#include #include using std::cin; using std::cout; const char endl = '\n'; const int N = 3e5 + 5; int n, a[N], c1[N], c2[N], ans[N]; int lowbit(int x) { return x & -x; } void add(int* c, int x, int y) { for (; x <= n; x += lowbit(x)) c[x] += y; } int sum(int* c, int x) { int res = 0; for (; x; x -= lowbit(x)) res += c[x]; return res; } int main() { std::ios::sync_with_stdio(false); cin.tie(nullptr); cin >> n; for (int i = 1; i <= n; i++) { cin >> a[i]; } for (int i = 1; i <= n; i++) { ans[i] = sum(c1, n) - sum(c1, a[i]); add(c1, a[i], 1); } for (int i = n; i; i--) { ans[i] = std::min(ans[i], sum(c2, n) - sum(c2, a[i])); add(c2, a[i], 1); } cout << std::accumulate(ans + 1, ans + 1 + n, 0ll) << endl; return 0; }