#include <bits/stdc++.h>
//#include <atcoder/all>
using namespace std;
//using namespace atcoder;
//using mint = modint1000000007;
//const int mod = 1000000007;
//using mint = modint998244353;
//const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n-1); i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r-1);i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define endl "\n"
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }


#define output(v,add)rep(_,v.size())cout << v[_] + add <<" ";cout<< endl;
#define debug(v) output(v,0)
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n; cin >> n;
	vector<int>a(n);
	rep(i, n)cin >> a[i];
	long long ans = 0;
	rep2(i, 1, n + 1) {
		vector<int>l, r;
		rep(_, 2) {
			for (int j = 0; j < n;) {
				vector<int>v = { a[j] };
				int k = j + 1;
				while (k < n && v.size() != i) {
					v.push_back(a[k]);
					k++;
				}
				j = k;
				if (v.size() != i)break;
				sort(all(v));
				l.push_back(v[(v.size() - 1) / 2]);
			}
			swap(l, r);
			reverse(all(a));
		}
		vector<long long>sl(l.size() + 1), sr(r.size() + 1);
		rep(j, l.size())sl[j + 1] = sl[j] + l[j];
		rep(j, l.size())chmax(sl[j + 1], sl[j]);
		rep(j, r.size())sr[j + 1] = sr[j] + r[j];
		rep(j, r.size())chmax(sr[j + 1], sr[j]);
		int mx = n / i;
		rep(j, mx + 1) {
			long long sub = 0;
			sub += sl[j] - sl[0];
			int k = mx - j;
			sub += sr[k] - sr[0];
			chmax(ans, sub * i);
		}
	}
	cout << ans << endl;
	return 0;
}