cows 第12页

USACO3.1.5--Contact

Contact IOI'98 The cows have developed a new interest in scanning the universe outside their farm

·2015-11-12 11:17

USACO2.4.4--Bessie Come Home

Bessie Come Home Kolstad & Burch It's dinner time, and the cows are out in their separate pastures

·2015-11-12 11:12

USACO2.4.1--The Tamworth Two

The Tamworth Two BIO '98 - Richard Forster A pair of cows is loose somewhere in the forest.

·2015-11-12 11:10

USACO2.3.2--Cow Pedigrees

Cow Pedigrees Silviu Ganceanu -- 2003 Farmer John is considering purchasing a new herd of cows

·2015-11-12 11:09

USACO2.3.4--Money Systems

Money Systems The cows have not only created their own government but they have chosen to create their

·2015-11-12 11:08

USACO2.1.4--Healthy Holsteins

Healthy Holsteins Burch & Kolstad Farmer John prides himself on having the healthiest dairy cows

·2015-11-12 11:02

USACO1.5.3--Superprime Rib

Superprime Rib Butchering Farmer John's cows always yields the best prime rib.

·2015-11-12 11:59

USACO1.3.2--Barn Repair

It was a dark and stormy night that ripped the roof and gates off the stalls that hold Farmer John's cows

·2015-11-12 11:53

USACO1.3.3--Calf Flac

Calf Flac It is said that if you give an infinite number of cows an infinite number of heavy-duty laptops

·2015-11-12 11:53

poj 3280 Cheapest Palindrome(区间DP)

Total Submissions: 5995 Accepted: 2922 Description Keeping track of all the cows

·2015-11-12 10:29

POJ 2392 Space Elevator(多重背包)

id=2392 Description The cows are going to space!

·2015-11-12 10:28

USACO1.21Milking Cows

Milking Cows Three farmers rise at 5 am each morning and head for the barn to milk three cows.

·2015-11-12 09:13

[hdu][3045][Picnic Cows]

题目：http://acm.hdu.edu.cn/showproblem.php?pid=3045 View Code #include <stdio.h> #include <string.h> #include <math.h> #include <algorithm> #define ll __int64 #defin

·2015-11-12 09:51

[poj][2186][Popular Cows]

题目：http://poj.org/problem?id=2186 题意：给一张有向图，求一些点的个数，这些点满足其他所有点都能直接或间接指向它。方法：tarjan+缩点 View Code #include <stdio.h>#include <string.h>#include <math.h>#include <algorithm&

·2015-11-12 09:49

POJ 2186 Popular Cows（Tarjan）

http://poj.org/problem?id=2186 题意：给你n头牛，m对关系，每对关系由两个编号组成，u和v代表着u认为v是受欢迎的，如果1认为2是受欢迎的，2认为3是受欢迎的，那1认为3也是受欢迎的。思路 :强联通分量的Tarjan做法，将这些牛之间的关系看成一个有向图，最受欢迎的那个牛的那个点一定是出度为0的点。Tarjan的基本资料：http://hi.baidu.com

·2015-11-12 09:28

POJ 3621 Sightseeing Cows（SPFA + 构造负环）

题意：牛可以从任意点出发, 每个点有欢乐值, 一个点可以去多次, 但是欢乐值只增加一次, 每条边有时间消耗, 求一条回路使得总欢乐值/总时间最大. 思路： 1. 对于有向边 (u, v) ，v 的权值可以表示成 d[u,v] * delta - fun[v]，我们的目标是使 delta 尽量大 2. 如果 delta 偏大，则可能图中不存在负环，这时要缩小 delta，如果 delt

·2015-11-12 08:36

【POJ2185】【KMP + HASH】Milking Grid

Description Every morning when they are milked, the Farmer John's cows form a rectangular grid that

·2015-11-11 19:14

CF 174 Div1

A Cows and Sequence 线段树... B Cow Program 比较有启发的一点是可以用边来表示可达关系.

