题目链接 二维树状数组 #include<iostream> #include<math.h> #include<algorithm> #include<stdlib.h> using namespace std; #define ll long long #define re(i,n) for(int i=0;i<n;i++) ; int c[maxn][maxn]; int n, q; int lowbit(int x){ return x&…
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…
Matrix Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 17880 Accepted: 6709 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…
Matrix Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 25004 Accepted: 9261 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…
http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=1859 Matrix Searching Time Limit: 10 Seconds Memory Limit: 32768 KB Given an n*n matrix A, whose entries Ai,j are integer numbers ( 1 <= i <= n, 1 <= j <= n ). An operation FIND t…