Billboard (HDU 2795) Hdu 2795 注意到每个广告的长度是1,因此可以将每这一张广告牌当成一个数列表示,每个初始值为w.使用线段树维护这个数列,每次查询为找到这个数列第一个大于等于x的位置,每次修改操作为将找到的位置值-x 线段树功能:区间查询+单点更新 #include <cstdio> #include <utility> #include <queue> #include <cstring> #define scan(x) sc…

题目链接 Problem Description At the entrance to the university, there is a huge rectangular billboard of size h*w (h is its height and w is its width). The board is the place where all possible announcements are posted: nearest programming competitions,…

题目链接:https://vjudge.net/problem/HDU-2795 思路:h = 1e9行不通,因为广告是1*w的,所以n个广告最多只需要 h = n的高度,那么h=2e5就可以接受了. 用树状数组维护区间最大值. 从前往后区间查询哪一大块块首先满足条件,然后一直缩小区间,直到区间长度等于1,输出答案,然后修改该点可用的w, 再修改区间最大值. #include <iostream> #include <algorithm> #include <map>…

Billboard Time Limit: 20000/8000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 19225    Accepted Submission(s): 8042 Problem Description At the entrance to the university, there is a huge rectangular billboard of…

Billboard Time Limit:8000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 2795 Appoint description:  System Crawler  (2015-04-10) Description At the entrance to the university, there is a huge rectangular billb…

HDU 2795 Billboard(宣传栏贴公告,线段树应用) ACM 题目地址:HDU 2795 Billboard 题意:  要在h*w宣传栏上贴公告,每条公告的高度都是为1的,并且每条公告都要尽量贴最上面最靠左边的,给你一系列的公告的长度,问它们能不能贴上. 分析:  不是非常好想,只是想到了就非常好写了.  仅仅要把宣传栏倒过来就好办了,这时候就是变成有h条位置能够填公告,填放公告时就能够尽量找最左边的合适的位置来放了.  能够用线段树实现,查找的复杂度是O(logn),须要注意的坑点…

Billboard Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=2795 Description At the entrance to the university, there is a huge rectangular billboard of size h*w (h is its height and w is its width). The board is…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2795 Billboard Time Limit: 20000/8000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 13050    Accepted Submission(s): 5651 Problem Description At the entrance to the un…

任意门:http://acm.hdu.edu.cn/showproblem.php?pid=2795 Billboard Time Limit: 20000/8000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 28743    Accepted Submission(s): 11651 Problem Description At the entrance to the un…

http://acm.hdu.edu.cn/showproblem.php?pid=2795 Billboard Problem Description   At the entrance to the university, there is a huge rectangular billboard of size h*w (h is its height and w is its width). The board is the place where all possible announ…