题目描述 Farmer John has noticed that his cows often move between nearby fields. Taking this into account, he wants to plant enough grass in each of his fields not only for the cows situated initially in that field, but also for cows visiting from nearby…

题目描述 FJ发现他的牛经常跑到附近的草地去吃草,FJ准备给每个草地种足够的草供这个草地以及附近草地的奶牛来吃.FJ有N个草地(1<=N<=100000),有N-1条双向道路连接这些草地,FJ精心设计了这些道路使每两个草地有且仅有一条简单路径连接.第i个草场有Ci头牛,有时候奶牛会走过K条道路到其他草地吃草.FJ想知道每个草场最多可能有的奶牛数量Mi,即所有走过K条道路后可能到达i的奶牛总数. 输入格式 Line 1: Two space-separated integers, N and K…

USACO 2012 FEB SILVER 一.题目概览 中文题目名称 矩形草地 奶牛IDs 搬家 英文题目名称 planting cowids relocate 可执行文件名 planting cowids relocate 输入文件名 planting.in cowids.in relocate.in 输出文件名 planting.out cowids.out relocate.out 每个测试点时限 1秒 1秒 1秒 测试点数目 10 10 10 每个测试点分值 10 10 10 比较方式…

2590: [Usaco2012 Feb]Cow Coupons Time Limit: 10 Sec Memory Limit: 128 MB Submit: 349 Solved: 181 [Submit][Status][Discuss] Description Farmer John needs new cows! There are N cows for sale (1 <= N <= 50,000), and FJ has to spend no more than his bud…

传送门1:http://www.usaco.org/index.php?page=viewproblem2&cpid=118 传送门2:http://www.lydsy.com/JudgeOnline/problem.php?id=2590 又挂了一道贪心,好烦啊. 这一题应该要想到“撤回”操作就好办了.假设现在已经没有优惠券了,那么如果你想以优惠价格买下一头牛,就要撤回以前的用优惠券买的牛,具体就是加回p[i] - c[i]就行了,可以理解为花这么多钱买一张优惠券.然后就是维护3个小根堆了.…

Description Farmer  John  needs  new  cows! There  are  N  cows  for  sale (1 <= N <= 50,000), and  FJ  has  to  spend  no  more  than  his  budget  of  M  units  of  money (1 <= M <=$10^{14}$). Cow  i  costs $ P_i$  money (1 <=$ P_i$ <=…

USACO 2012 JAN(题目二) 一.题目概览 中文题目名称 叠干草 分干草 奶牛联盟 英文题目名称 stacking baleshare cowrun 可执行文件名 stacking baleshare cowrun 输入文件名 stacking.in baleshare.in cowrun.in 输出文件名 stacking.out baleshare.out cowrun.out 每个测试点时限 1秒 1秒 1秒 测试点数目 10 10 10 每个测试点分值 10 10 10 比较方…

USACO 2012 JAN(题目一) 一.题目概览 中文题目名称 礼物 配送路线 游戏组合技 英文题目名称 gifts delivery combos 可执行文件名 gifts delivery combos 输入文件名 gifts.in delivery.in combos.in 输出文件名 gifts.out delivery.out combos.out 每个测试点时限 1秒 1秒 1秒 测试点数目 10 10 10 每个测试点分值 10 10 10 比较方式 全文比较 全文比较 全文比…

USACO 2014 FEB SILVER 一.题目概览 中文题目名称 自动打字 路障 神秘代码 英文题目名称 auto rblock scode 可执行文件名 auto rblock scode 输入文件名 auto.in rblock.in scode.in 输出文件名 auto.out rblock.out scode.out 每个测试点时限 1秒 1秒 1秒 测试点数目 10 10 10 每个测试点分值 10 10 10 比较方式 全文比较 全文比较 全文比较 二.运行内存限制 运行内存…

53 奶牛赛跑 约翰有 N 头奶牛,他为这些奶牛准备了一个周长为 C 的环形跑牛场.所有奶牛从起点同时起跑,奶牛在比赛中总是以匀速前进的,第 i 头牛的速度为 Vi.只要有一头奶牛跑完 L 圈之后,比赛就立即结束了.有时候,跑得快的奶牛可以比跑得慢的奶牛多绕赛场几圈,从而在一些时刻超过慢的奶牛.这就是最令观众激动的套圈事件了.请问在整个比赛过程中,套圈事件一共会发生多少次呢?输入格式• 第一行:三个整数 N, L 和 C, 1 ≤ N ≤ 105 , 1 ≤ L ≤ 25000 , 1 ≤ C…

最小最大...又是经典的二分答案做法.. -------------------------------------------------------------------------- #include<cstdio> #include<cstring> #include<algorithm> #include<iostream>   #define rep( i , n ) for( int i = 0 ; i < n ; ++i ) #def…

1734: [Usaco2005 feb]Aggressive cows 愤怒的牛 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 217  Solved: 175[Submit][Status][Discuss] Description Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a st…

Link: USACO 2018 Feb Gold 传送门 A: $dp[i][j][k]$表示前$i$个中有$j$个0且末位为$k$的最优解 状态数$O(n^3)$ #include <bits/stdc++.h> using namespace std; #define X first #define Y second typedef long long ll; typedef pair<int,int> P; ,INF=<<; int n,dat[MAXN],dp…

1734: [Usaco2005 feb]Aggressive cows 愤怒的牛 Description Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a straight line at positions x1,...,xN (0 <= xi <= 1,000,000,000). His C (2 <= C &l…

