#include #include using namespace std; int a[500000], b[500000], t[500000]; long long r; void merge_sort(int s, int e){ if(e-s == 1) return; int m = s+(e-s)/2; merge_sort(s, m); merge_sort(m, e); int i = s, j = m; for(int k=s; k> n; for(int i=0; i> a[i]; for(int i=0; i