import sys

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

if N<=2:
    print(0)
    sys.exit()

from itertools import accumulate

S=list(accumulate(A))
S2=list(accumulate(A[::-1]))

ANS=0

for i in range(N//2):
    #print(S[i]+S2[i]-A[i+1]*(2*(i+1)))
    ANS=max(ANS,S[i]+S2[i]-A[i+1]*(2*(i+1)))

print(ANS)