2018年4月28日
【题解】Luogu p2986 [USACO10MAR]伟大的奶牛聚集Great Cow Gat 树型dp
摘要： 题目描述 Bessie is planning the annual Great Cow Gathering for cows all across the country and, of course, she would like to choose the most convenient lo 阅读全文
posted @ 2018-04-28 15:22 bbqub 阅读(288) 评论(0) 推荐(0) 编辑