24 Puzzle Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65768/65768 K (Java/Others) Total Submission(s): 1306 Accepted Submission(s): 381 Problem Description Daniel likes to play a special board game, called 24 puzzle. 24 puzzle is such
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
一.Ultra-QuickSort(树状数组求逆序数) 题目链接(点击) Ultra-QuickSort Time Limit: 7000MS Memory Limit: 65536K Total Submissions: 73943 Accepted: 27692 Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a seque
关于拼图和逆序数的关系可以看看这个 http://www.guokr.com/question/579400/ 然后求逆序数在判断就行了 按题意生成原始排列,观察发现,每一轮数后方比该数小的数的数量(即对逆序对数的贡献)呈等差数列形式,公差p-1,项数为(num-1)/p+1,(首项为0)照此简化计算,不需要正真求出排列. #include <bits/stdc++.h> using namespace std; int main() { int t,n,m,p; scanf("%d
Life is a Line Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 1927 Accepted Submission(s): 471 Problem Description There is a saying: Life is like a line, some people are your parallel line