摘要: 1017 - Exact cover 时间限制:15秒 内存限制:128兆 自定评测 6110 次提交 3226 次通过 题目描述There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a s 阅读全文
posted @ 2015-03-12 16:09 Decouple 阅读(316) 评论(0) 推荐(0) 编辑