A Simple Problem with Integers Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://poj.org/problem?id=3468 Description You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operation is to add some given nu
A Simple Problem with Integers Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://poj.org/problem?id=3468 Description You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operation is to add some given nu
Problem DescriptionAs we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is one of them: Yuta has an array A with n numbers. Then he makes m operations on it. There are three ty
题目链接 //注意取模! #include<cstdio> #include<cctype> using namespace std; const int N=1e5+5; int n,mod,Sum[N<<2],aTag[N<<2],mTag[N<<2]; inline int read() { int now=0,f=1;register char c=getchar(); for(;!isdigit(c);c=getchar()) if(c
题目链接:http://acm.uestc.edu.cn/#/problem/show/1344 区间加等差数列本质上就是区间修改区间查询,本来想用线段树做,结果这个题就是卡空间和时间……不得已学了区间修改区间查询的树状数组. #include<bits/stdc++.h> using namespace std; ; +; int a[maxn]; int N; int tree[maxn]; int tree2[maxn]; int lowbit(int x) { return x&
「模板」 线段树--区间乘 && 区间加 && 区间求和 原来的代码太恶心了,重贴一遍. #include <cstdio> int n,m; long long p; class SegmentTree { private: struct Node { int l,r; long long v,mul,add; Node *c[2]; Node(int l,int r):l(l),r(r),mul(1LL),add(0LL) { c[0]=c[1]=nullp
开始以为是水题,结果...... 给你一些只有两种颜色的石头,0为白色,1为黑色. 然后两个操作: 1 l r 将[ l , r ]内的颜色取反 0 l r 计算[ l , r ]内最长连续黑色石头的个数 明显的线段树区间合并,记录lmax(从左端点开始的最长值) rmax(从右端点开始的最长值) 用于更新mmax(区间最长值) 但是这儿有区间更新,所以记录0的三个最长值和1的三个最长值,更新父节点的时候交换0与1就好. 还有这儿注意查询时,可能值在查询的几个子区间的的相邻处(因为我们只能查
Description You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operation is to add some given number to each number in a given interval. The other is to ask for the sum of numbers in a given interval. In
Distance on the tree DSM(Data Structure Master) once learned about tree when he was preparing for NOIP(National Olympiad in Informatics in Provinces) in Senior High School. So when in Data Structure Class in College, he is always absent-minded about
题目描述 给定一个长度为 N 序列,编号从 1 到 N .要求支持下面几种操作:1.给一个区间[L,R] 加上一个数x 2.把一个区间[L,R] 里小于x 的数变成x 3.把一个区间[L,R] 里大于x 的数变成x 4.求区间[L,R] 的和5.求区间[L,R] 的最大值6.求区间[L,R] 的最小值 输入 第一行一个整数 N 表示序列长度. 第二行 N 个整数 Ai 表示初始序列. 第三行一个整数 M 表示操作个数. 接下来 M 行,每行三或四个整数,第一个整数 Tp 表示操作类型,接下来 L
Description The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at all places at their whim. The city council has finally decided to build an electoral wall for
Hotel Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 13124 Accepted: 5664 Description 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. Bessie
任意门:http://poj.org/problem?id=2528 Mayor's posters Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 77814 Accepted: 22404 Description The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign hav