2016年5月21日
Matrix (二维树状数组)
摘要： Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. Initially we have A[i, 阅读全文
posted @ 2016-05-21 19:09 Vmetrio 阅读(370) 评论(0) 推荐(0)