随笔分类 -  网络流

POJ-1273Drainage Ditches(网络流入门题，最大流)
摘要：Every time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by water for awhi 阅读全文
posted @ 2019-08-09 10:58 black_hole6 阅读(384) 评论(0) 推荐(0)