import sys
from functools import lru_cache

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

if N < 3:
    print(0)
    sys.exit()
A.sort()

B = [0] * (N + 1)
for i in range(N):
    B[i + 1] = B[i] + A[i]

@lru_cache(maxsize=None)
def g(x, y):
    return B[N] - B[N - y] + B[x] - B[x - y] - (2 * y) * A[x]

#@lru_cache(maxsize=None)
def f(x):
    lb = 1
    ub = min(x, N - x - 1)
    t1 = (ub + 2 * lb) // 3
    t2 = (2 * ub + lb) // 3

    while ub - lb > 3:  # ???
        b, c = g(x, t1), g(x, t2)
        if b < c:
            lb = t1
        else:
            ub = t2
        t1 = (ub + 2 * lb) // 3
        t2 = (2 * ub + lb) // 3
    return (max(g(x, lb), g(x, t1), g(x, t2), g(x, ub)))

ans = 0
for i in range(1,N-1):
    ans = max(ans,f(i))
print(ans)