Tunnel Warfare Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2396    Accepted Submission(s): 886 Problem Description During the War of Resistance Against Japan, tunnel warfare was carried out…

题目链接:https://vjudge.net/problem/HDU-1540 uring 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…

Tunnel Warfare Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3293    Accepted Submission(s): 1272 Problem Description During the War of Resistance Against Japan, tunnel warfare was carried ou…

Tunnel Warfare 题意:D代表破坏村庄,R代表修复最后被破坏的那个村庄,Q代表询问包括x在内的最大连续区间是多少 思路:一个节点的最大连续区间由(左儿子的最大的连续区间,右儿子的最大连续区间,左儿子的最大连续右区间+右儿子的最大连续左区间)决定 所以线段树的节点应该维护当前节点的最大连续左区间,最大连续右区间,和最大连续区间. 注意更新的时候,如果左儿子全满,父亲节点的左连续区间还要加上右儿子的左区间.反之同理. 查询的时候,可以剪枝,如果是叶子,或为空,或满,则不用往下查询. 查询…

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 was directly con…

B - Tunnel WarfareHDU - 1540 这个有两种方法,一个是区间和并,这个我个人感觉异常恶心 第二种方法就是找最大最小值 kuangbin——线段树专题 H - Tunnel Warfare <-- 这个博客讲的很清楚 #include <cstdio>//法一:最大值最小值法,这个就是每一个点,如果这个点没有被摧毁,那就找到这个点最左边的和最右边的 #include <cstdlib>//最大-最小+1.这个就是这个最大连续长度. #include &l…

题意: 三个操作符 D x:摧毁第x个隧道 R x:修复上一个被摧毁的隧道,将摧毁的隧道入栈,修复就出栈 Q x:查询x所在的最长未摧毁隧道的区间长度. 1.如果当前区间全是未摧毁隧道,返回长度 2.如果在坐儿子的右区间或右儿子的左区间,返回这两个区间长度和 3.继续递归 #include <bits/stdc++.h> #define lson l, m, rt<<1 #define rson m+1, r, rt<<1|1 using namespace std;…

传送门:Color the ball Color the ball Time Limit: 9000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 25511    Accepted Submission(s): 12393 Problem Description N个气球排成一排,从左到右依次编号为1,2,3....N.每次给定2个整数a b(a <= b),lele…

Tunnel Warfare Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1540 Description During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Gene…

Tunnel Warfare Problem 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 e…