题目传送门 题意:训练指南P207 分析:因为矩阵不超过20行,所以可以建20条线段的线段树,支持两个区间更新以及区间查询. #include <bits/stdc++.h> using namespace std; #define lson l, mid, o << 1 #define rson mid + 1, r, o << 1 | 1 typedef long long ll; const int INF = 0x3f3f3f3f; const int N =…
Copying Data Time Limit:2000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u Description We often have to copy large volumes of information. Such operation can take up many computer resources. Therefore, in this problem you are advised to come…
Just a Hook Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 23229 Accepted Submission(s): 11634 Problem Description In the game of DotA, Pudge’s meat hook is actually the most horrible thing…