/* HDU 6098 - Inversion [ 贪心,数论 ] | 2017 Multi-University Training Contest 6 题意: 求出所有B[i] = max(A[j]) [j % i != 0] 分析: 排个序从大到小找第一个不是它倍数的数. 至多扫倍数的个数,均摊复杂度O(nlogn) */ #include <bits/stdc++.h> using namespace std; struct Node { int x, i; }; bool cmp(No…

Inversion 思路:从大到小排序后,每次找到第一个下标不整出i的输出. 代码: #include<bits/stdc++.h> using namespace std; #define mem(a,b) memset((a),(b),sizeof(b)) ; struct node { int a; int id; bool operator < (const node &t) const { return a>t.a; } }a[N]; int main() { i…

题目链接 Problem Description Give an array A, the index starts from 1. Now we want to know Bi=maxi∤jAj , i≥2. Input The first line of the input gives the number of test cases T; T test cases follow. Each case begins with one line with one integer n : the…

Problem Description Give an array A, the index starts from 1.Now we want to know Bi=maxi∤jAj , i≥2.   Input The first line of the input gives the number of test cases T; T test cases follow.Each case begins with one line with one integer n : the size…

Give an array A, the index starts from 1. Now we want to know B i =max i∤j A j  Bi=maxi∤jAj , i≥2 i≥2 . InputThe first line of the input gives the number of test cases T; T test cases follow. Each case begins with one line with one integer n : the si…

Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18543    Accepted Submission(s): 11246 Problem Description The inversion number of a given number sequence a1, a2, ..., a…

http://acm.hdu.edu.cn/showproblem.php?pid=4911   归并排序求逆对数. Inversion Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 556    Accepted Submission(s): 239 Problem Description bobo has a sequence…

Inversion Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5497 Description 你有一个序列\{a_1,a_2,...,a_n\}{a​1​​,a​2​​,...,a​n​​},然后你可以删除一个长度为mm的连续子序列. 问如何删除才能使逆序对最少. Input 输入有多组数据, 第一行有一个整数TT表示测试数据的组数. 对于每组数据: 第一行包含2个…

主题链接:http://acm.hdu.edu.cn/showproblem.php?pid=4911 Inversion Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 528    Accepted Submission(s): 228 Problem Description bobo has a sequence a1,a2,…

Inversion 题目链接: http://acm.hust.edu.cn/vjudge/contest/121349#problem/A Description bobo has a sequence a 1,a 2,-,a n. He is allowed to swap two adjacent numbers for no more than k times. Find the minimum number of inversions after his swaps. Note: Th…