https://scut.online/p/337 这个东西是个阶梯状的.那么可以考虑存两棵树,一棵树是阶梯的,另一棵树的平的,随便一减就是需要的阶梯. 优化之后貌似速度比树状数组还惊人. #include<bits/stdc++.h> using namespace std; typedef long long ll; inline int read() { int x=0; int f=0; char c; do { c=getchar(); if(c=='-') f=1; } while…
The best programmers of Embezzland compete to develop a part of the project called "e-Government" — the system of automated statistic collecting and press analysis. We know that any of the k citizens can become a member of the Embezzland governm…
Dynamic Rankings Time Limit: 10 Seconds Memory Limit: 32768 KB The Company Dynamic Rankings has developed a new kind of computer that is no longer satisfied with the query like to simply find the k-th smallest number of the given N numbers. They…
题目链接: 传送门 Minimum Inversion Number Time Limit: 1000MS Memory Limit: 32768 K Description The inversion number of a given number sequence a1, a2, ..., an is the number of pairs (ai, aj) that satisfy i < j and ai > aj. For a given sequence of numbe…
题目链接:http://poj.org/problem?id=2299 求逆序数的经典题,求逆序数可用树状数组,归并排序,线段树求解,本文给出树状数组,归并排序,线段树的解法. 归并排序: #include<cstdio> #include<iostream> using namespace std; #define max 500002 int arr[max],b[max];//b[]为临时序列,arr[]为待排序数列,结果在arr[]中 int tp[max]; ;//总逆序…
Problem Description After inventing Turing Tree, 3xian always felt boring when solving problems about intervals, because Turing Tree could easily have the solution. As well, wily 3xian made lots of new problems about intervals. So, today, this sick t…
Necklace Time Limit: 15000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2083 Accepted Submission(s): 747 Problem Description Mery has a beautiful necklace. The necklace is made up of N magic balls. Each ba…
题目网址:http://acm.hdu.edu.cn/showproblem.php?pid=4325 Description As is known to all, the blooming time and duration varies between different kinds of flowers. Now there is a garden planted full of flowers. The gardener wants to know how many flowers w…
随笔目的:方便以后对树状数组(BIT)以及基本线段树的回顾 例题链接:http://acm.hdu.edu.cn/showproblem.php?pid=1166 例题:hdu 1166 敌兵布阵 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Problem Description C国的死对头A国这段时间正在进行军事演习,所以C国间谍头子Derek和他手下Tidy又开始忙乎…
敌兵布阵 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 37773 Accepted Submission(s): 15923 Problem Description C国的死对头A国这段时间正在进行军事演习,所以C国间谍头子Derek和他手下Tidy又开始忙乎了.A国在海岸线沿直线布置了N个工兵营地,Derek和Tidy的任务就…
Attack Time Limit: 5000/3000 MS (Java/Others) Memory Limit: 65768/65768 K (Java/Others) Total Submission(s): 2523 Accepted Submission(s): 805 Problem Description Today is the 10th Annual of “September 11 attacks”, the Al Qaeda is about to attac…
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 17737 Accepted Submission(s): 10763 Problem Description The inversion number of a given number sequence a1, a2, ...,…
Problem 1050: Just Go Time Limits: 3000 MS Memory Limits: 65536 KB 64-bit interger IO format: %lld Java class name: Main Description There is a river, which contains n stones from left to right. These stones are magic, each one has a magic nu…
Stars Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 37323 Accepted: 16278 Description Astronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian coordinates. Let the level of a star b…
3110: [Zjoi2013]K大数查询 Time Limit: 20 Sec Memory Limit: 512 MBSubmit: 1384 Solved: 629[Submit][Status] Description 有N个位置,M个操作.操作有两种,每次操作如果是1 a b c的形式表示在第a个位置到第b个位置,每个位置加入一个数c如果是2 a b c形式,表示询问从第a个位置到第b个位置,第C大的数是多少. Input 第一行N,M接下来M行,每行形如1 a b c或2 a b…
