Ultra-QuickSort Time Limit: 7000MS Memory Limit: 65536K Total Submissions: 52306 Accepted: 19194 Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swappin…
Sort it Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4110 Accepted Submission(s): 2920 Problem Description You want to processe a sequence of n distinct integers by swapping two adjacent s…
题意:在二维坐标轴上给你一些点,求出所有由三个点构成的v和∧图案的个数. 题解:因为给出的点是按横坐标的顺序给出的,所以我们可以先遍历然后求出某个点左边比它高和低的点的个数(这个过程简直和用树状数组求逆序对的操作一模一样好不好!),用\(grt[i]\)记录第\(i\)个点左边比它大的数,\(low[i]\)表示比它小的数,然后我们再对树状数组清空,反着求一下每个点右边的情况,这次不用再记录了,直接求贡献给答案即可. 代码: #define int long long int n; int a[…
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…
Swaps and Inversions Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description Long long ago, there was an integer sequence a. Tonyfang think this sequence is messy, so he will count the number of inversions…
Crossings Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100463 Description Given a permutation P of {0, 1, ..., n − 1}, we define the crossing number of it as follows. Write the sequence 0, 1, 2, . . . , n − 1 from left to ri…
Grandpa Giuseppe won a professional pizza cutter, the kind of type reel and, to celebrate, baked a rectangle pizza to his grandchildren! He always sliced his pizzas into pieces by making cuts over continuous lines, not necessarily rectilinear, of two…
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…