#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <time.h>
#include <stack>
#define popcount __builtin_popcount
using namespace std;
typedef long long int ll;
typedef pair<int, int> P;
int sz;
vector<ll> seg[1<<15];

int query(int a, int b, ll x){
	a+=sz, b+=sz;
	int ret=0;
	for(;a<b; a>>=1, b>>=1){
	    if(b&1){
            b--;
            int k=upper_bound(seg[b].begin(), seg[b].end(), x)-seg[b].begin();
            ret+=k;
        }
		if(a&1){
            int k=upper_bound(seg[a].begin(), seg[a].end(), x)-seg[a].begin();
            a++;
            ret+=k;
        }
	}
	return ret;
}
ll a[10010];
ll med(int p, int q){
    int len=q-p;
    if(len==1) return a[p];
    else if(len==2) return min(a[p], a[p+1]);
    ll l=-1e9-7, r=1e9+7;
    while(r-l>1){
        ll mid=(l+r)/2;
        if(query(p, q, mid)>=(len+1)/2) r=mid;
        else l=mid;
    }
    return r;
}
int main()
{
	int n;
    cin>>n;
    for(int i=0; i<n; i++) cin>>a[i];
    sz=1;
	while(sz<n) sz<<=1;
    for(int i=0; i<n; i++) seg[i+sz].push_back(a[i]);
    for(int i=sz-1; i>=1; i--){
        for(auto x:seg[2*i]) seg[i].push_back(x);
        for(auto x:seg[2*i+1]) seg[i].push_back(x);
        sort(seg[i].begin(), seg[i].end());
    }
    ll ans=0;
    for(int k=1; k<=n; k++){
        vector<ll> sl(n/k+1), sr(n/k+1);
        for(int j=0; j<n/k; j++){
            sl[j+1]=sl[j]+med(j*k, (j+1)*k);
        }
        for(int j=0; j<n/k; j++){
            sr[j+1]=sr[j]+med(n-(j+1)*k, n-j*k);
        }
        ll mx=0;
        ans=max(ans, sr[n/k]*k);
        for(int j=1; j<=n/k; j++){
            mx=max(mx, sl[j]);
            ans=max(ans, (mx+sr[n/k-j])*k);        
        }
    }
    cout<<ans<<endl;
    return 0;
}