# こういう問題は中央値を考える

import sys
input = sys.stdin.readline
from itertools import accumulate

N=int(input())
Y=sorted(map(int,input().split()))

if max(Y)==min(Y):
    print(1)
    exit()

ANS=1<<100

S=list(accumulate(Y))
S.append(0)

for i in range(N-1):
    score=0

    x=i//2
    score+=Y[x]*(x+1)-S[x]
    score+=S[i]-S[x]-Y[x]*(i-x)

    x=(i+1+N-1)//2
    score+=Y[x]*(x-i)-S[x]+S[i]
    score+=S[N-1]-S[x]-Y[x]*(N-1-x)

    ANS=min(ANS,score)

print(ANS)