摘要：
include include include include include include include using namespace std; ///找出入度为0的有且只有一个即可以产生冠军，不用拓扑排序 int du[2005]; bool panDuan(int n)///判断所有点的 阅读全文
摘要：
http://acm.hdu.edu.cn/showproblem.php?pid=2647 题意： 老板要给n个员工发工资最低工资是888； 但是工人们是有要求的 如果输入 a b 表示a的工资要比b的工资高 求出老板最少准备多少工资 include include include include 阅读全文