F - Sequence operation 题解:这个题目不是一个特别难的题目,但是呢,写了好久,首先线段树难敲,其次就是bug难找,最后这个代码都被我改的乱七八糟的了,这个有两个地方要注意一下,一个是取反的lazy标志,每次取反都是对1取异或,还有一个也是这个取反的lazy标志,这个标志再第一种操作之后要进行消除. #include <cstdio> #include <cstdlib> #include <queue> #include <algorithm…
//Accepted 14560 KB 1532 ms //线段树 区间合并 /* 0 a b 把[a, b]区间内的所有数全变成0 1 a b 把[a, b]区间内的所有数全变成1 2 a b 把[a,b]区间内的所有数全部取反,也就是说把所有的0变成1,把所有的1变成0 3 a b 询问[a, b]区间内总共有多少个1 4 a b 询问[a, b]区间内最多有多少个连续的1 */ #include <cstdio> #include <cstring> #include <…
//Accepted 3728 KB 1079 ms //线段树 区间合并 #include <cstdio> #include <cstring> #include <iostream> #include <queue> #include <cmath> #include <algorithm> using namespace std; /** * This is a documentation comment block * 如果…
//Accepted 3911 750MS 9872K //线段树 区间合并 #include <cstdio> #include <cstring> #include <iostream> #include <queue> #include <cmath> #include <algorithm> using namespace std; /** * This is a documentation comment block * 如…
SPOJ GSS1_Can you answer these queries I(线段树区间合并) 标签(空格分隔): 线段树区间合并 题目链接 GSS1 - Can you answer these queries I You are given a sequence A1, A[2], ..., A[N] . ( |A[i]| ≤ 15007 , 1 ≤ N ≤ 50000 ). A query is defined as follows: Query(x,y) = Max { a[i]+a…
线段树区间合并就挺麻烦了,再套个树链就更加鬼畜,不过除了代码量大就没什么其他的了.. 一些细节:线段树每个结点用结构体保存,pushup等合并函数改成返回一个结构体,这样好写一些 struct Seg{ int lc,rc,tot; Seg(){lc=rc=-;tot=;} }; Seg seg[maxn<<];]; Seg pushup(Seg a,Seg b){ if(!a.tot)return b; if(!b.tot)return a; Seg res; res.lc=a.lc,res…
poj3667 HotelTime Limit: 3000MS Memory Limit: 65536KTotal Submissions: 18925 Accepted: 8242Description The cows are journeying north to Thunder Bay in Canada to gain cultural enrichment and enjoy a vacation on the sunny shores of Lake Superior. Bessi…
LCIS Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8337    Accepted Submission(s): 3566 Problem Description Given n integers.You have two operations:U A B: replace the Ath number by B. (index…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1540 题目: 题意:总共有n个村庄,有q次操作,每次操作分为摧毁一座村庄,修复一座村庄,和查询与询问的村庄相连接的城市数量. 思路:线段树+区间合并. 代码实现如下: #include <set> #include <map> #include <queue> #include <stack> #include <cmath> #include &l…
LCIS Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6069    Accepted Submission(s): 2635 Problem Description Given n integers.You have two operations:U A B: replace the Ath number by B. (index…