#include<iostream>
#include<string>
#include<iomanip>
#include<cmath>
#include<vector>
#include<algorithm>

using namespace std;

#define int long long
#define rep(i,n) for(int i = 0; i < (n); i++)
#define endl "\n"

const long long INF = (long long)1e18;
const long long MOD = (long long)1e9 + 7; 

string yn(bool f){return f?"Yes":"No";}
string YN(bool f){return f?"YES":"NO";}

#define MAX

signed main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	cout<<fixed<<setprecision(10);
	
	int N;
	vector<int> Y;
	int mi1, mi2;
	int ans = INF;
	int sum1 = 0, sum2 = 0;
	int a = 0;
	cin>>N;
	
	Y.resize(N);
	
	for(int i = 0; i < N; i++){
		cin>>Y[i];
		if(Y[i] != Y[0]) a = 1;
	}
	
	if(!a){
		cout<<1<<endl;
		return 0;
	}
	
	sort(Y.begin(), Y.end());
	
	mi1 = Y[0];
	mi2 = Y[(N-1+1)/2];
	
	for(int i = 1; i < N; i++){
		sum2 += abs(Y[i]-mi2);
	}
	
	for(int i = 1; i < N; i++){
		// cout<<"------------"<<endl;
		ans = min(ans, sum1+sum2);
		
		// cout<<"sum1 "<<sum1<<"  sum2 "<<sum2<<endl;
		// cout<<"i = "<<i<<" mi1 :"<<(0+i-1)/2<<" "<<(N-1+i+1)/2<<endl;
		// cout<<(0+i)/2 <<" "<<(i - (0+i)/2)<<" "<<((N-1+i-1)/2 - i)<<" "<<(N - (N-1+i)/2-1)<<endl;
		// cout<<Y[(0+i)/2] <<" - "<<Y[(0+i-1)/2]<<" <><> "<<Y[(N-1+i+1)/2]<<" - "<<Y[(N-1+i-1)/2]<<endl;
		
		sum1 += (Y[(0+i)/2] - Y[(0+i-1)/2])*(0+i)/2 - (Y[(0+i)/2] - Y[(0+i-1)/2])*(i - (0+i)/2);
		sum1 += abs(Y[(0+i)/2] - Y[i]);
		// cout<<"{}{}{}{ "<<(Y[(N-1+i)/2] - Y[(N-1+i-1)/2])*((N-1+i)/2 - i-1)<<" "<<(Y[(N-1+i)/2] - Y[(N-1+i-1)/2])*(N - (N-1+i)/2-1)<<endl;
		sum2 += (Y[(N-1+i+1)/2] - Y[(N-1+i)/2])*((N-1+i-1)/2 - i) - (Y[(N-1+i+1)/2] - Y[(N-1+i)/2])*(N - (N-1+i)/2-1);
		sum2 -= abs(Y[(N-1+i)/2] - Y[i]);
		
		// cout<<"JKL "<<abs(Y[(N-1+i)/2] - Y[i])<<" "<<Y[(N-1+i)/2]<<" "<<Y[i]<<endl;
		// ans = min(sum1 + sum2, ans);
	}
	
	cout<<ans<<endl;
	
	
	return 0;
}