POJ 2155：Matrix 二维树状数组
摘要：
MatrixTime Limit:3000MSMemory Limit:65536KTotal Submissions:21757Accepted:8141DescriptionGiven an N*N matrix A, whose elements are either 0 or 1. A[i,... 阅读全文
posted @ 2015-10-09 11:59 光速小子 阅读(149) 评论(0) 推荐(0) 编辑
