来源poj2186 Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <= M <= 50,000) ordered pairs of the form (A, B) that tell you that cow A thinks that cow B is popular.…

Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 29642   Accepted: 11996 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <= M &…

[POJ2186]Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 34752   Accepted: 14155 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1…

poj 2186 Popular Cows 题意: 有N头牛, 给出M对关系, 如(1,2)代表1欢迎2, 关系是单向的且能够传递, 即1欢迎2不代表2欢迎1, 可是假设2也欢迎3那么1也欢迎3. 求被全部牛都欢迎的牛的数量. 限制: 1 <= N <= 10000 1 <= M <= 50000 思路: Kosaraju算法, 看缩点后拓扑序的终点有多少头牛, 且要推断是不是全部强连通分量都连向它. Kosaraju算法.分拆完连通分量后,也完毕了拓扑序. /*poj 2186…

缩点练习 洛谷 P3387 [模板]缩点 缩点 解题思路: 都说是模板了...先缩点把有环图转换成DAG 然后拓扑排序即可 #include <bits/stdc++.h> using namespace std; /* freopen("k.in", "r", stdin); freopen("k.out", "w", stdout); */ //clock_t c1 = clock(); //std::cerr…

传送门 Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 31808   Accepted: 12921 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <=…

Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 31241   Accepted: 12691 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <= M &…

Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 29908   Accepted: 12131 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <= M &…

Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 31815   Accepted: 12927 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <= M &…

                                                              Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 30999   Accepted: 12580 Description Every cow's dream is to become the most popular cow in the herd. In a herd of…