摘要：
Popular CowsTime Limit: 2000MSMemory Limit: 65536KTotal Submissions: 20472Accepted: 8316DescriptionEvery cow's dream is to become the most popular cow in the herd. In a herd of N (1 1，即有cow认为 no cow is popular，所以答案为0；否则出度为0的强连通分量为1，因为至少有一个点，则答案为该强连通分量的点数，证明如下： 1.因为仅该强连通分量为0表明其它强连通分量所有点间接/直接地指向该强 阅读全文
