P2863 [USACO06JAN]牛的舞会The Cow Prom 123通过 221提交 题目提供者 洛谷OnlineJudge 标签 USACO 2006 云端 难度 普及+/提高 时空限制 1s / 128MB 题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new…

传送门 有向图,找点数大于1的强连通分量个数 ——代码 #include <stack> #include <cstdio> #include <cstring> #include <iostream> ; int n, m, cnt, idx, size, ans; ], next[MAXN << ]; int dfn[MAXN], low[MAXN], belong[MAXN], tot[MAXN]; bool ins[MAXN]; std:…

P2863 [USACO06JAN]牛的舞会The Cow Prom 求点数$>1$的强连通分量数,裸的Tanjan模板. #include<iostream> #include<cstdio> #include<cstring> using namespace std; int min(int &a,int &b){return a<b?a:b;} #define N 10002 #define M 50002 int n,m,clo,df…

洛谷——P2863 [USACO06JAN]牛的舞会The Cow Prom 题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round D…

题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round Dance. Only cows can perform the Round D…

题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round Dance. Only cows can perform the Round D…

https://www.luogu.org/problem/show?pid=2863#sub 题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform th…

题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round Dance. Only cows can perform the Round D…

题目描述 The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round Dance. Only cows can perform the Round D…

传送门 题目大意:形成一个环的牛可以跳舞,几个环连在一起是个小组,求几个小组. 题解:tarjian缩点后,求缩的点包含的原来的点数大于1的个数. 代码: #include<iostream> #include<cstdio> #include<cstring> #define maxn 10009 using namespace std; int n,m,sumedge,top,sumclr,tim,ans; int Stack[maxn],instack[maxn]…

题目传送门 这个题还是个缩点的板子题...... 答案就是size大于1的强连通分量的个数 加一个size来统计就好了 #include <iostream> #include <cstdlib> #include <cstdio> using namespace std; const int N=1e5+5; const int M=5e5+5; struct edge{ int to,next; }e[M]; int n,m,dfn[N],low[N],cnt,he…

题目链接 赤裸裸的板子,就加一个特判就行.直接上代码 #include<stdio.h> #include<algorithm> #include<iostream> using namespace std; ];//记录入没入栈. ];//特判*1,是强连通分量就直接过了. ]; ];//手写栈. void push(int x)//手写栈ing. { ins[x]=true; stack[++top]=x; return ; } void pop() { ins[s…

题目链接:https://www.luogu.org/problemnew/show/P2863 求强连通分量大小>自己单个点的 #include <stack> #include <cstdio> #include <cstring> #include <iostream> #include <algorithm> using namespace std; const int maxn = 100000 + 10; struct edge…

代码是粘的,庆幸我还能看懂. #include<iostream> #include<cstdio> #include<cmath> #include<algorithm> #include<stack> #include<vector> using namespace std; struct node { int num,par; }p[]; ,x,y,cnt; vector<]; ]; ]; stack<int>…

每日一题 day11 打卡 Analysis 好久没大Tarjan了,练习练习模板. 只要在Tarjan后扫一遍si数组看是否大于1就好了. #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #define maxn 10000+10 #define maxm 50000+10 using namespace std; inline int read() { ;…

一道tarjan的模板水题 在这里还是着重解释一下tarjan的代码 #include<iostream> #include<cstdio> #include<algorithm> using namespace std; int n,m; int cnt;//记录强联通分量的个数 int visitnum;//遍历的步数 int dfn[100010];//记录元素第一次被访问的步数 int low[100010];//包含i的强联通分量最早被访问的步数 int nu…

题面 题解 \(Tarjan\)板子题. 统计出大小大于\(1\)的强连通分量数量输出即可. 代码 #include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <algorithm> #include <cmath> #include <cctype> #define gI gi #define itn int #…

本来分好组之后,就确定好了每个人要学什么,我去学数据结构啊. 因为前一段时间遇到一道题是用Lca写的,不会,就去学. 然后发现Lca分为在线算法和离线算法,在线算法有含RMQ的ST算法,前面的博客也写了.离线算法是基于DFS的Tarjan算法. 然后就打算去学一下Tarjan,因为以前也看过但是没看完,就打算学一下,因为Tarjan算法是图论的内容,然后就让图论选手教了我一下大环套小环的怎么推,然后就尴尬了. 我是学数据结构的,没有要去抢图论的内容学... 我也看了线段树了啊. 学完这个Tarj…

传送门:https://www.luogu.org/problemnew/show/P2863 思路:tarjan模板题,之前会的tarjan,一直想学缩点到底是什么操作,发现就是把同组的放在一个数组里(并查集可能又会有),或者重新建图:不知道为什么百度不到讲缩点的blog. #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <s…

题目描述 约翰的N (2 <= N <= 10,000)只奶牛非常兴奋,因为这是舞会之夜!她们穿上礼服和新鞋子,别 上鲜花,她们要表演圆舞. 只有奶牛才能表演这种圆舞.圆舞需要一些绳索和一个圆形的水池.奶牛们围在池边站好, 顺时针顺序由1到N编号.每只奶牛都面对水池,这样她就能看到其他的每一只奶牛. 为了跳这种圆舞,她们找了 M(2<M< 50000)条绳索.若干只奶牛的蹄上握着绳索的一端, 绳索沿顺时针方绕过水池,另一端则捆在另一些奶牛身上.这样,一些奶牛就可以牵引另一些奶 牛.…

1654: [Usaco2006 Jan]The Cow Prom 奶牛舞会 Time Limit: 5 Sec  Memory Limit: 64 MB Description The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that ton…

http://poj.org/problem?id=3180 The Cow Prom Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 1428   Accepted: 903 Description The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete…

P2875 [USACO07FEB]牛的词汇The Cow Lexicon 三维dp 它慢,但它好写. 直接根据题意设三个状态: $f[i][j][k]$表示主串扫到第$i$个字母,匹配到第$j$个单词的第$k$位可以留下的最多字符数 当该位不选时,就传递上一位的数据$f[i][j][k]=f[i-1][j][k]$ 当该位可以匹配时: $if(a[i]==b[j][k]\&\&f[i-1][j][k-1])$$f[i][j][k]=max(f[i][j][k],f[i-1][j][k-1…

洛谷 2953 [USACO09OPEN]牛的数字游戏Cow Digit Game 题目描述 Bessie is playing a number game against Farmer John, and she wants you to help her achieve victory. Game i starts with an integer N_i (1 <= N_i <= 1,000,000). Bessie goes first, and then the two players…

P2875 [USACO07FEB]牛的词汇The Cow Lexicon 题目描述 Few know that the cows have their own dictionary with W (1 ≤ W ≤ 600) words, each containing no more 25 of the characters 'a'..'z'. Their cowmunication system, based on mooing, is not very accurate; sometime…

The Cow Prom Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 2373   Accepted: 1402 Description The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes.…

Description The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round Dance. Only cows can perform the…

Description The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round Dance. Only cows can perform the…

Description The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in their finest gowns, complete with corsages and new shoes. They know that tonight they will each try to perform the Round Dance. Only cows can perform the…

http://www.lydsy.com/JudgeOnline/problem.php?id=1654 请不要被这句话误导..“ 如果两只成功跳圆舞的奶牛有绳索相连,那她们可以同属一个组合．” 这句话没啥用.. #include <cstdio> #include <cstring> #include <cmath> #include <string> #include <iostream> #include <algorithm>…