数游戏 二分答案然后写线段树维护 15…

Search GO 说明:输入题号直接进入相应题目,如需搜索含数字的题目,请在关键词前加单引号 Problem ID Title Source AC Submit Y 1000 A+B Problem 10983 18765 Y 1036 [ZJOI2008]树的统计Count 5293 13132 Y 1588 [HNOI2002]营业额统计 5056 13607 1001 [BeiJing2006]狼抓兔子 4526 18386 Y 2002 [Hnoi2010]Bounce 弹飞绵羊 43…

3392: [Usaco2005 Feb]Part Acquisition 交易 Time Limit: 5 Sec  Memory Limit: 128 MBSubmit: 26  Solved: 18[Submit][Status] Description     奶牛们接到了寻找一种新型挤奶机的任务,为此它们准备依次经过N(1≤N≤50000)颗行星,在行星上进行交易．为了方便,奶牛们已经给可能出现的K(1≤K≤1000)种货物进行了由1到K的标号．由于这些行星都不是十分发达．没有流通的货…

Description     奶牛们接到了寻找一种新型挤奶机的任务,为此它们准备依次经过N(1≤N≤50000)颗行星,在行星上进行交易．为了方便,奶牛们已经给可能出现的K(1≤K≤1000)种货物进行了由1到K的标号．由于这些行星都不是十分发达．没有流通的货币,所以在每个市场里都只能用固定的一种货物去换取另一种货物．    奶牛们带着一种上好的饲料从地球出发,希望进行最少的交易,最终得到所需要的机器．饲料的标号为1,所需要的机器的标号为K.如果任务无法完成,输出-1. Input     第…