#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
typedef pair<int,P> P1;
typedef pair<P,P> P2;
#define pu push
#define pb push_back
#define mp make_pair
#define eps 1e-7
#define INF 1000000000
#define mod 1000000007
#define fi first
#define sc second
#define rep(i,x) for(int i=0;i<x;i++)
#define repn(i,x) for(int i=1;i<=x;i++)
#define SORT(x) sort(x.begin(),x.end())
#define ERASE(x) x.erase(unique(x.begin(),x.end()),x.end())
#define POSL(x,v) (lower_bound(x.begin(),x.end(),v)-x.begin())
#define POSU(x,v) (upper_bound(x.begin(),x.end(),v)-x.begin())
int n;
ll a[200005],rui[200005];
ll ans;
int main(){
	scanf("%d",&n);
	repn(i,n) scanf("%lld",&a[i]);
	sort(a+1,a+n+1);
	repn(i,n) rui[i] = rui[i-1]+a[i];
	for(int i=1;i<=n;i++){
		int cnt = min(i-1,n-i);
		int lb = 0,ub = cnt+1;
		while(ub-lb > 1){
			int mid = (lb+ub)/2;
			if(a[i-mid]+a[n+1-mid] >= 2LL*a[i]) lb = mid;
			else ub = mid;
		}
		ans = max(ans,rui[n]-rui[n-lb]+a[i]+rui[i-1]-rui[i-1-lb]-1LL*(lb+lb+1)*a[i]);
	}
	cout<<ans<<endl;
}