#include <bits/stdc++.h>
#define all(vec) vec.begin(), vec.end()
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
using vll = vector<ll>;
using vll2 = vector<vector<ll>>;
constexpr ll INF = (1LL << 30) - 1LL;
constexpr ll LINF = (1LL << 60) - 1LL;
constexpr ll MOD = 1e9 + 7;
template <typename T> void chmin(T &a, T b) { a = min(a, b); }
template <typename T> void chmax(T &a, T b) { a = max(a, b); }
int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    cin >> n;
    vll a(n + 1), sum(n + 1);
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    sort(a.begin() + 1, a.end());
    for (int i = 1; i <= n; i++) {
        sum[i] = sum[i - 1] + a[i];
    }
    ll res = 0;
    for (int i = 1; i <= n; i++) {
        ll s;
        if (i % 2) {
            s = sum[n] - sum[n - i / 2] + sum[i / 2] - (i - 1LL) * a[i / 2 + 1];
        } else {
            s = sum[n] - sum[n - i / 2 + 1] + sum[i / 2 - 1] -
                (i - 2LL) * (a[i / 2] + a[i / 2 + 1]) / 2LL;
        }
        chmax(res, s);
    }
    cout << res << endl;
}