import java.util.*;
import java.io.*;

public class Main {
	public static void main (String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(br.readLine());
		String[] line = br.readLine().split(" ", n);
		int[] positions = new int[n];
		for (int i = 0; i < n; i++) {
		    positions[i] = Integer.parseInt(line[i]);
		}
		Arrays.sort(positions);
		if (positions[0] == positions[n - 1]) {
		    System.out.println(1);
		    return;
		}
		long[] sums = new long[n];
		sums[0] = positions[0];
		for (int i = 1; i < n; i++) {
		    sums[i] = sums[i - 1] + positions[i];
		}
		long min = Long.MAX_VALUE;
		for (int i = 1; i < n; i++) {
		    int leftc = (i - 1) / 2;
		    long tmp = positions[leftc] * (long)(leftc + 1) - sums[leftc];
		    tmp += sums[i - 1] - sums[leftc] - positions[leftc] * (long)(i - leftc - 1);
		    int rightc = (n - 1 + i) / 2;
		    tmp += positions[rightc] *(long)(rightc - i + 1) - (sums[rightc] - sums[i - 1]);
		    tmp += sums[n - 1] - sums[rightc] - positions[rightc] * (long)(n - 1 - rightc);
		    min = Math.min(min, tmp);
		}
		System.out.println(min);
   }
   
}