#include <iostream>
#include <cstring>
#include <vector>
#include <set>
#include <list>
#include <map>
#include <deque>
#include <algorithm>
#include <utility>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;
#define for1(i,n) for (ll i=0;i<(n);i++)
#define for2(i,m,n) for (ll i=(m);i<(n);i++)
#define for3(i,m,n,d) for (ll i=(m);i<(n);i+=(d))
#define DEBUG 0
template <class T>
void dumplist(T list)
{
    for (auto item : list) {
        cout << item << " ";
    }
    cout << endl;
}

ll Y[100010];
ll N;
const ll inf = 1LL << 60;

// [0,i) [i,N)
ll calc(ll i) {
    if (i == 0) return inf;
    if (i == N) return inf;
    ll cost = 0;
    // 左側を合わせるコスト
    ll pivot = Y[i/2];
    for2(j,0,i) {
        cost += abs(Y[j] - pivot);
    }
    // 右側を合わせるコスト
    pivot = Y[(N-i)/2+i];
    for2(j,i,N) {
        cost += abs(Y[j] - pivot);
    }
    return cost;
}

void solve()
{
    cin >> N;
    for1(i,N) cin >> Y[i];
    sort(&Y[0],&Y[N]);
    if (Y[0] == Y[N-1]) {
        cout << 1 << endl;
        return;
    }

    ll l = 0;
    ll r = N;
    ll p1 = (r-l)*1/3+l;
    ll p2 = (r-l)*2/3+l;
    while (l < r - 10) {
        ll a1 = calc(p1);
        ll a2 = calc(p2);
        if (a1 > a2) {
            l = p1;
        } else {
            r = p2;
        }
        p1 = (r-l)*1/3+l;
        p2 = (r-l)*2/3+l;
        //cerr << l << " " << p1 << " " << p2 << " " << r << endl;
    }

    ll ans = inf;
    for2(i,l,r) {
        ans = min(ans, calc(i));
    }
    cout << ans << endl;
}

int main()
{
    do {
        solve();
    } while (DEBUG);
}