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…
Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the sequence is sorted in ascending order. For the input seque…
Ultra-QuickSort Time Limit: 7000MS Memory Limit: 65536K Total Submissions: 50517 Accepted: 18534 Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swappin…
HDU 5862 Counting Intersections(离散化+树状数组) 题目链接http://acm.split.hdu.edu.cn/showproblem.php?pid=5862 Description Given some segments which are paralleled to the coordinate axis. You need to count the number of their intersection. The input data guarant…
Ultra-QuickSort Time Limit: 7000MS Memory Limit: 65536K Total Submissions: 38258 Accepted: 13784 Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swappin…
Nested Segments time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given n segments on a line. There are no ends of some segments that coincide. For each segment find the number of s…
Disharmony Trees Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 663 Accepted Submission(s): 307 Problem Description One day Sophia finds a very big square. There are n trees in the square. T…
