2018年7月22日
6348: Milking Order(二分答案+拓扑排序)
摘要： 题目描述 Farmer John's N cows (1≤N≤105), numbered 1…N as always, happen to have too much time on their hooves. As a result, they have worked out a complex 阅读全文
posted @ 2018-07-22 22:11 行远山 阅读(295) 评论(0) 推荐(0) 编辑