#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll, pair<int, int>>;
const int N = 2e3 + 7;
ll a[N];
int vf[N], vt[N];
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  int tt = clock();
  int n;
  cin >> n;
  for (int i = 1; i <= n; ++i) cin >> a[i];
  ll ans = 0LL;
  vector<pll> b;
  for (int i = 1; i <= n; ++i) {
    for (int j = 1; j <= n; ++j) {
      b.emplace_back(a[i] * abs(i - j), make_pair(i, j));
    }
  }
  sort(b.begin(), b.end(),
       [](const pll& lhs, const pll& rhs) { return lhs.first > rhs.first; });
  for (auto& v : b) {
    if (vf[v.second.first] || vt[v.second.second]) continue;
    ans += v.first;
    vf[v.second.first]++;
    vt[v.second.second]++;
  }
  cout << ans << '\n';
  cerr << "TIME = " << (double)1.0 * (clock() - tt) / CLOCKS_PER_SEC
       << " seconds" << endl;
  return 0;
}
