题目链接:http://poj.org/problem?id=3468 A Simple Problem with Integers Time Limit: 5000MS Memory Limit: 131072K Total Submissions: 56005 Accepted: 16903 Case Time Limit: 2000MS Description You have N integers, A1, A2, ... , AN. You need to deal with…
A Simple Problem with Integers [题目链接]A Simple Problem with Integers [题目类型]线段树 成段增减+区间求和 &题解: 线段树 成段增减+区间求和 模板题 这种题真的应该理解并且可以流畅的独立码出来了 [时间复杂度]\(O(nlogn)\) &代码: #include <iostream> #include <cstdio> #include <cstring> using namespa…
题目链接 Description During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally speaking, villages connected by tunnels lay in a line. Except the two at the ends, every village…