Matrix
Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 17226 Accepted: 6461
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, j] = 0 (1
Original: https://www.cnblogs.com/kuangbin/p/3749086.html
Author: kuangbin
Title: POJ 2155 Matrix (二维线段树)
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