摘要: 题目描述 对于集合N={1,2,…,n}的子集,定义一个称之为“小于”的关系: 设S1={X1,X2,…,Xi},(X1 include include include include include include include using namespace std; const int ma 阅读全文
posted @ 2017-09-10 21:32 rsqppp 阅读(155) 评论(0) 推荐(0)