刚刚被ysy在联考里虐了,差点爆tan(pi/4),只好来bzoj寻求安慰再被虐一次233 (tarjan是什么智障东西不想打我好弱啊,tarjan都不会打) Description 每一头牛的愿望就是变成一头最受欢迎的牛.现在有N头牛,给你M对整数(A,B),表示牛A认为牛B受欢迎. 这 种关系是具有传递性的,如果A认为B受欢迎,B认为C受欢迎,那么牛A也认为牛C受欢迎.你的任务是求出有多少头 牛被所有的牛认为是受欢迎的. Input 第一行两个数N,M. 接下来M行,每行两个数A,B,意思是…

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…

http://poj.org/problem?id=2186 Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 20191   Accepted: 8193 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…

Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 27698   Accepted: 11148 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: 23445   Accepted: 9605 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 &l…

id=2186">http://poj.org/problem? id=2186 Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 23819   Accepted: 9767 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <=…