// #pragma GCC optimize ("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC target ("avx,avx2,fma")
#include <bits/stdc++.h>

using std::cin, std::cout, std::cerr;
using ll = long long;

int main() {
    std::ios::sync_with_stdio(false);
    int n; cin >> n;
    std::vector<int> a(n);
    for(int i = 0; i < n; i ++)
        cin >> a[i];
    std::sort(a.begin(), a.end());
    auto f = [](auto a) {
        ll r = 0;
        for(int i = 0; i + 1 < a.size(); i ++) {
            ll x = a[i], y = a[i + 1];
            if(x < 0 && y < 0)
                r += -x - y;
            else
                r += std::abs(x - y);
        }
        return r;
    };
    ll ans = f(a);
    std::rotate(a.begin() + 1, a.begin() + 2, a.end());
    ans = std::min(ans, f(a));
    cout << ans << '\n';
}