2019年8月25日
Exact cover HUST - 1017 DLX，不重复覆盖
摘要： There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of 阅读全文
posted @ 2019-08-25 15:56 木子川 阅读(211) 评论(0) 推荐(0)