#include <bits/stdc++.h>
#include <string>
#define ft first
#define sc second
#define pt(sth) cout << sth << "\n"
#define chmax(a, b) (a)=max(a, b)
#define chmin(a, b) (a)=min(a, b)
#define moC(a, s, b) (a)=((a)s(b)+MOD)%MOD
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
static const ll INF=1e18;
static const ll MAX=101010;
static const ll MOD=1e9+7;


/*
 for(i=0; i<N; i++)
   cin >> a[i];
*/



int main(void) {
  ll i, j, k;
  
  ll N;
  cin >> N;
  ll a[MAX*2];
  ll s[MAX*2]={};
  
  for(i=1; i<=N; i++) cin >> a[i];
  sort(a+1, a+N+1);
  for(i=1; i<=N; i++) s[i]=s[i-1]+a[i];
  
  ll ans=0;
  for(i=1; i<=N; i++) {
    
    ll l=1, r=min(i-1, N-i)+1;
    while(l+1<r) {
      ll m=(l+r)/2;
      ll t=a[N-m+1]+a[i-1-m+1]-a[i]*2;
      (t>0 ? l:r)=m;
    }
    
    //pt(i<<" "<<l);
    chmax(ans, (s[N]-s[N-l])+(s[i-1]-s[i-1-l])-a[i]*2*l);
  }
  
  pt(ans);
  
}