#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;

//template
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(a);i>(b);i--)
#define ALL(v) (v).begin(),(v).end()
typedef long long int ll;
const int inf = 0x3fffffff; const ll INF = 0x1fffffffffffffff; const double eps=1e-12;
void tostr(ll x,string& res){while(x)res+=('0'+(x%10)),x/=10; reverse(ALL(res)); return;}
template<class T> inline bool chmax(T& a,T b){ if(a<b){a=b;return 1;}return 0; }
template<class T> inline bool chmin(T& a,T b){ if(a>b){a=b;return 1;}return 0; }
//template end



int main(){
   int n; scanf("%d",&n);
   vector<ll> a(n);
   rep(i,0,n)scanf("%lld",&a[i]);
   sort(ALL(a));
   vector<ll> b(n+1,0);
   rep(i,0,n)b[i+1]=b[i]+a[i];
   ll res=0;
   rep(i,0,n){
      int lb=0,rb=i+1;
      while(rb-lb>1){
         int mid=(lb+rb)/2;
         if(a[i]-a[i-mid]<a[n-mid]-a[i])lb=mid;
         else rb=mid;
      }
      chmax(res,b[i]-b[i-lb]+b[n]-b[n-lb]-a[i]*lb*2);
   }
   printf("%lld\n",res);
   return 0;
}