摘要: 题目链接 DescriptionAn entropy encoder is a data encoding method that achieves lossless data compression by encoding a message with "wasted" or "extra" information removed. In other words, entropy encoding removes information that was not necessary in the first place to accurately en 阅读全文
posted @ 2013-04-05 15:56 xindoo 阅读(181) 评论(0) 推荐(0) 编辑
摘要: 由于英语极差,看了半天也没看懂题目,最后参考了其他人的题解才搞懂题目,我就直接把题意贴过来了 题意:这道题目只是题意自己就去理解了半天,大概题意如下:给出i一个n*n的矩阵,初始化为均为0,还有关于这个矩阵的几种操作,操作如下:命令1:(X Y A)对位于坐标(X Y)的值加A;命令2:(L B R T)求出位于L#include const int maxn = 1030;int n, a[maxn][maxn];int lowbit(int x){ return x & (-x);}void update(int i, int j, int v){ int t; w... 阅读全文
posted @ 2013-04-05 10:55 xindoo 阅读(136) 评论(0) 推荐(0) 编辑