·2015-11-11 18:42

模拟/usaco 1.2.1 Milking Cows

题意　　给出n个工作时间段问连续最大空闲时间段和连续最大工作时间段分别是多少分析　　按照每个时间段的起始排序，记录一下当前的s和t，如果按照循环，下一个时间段在当前t的后面，则更新空闲时间段和s,t 如果下一个时间段的起始在t之前，则更新t和工作时间段第一次WA，没看明白题就写了，第二次WA，尼

·2015-11-11 18:01

POj 2186 Popular Cows[连通分量]

题目大意：给出N头牛，有M种关系u, v。代表u牛崇拜v牛。要求找出有多少头牛被所有牛崇拜着题目链接：http://poj.org/problem?id=2186解题思路：1>求出强连通分量，标记每头牛属于哪个分量内2>进行缩点,计算连通分量的个数x,给出的M组关系重新构图。u，v若属不于一个连通分量内out[belong[u]]++;3>统计x个连通分量出度。如果超过1个的连通

·2015-11-11 17:40

POJ 3621 Sightseeing Cows

　　http://poj.org/problem?id=3621 　　这两天一直在复习代码，因为好久都不写东西了，而且转了语言，除了Dinic我什么都不会写…… 　　题目大意：给你一个有向图，边有权（T），点有权（F），使求一个环，使得最大化∑(F)/∑(T)。　　这是一个最优比率环问题，与上一个最有比率生成树问题相似，都是01分数规划的考点。　　设 ans≥∑(F)/∑(T) , 有

·2015-11-11 17:07

USACO 5.1 fencing the cows——计算几何/凸包模板

终于进入第五章了，第四节最后一个题好无聊= =。此题纯凸包模板： /*ID:zlqest11LANG: C++TASK: fc*/#include <iostream>#include <cstdio>#include <cstring>#include <cmath>#include <algorithm>using names

·2015-11-11 17:28

USACO1.2.1--Milking Cows

Milking Cows Three farmers rise at 5 am each morning and head for the barn to milk three cows.

·2015-11-11 17:59

USACO1.2.3--Name That Number

Name That Number Among the large Wisconsin cattle ranchers, it is customary to brand cows with serial

·2015-11-11 17:58

Codeforces #174 Div2

A Cows and Primitive Roots 　　原根，目前只有暴力求解，看了百度百科才知道。

·2015-11-11 17:23

POJ 2387 Til the Cows Come Home --最短路模板题

Dijkstra模板题，也可以用Floyd算法。关于Dijkstra算法有两种写法，只有一点细节不同，思想是一样的。写法1： #include <iostream> #include <cstdio> #include <cstring> #include <cmath> #include <algor

·2015-11-11 16:12

USACO 5.1 Fencing the Cows(凸包)

注意传参的类型。。。模版啊。。。 1 /* 2 ID:cuizhe 3 LANG: C++ 4 TASK: fc 5 */ 6 #include <cstdio> 7 #include <cstring> 8 #include <cmath> 9 #include <queue> 10 #include &l

·2015-11-11 15:50

POJ 2186 Popular Cows(Tarjan)

看着DISCUSS各种改。。Tarjan每个点属于那个连通块，枚举度数，统计出度。如果出度为0的有一个，这个块的个数就是结果。出度为0的大于1，则没有。 1 #include <iostream> 2 #include <cstring> 3 #include <cstdio> 4 #include <cstdlib>

·2015-11-11 15:36

poj 1985 Cow Marathon 树的直径

id=1985 After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more

·2015-11-11 14:27

poj 3264 Balanced Lineup 区间极值RMQ

id=3264 For the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line

·2015-11-11 14:18

poj 1986 Distance Queries LCA

id=1986 Farmer John's cows refused to run in his marathon since he chose a path much too long for their

·2015-11-11 14:07

poj 3281 Dining 最大流

id=3281 Cows are such finicky eaters.

