import java.util.*;
import java.io.*;
import java.math.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long[] li = new long[n];
        long[] rsw = new long[n+1];
        long ans = 0;
        for(int i = 0; i < n; i++){
            li[i] = sc.nextInt();
        }
        if(n <= 2){
            System.out.println(0);
            return;
        }
        Arrays.sort(li);
        for(int i = 1; i <= n; i++){
            rsw[i] += li[i-1]+rsw[i-1];
        }

        for(int i = 1; i < n-1; i++){
            int left = 1;
            int right = Math.min(i+1,n-i);
            while(Math.abs(right-left) > 1){
                int mid = (left + right) /2;
                if(check(li,i,mid)){
                    left = mid;
                }else{
                    right = mid;
                }
            }
            long val = rsw[i] - rsw[i-left] + rsw[n]-rsw[n-left];
            val -= li[i]*left*2;
            ans = Math.max(ans, val);
        }
        System.out.println(ans);
    }

    static boolean check(long[] li, int i, int mid){
        int n = li.length;
        return (li[n-mid] + li[i-mid])-(2*li[i]) >= 0;
    }
}