P3047 [USACO12FEB]附近的牛Nearby Cows 农民约翰已经注意到他的奶牛经常在附近的田野之间移动.考虑到这一点,他想在每一块土地上种上足够的草,不仅是为了最初在这片土地上的奶牛,而且是为了从附近的田地里去吃草的奶牛. 具体来说,FJ的农场由N块田野构成(1 <= n <= 100,000),每两块田野之间有一条无向边连接(总共n-1条边).FJ设计了农场,任何两个田野i和j之间,有且只有一条路径连接i和j.第 i块田野是C(i)头牛的住所,尽管奶牛们有时会通过k条路到达其…

[Usaco2005 feb]Aggressive cows 愤怒的牛 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 407  Solved: 325[Submit][Status][Discuss] Description Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a straight…

P3047 [USACO12FEB]附近的牛Nearby Cows 题目描述 Farmer John has noticed that his cows often move between nearby fields. Taking this into account, he wants to plant enough grass in each of his fields not only for the cows situated initially in that field, but…

P3047 [USACO12FEB]附近的牛Nearby Cows 题目描述 Farmer John has noticed that his cows often move between nearby fields. Taking this into account, he wants to plant enough grass in each of his fields not only for the cows situated initially in that field, but…

USACO 2009 Feb 股票市场 Stock Market Description 尽管奶牛们天生谨慎,她们仍然在住房抵押信贷市场中大受打击,现在她们准备在股市 上碰碰运气.贝西开挂了,她知道S只股票在今后D天内的价格. 假设她一开始有M元钱,怎么操作才能在D天后赚到最多的钱?股票在市场上的供应量 可以看成是无限的,但买卖股票必须以整数为最小交易单位. 举一个牛市的例子.假设贝西有10元本金,股票价格如下: 股票 今天的单价 明天的单价 后天的单价 A 10 15 15 B 13 11 2…

NC24325 [USACO 2012 Mar S]Flowerpot 题目 题目描述 Farmer John has been having trouble making his plants grow, and needs your help to water them properly. You are given the locations of N raindrops (1 <= N <= 100,000) in the 2D plane, where y represents ve…

NC24724 [USACO 2010 Feb S]Chocolate Eating 题目 题目描述 Bessie has received \(N (1 <= N <= 50,000)\) chocolates from the bulls, but doesn't want to eat them too quickly, so she wants to plan out her chocolate eating schedule for the next \(D (1 <= D &…

NC25136 [USACO 2006 Ope B]Cows on a Leash 题目 题目描述 给定如图所示的若干个长条.你可以在某一行的任意两个数之间作一条竖线,从而把这个长条切开,并可能切开其他长条.问至少要切几刀才能把每一根长条都切开.样例如图需要切两刀. 注意:输入文件每行的第一个数表示开始的位置,而第二个数表示长度. 输入描述 Line \(1\) : A single integer, \(N\) (\(2 <= N <= 32000\)) Lines \(2 \cdots N…

题面 题目描述 Farmer John has noticed that his cows often move between nearby fields. Taking this into account, he wants to plant enough grass in each of his fields not only for the cows situated initially in that field, but also for cows visiting from nea…

题目描述 Farmer John has noticed that his cows often move between nearby fields. Taking this into account, he wants to plant enough grass in each of his fields not only for the cows situated initially in that field, but also for cows visiting from nearby…

题目描述 Farmer John has noticed that his cows often move between nearby fields. Taking this into account, he wants to plant enough grass in each of his fields not only for the cows situated initially in that field, but also for cows visiting from nearby…

USACO 2012JAN(题目三) 一.题目概览 中文题目名称 放牧 登山 奶牛排队 英文题目名称 grazing climb lineup 可执行文件名 grazing climb lineup 输入文件名 grazing.in climb.in lineup.in 输出文件名 grazing.out climb.out lineup.out 每个测试点时限 1秒 1秒 1秒 测试点数目 10 10 10 每个测试点分值 10 10 10 比较方式 全文比较 全文比较 全文比较 二.运行内存…

Description Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a straight line at positions x1,...,xN (0 <= xi <= 1,000,000,000). His C (2 <= C <= N) cows don't like this barn layout an…

传送门1:http://www.usaco.org/index.php?page=viewproblem2&cpid=138 传送门2:http://www.lydsy.com/JudgeOnline/problem.php?id=2678 最开始没看到要将那些书按顺序放!!一定是按顺序!我还以为是自己安排那个书架,白费了我好久时间. 然而看对题之后仍然不会... 令f(i)表示前i本书已经放到书架上,且第i本是某个书架的最后一本的最小高度和,则 f(i) = min { f(j) + max…

传送门:http://www.usaco.org/index.php?page=viewproblem2&cpid=126 好题啊好题,一开始就输给了这道题的想法! 先把原始状态以及目标状态换一种表示方式,比如输入数据是的初始状态是1 2 3 4,表示成1 2 2 3 3 3 4 4 4 4,目标状态是4 3 2 0,表示成1 1 1 1 2 2 2 3 3.那么这题就是求把原始状态转化为目标状态的最小代价,只有三种操作, add, remove, transport,所以这就是一个求Edit…

传送门:http://www.usaco.org/index.php?page=viewproblem2&cpid=127 又是一道这种题目,遇到一次跪一次,这次终于硬着头皮看懂了题解,但是谢了代码之后还是wa了3个点(共20个),实在是找不出哪里错了,略烦... 题解真的不想写了,贴个链接叭... http://blog.csdn.net/kanosword/article/details/52585972 这道题比较冷门,官方题解看得不是太懂,上面那个链接讲得比较清楚.…