//new.cpp
/*
Author : Hocky Yudhiono
Sab 27 Okt 2018 07:10:15  WIB
Current Local Time : 19:10:15

getchar_unlocked > getchar > cin without sync > scanf > cin with sync
bool operator<(const MyStruct& rhs) const
*/

#include <algorithm>
#include <iostream>
#include <stdlib.h>
#include <cassert>
#include <cstring>
#include <iomanip>
#include <limits>
#include <string>
#include <vector>
#include <cmath>
#include <deque>
#include <queue>
#include <stack>
#include <map>
#include <set>

using namespace std;

#if 0
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC optimize(3)
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC target("sse3","sse2","sse")
#pragma GCC target("avx","sse4","sse4.1","sse4.2","ssse3")
#pragma GCC target("f16c")
#pragma GCC optimize("inline","fast-math","unroll-loops","no-stack-protector")
#pragma GCC diagnostic error "-fwhole-program"
#pragma GCC diagnostic error "-fcse-skip-blocks"
#pragma GCC diagnostic error "-funsafe-loop-optimizations"
#pragma GCC diagnostic error "-std=c++14"
#pragma GCC target ("string"...)
#pragma GCC push_options
#pragma GCC pop_options
#pragma GCC reset_options
#pragma GCC optimize ("O3")
#endif

typedef long long LL;
typedef unsigned long long ULL;
typedef long double LD;
//If the time limit is strict, try not to use long double

#define mp make_pair
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define remove erase
//Remember to undefine if the problem is interactive
#define endl '\n'
#define DEBUG(X) cout << ">>> DEBUG(" << __LINE__ << ") " << #X << " = " << (X) << endl

const double eps = 1e-9;
const int INFMEM = 63;
const int INF = 1061109567;
const LL LINF = 4557430888798830399LL;
const double DINF = numeric_limits<double>::infinity();
const LL MOD = 1000000007;
const int dx[8] = {1,0,-1,0,1,1,-1,-1};
const int dy[8] = {0,1,0,-1,1,-1,1,-1};
const double PI = 3.141592653589793;

#ifdef _WIN32
#define getchar_unlocked getchar
#endif
#define GETCHAR getchar_unlocked
inline void fastll(LL &input_number) 
{
    input_number = 0;
    int ch = GETCHAR();
    int sign = 1;
    while(ch < '0' || ch > '9'){
        if(ch == '-') sign=-1;
        ch = GETCHAR();
    }
    while(ch >= '0' && ch <= '9'){
        input_number = (input_number << 3)+(input_number << 1) + ch-'0';
        ch = GETCHAR();
    }
    input_number *= sign;
}

inline void open(string a){
    freopen((a+".in").c_str(),"r",stdin);
    freopen((a+".out").c_str(),"w",stdout);
}

inline void fasterios(){
    //Do not use if interactive
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}

LL isi[100005];
bool done[100005];
LL n,kiri,kanan,ansa,ansb;

int main(){
	fasterios();
    cin >> n;
    for(int i = 1;i <= n;i++) cin >> isi[i];
    sort(isi+1,isi+1+n);
	LL pre;
	kiri = 1;
	kanan = n;
	pre = isi[(n+1)/2];
	for(int i = 1;i < n;i++){
		if(i&1){
			ansa += abs(pre-isi[kiri]);
			pre = isi[kiri++];
		}
		else{
			ansa += abs(pre-isi[kanan]);
			pre = isi[kanan--];
		}
	}
	kiri = 1;
	kanan = n;
	pre = isi[(n+1)/2];
	for(int i = 1;i < n;i++){
		if(i&1){
			ansb += abs(pre-isi[kanan]);
			pre = isi[kanan--];
		}
		else{
			ansb += abs(pre-isi[kiri]);
			pre = isi[kiri++];
		}
	}
	cout << max(ansa,ansb) << endl;
    return 0;
}

Measured memory_bytes: 1024