import sys
from itertools import accumulate
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))


N = I()
A = [0]+LI()
A.sort()
A += [0]
SA = list(accumulate(A))

ans = 0
for i in range(1,N+1):  # 中央値はA_i
    ok,ng = 0,min(i-1,N-i)+1
    while ok+1 < ng:
        mid = (ok+ng)//2
        if A[N+1-mid]+A[i-mid] >= 2*A[i]:
            ok = mid
        else:
            ng = mid
    ans = max(ans,SA[i-1]-SA[i-ok-1]+SA[N]-SA[N-ok]-2*ok*A[i])

for i in range(1,N):  # 中央値は(A_i+A_(i+1))//2
    ok,ng = 0,min(i-1,N-i-1)+1
    while ok+1 < ng:
        mid = (ok+ng)//2
        if A[N+1-mid]+A[i-mid] >= A[i]+A[i+1]:
            ok = mid
        else:
            ng = mid
    ans = max(ans,SA[i-1]-SA[i-ok-1]+SA[N]-SA[N-ok]-ok*(A[i]+A[i+1]))

print(ans)