How to realize the quantitative merging of reverse pairs
This article introduces the relevant knowledge of "how to merge the number of reverse pairs". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!
# include#include#include#includeusing namespace std;const int Numb100010 long long LL;int long long LL;int nittint Q [N], t [N]; LL res=0;void merge_sort (int Q [], int lint r) {if (l > = r) return; int m = (lumbr) > > 1; merge_sort (qmeme lcent m); merge_sort (qdhorem m r); / / start merging int iMaglJournal junim 1; int kwon 0; while (I)
