#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main(){
  int n;cin>>n;
  if(n < 3){
    cout << 0 << endl;
    return 0;
  }
  vector<long long> a(n);
  for(int i = 0; n > i; i++){
    cin>>a[i];
  }
  long long ans = 0;
  sort(a.begin(),a.end());
  long long nw = a[0]+a[1];
  long long ce;
  for(int i = 1; i <= n-i; i++){//3,5
    nw += a[n-i];
    ce = a[i];
    ans = max(ans,nw-ce*(i*2+1));
    if(i == n-i)break;
    nw += a[i+1];
    ce = a[i]+a[i+1];
    ans = max(ans,nw-ce*(i+1));
  }
  cout << ans << endl;
}