·2015-11-11 14:04

POJ 3267 The Cow Lexicon

Total Submissions: 7909 Accepted: 3711 Description Few know that the cows

·2015-11-11 13:01

ASP.net用法系列：如何从基类调用LINQ/EF类的属性

如果有各种动物，比如Dogs/Cats/Cows/...

·2015-11-11 13:52

POJ 2387 Til the Cows Come Home

题目大意：给你N个点 T条边，求N->1的最短路 1 #include <iostream> 2 #include <cstdlib> 3 #include <cstdio> 4 #include <algorithm> 5 #include <vector> 6 #include &

·2015-11-11 13:00

G - Balanced Lineup POJ 3264 (线段树+区间查询无更新)

%I64u Submit Status Practice POJ 3264 Description For the daily milking, Farmer John's N cows

·2015-11-11 12:48

树状数组 POJ 2481 Cows

题目传送门 1 #include <cstdio> 2 #include <cstring> 3 #include <algorithm> 4 using namespace std; 5 6 const int MAX_N = 100000 + 10; 7 int cnt[MAX_N]; 8 int ans[MAX_N];

·2015-11-11 12:23

River Hopscotch(二分)

65536K Total Submissions: 5473 Accepted: 2379 Description Every year the cows

·2015-11-11 12:46

Round Numbers （排列组合）

Limit: 65536K Total Submissions: 7558 Accepted: 2596 Description The cows

·2015-11-11 12:36

The Cow Lexicon(dp)

65536K Total Submissions: 7290 Accepted: 3409 Description Few know that the cows

·2015-11-11 12:34

Gold Balanced Lineup(哈希表)

Total Submissions: 10711 Accepted: 3182 Description Farmer John's N cows

·2015-11-11 12:21

POJ2749 Building roads

Submissions: 4522 Accepted: 1485 Description Farmer John's farm has N barns, and there are some cows

·2015-11-11 12:25

POJ3252 Round Numbers

Limit: 65536K Total Submissions: 4877 Accepted: 1664 Description The cows

·2015-11-11 12:20

POJ2186 Popular Cows

·2015-11-11 12:59

POJ24810 - Cows

题目大意给定N对二元组（s,e),对于第i对二元组(s[i],e[i]),在前1~i-1对二元组中计算出符合这样要求的二元组（s[j],e[j])的总数量，s[j]<=s[i],e[j]>=e[i]，并且e[j]-s[j]>e[i]-s[i]。题解先按e降序排序，如果e相等则按s升序排序，这样处理之后，接下来就和POJ2352的stars的处理是一样的，对于第i个数，只

·2015-11-11 12:29

poj 3348:Cows（计算几何，求凸包面积）

Cows Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 6199

·2015-11-11 11:21

Codeforces 383A - Milking cows

原题地址：http://codeforces.com/problemset/problem/383/A 题目大意：有 n 头奶牛，全部看着左边或者右边，现在开始给奶牛挤奶，给一头奶牛挤奶时，所有能看到它的奶牛会损失一升奶，已经挤过的奶牛不会再损失，求一种挤奶顺序，使得失去的牛奶数最少。(1 <= n <= 200000) 题目分析：考场上看到它的时候想：这不就是一个裸的线段树么……

·2015-11-11 11:11

USACO section1.2 Milking Cows 挤牛奶（区间覆盖）

题目：http://www.wzoi.org/usaco/12%5C211.asp 额。。。。纠结了很久。。。。开始没区别时间和时刻。。。。区间是(star,end]都赋值为1 /*ID: qiufeih1PROG: milk2LANG: C++*/#include <iostream>#include <fstream>#in

·2015-11-11 10:08

USACP section1.2 Milking Cows

把所有区间（如果能）合并起来，求最长连续区间长度和最长间隔长度（两个区间之间，如果只有一个区间为0）； /* PROG: milk2 LANG: C++ */ # include <cstdio> # include <cstdlib> # define N 5000 + 10 struct val{ int s, t; } a[N

·2015-11-11 07:08

POJ 3264 Balanced Lineup

---------------------------------------------- Description For the daily milking, Farmer John's N cows

·2015-11-11 07:55

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