def main():
    import sys
    input = sys.stdin.readline

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

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

    ans = 0
    for i in range(N):
        ok = 0
        ng = i+1
        mid = (ok+ng)//2
        while ng - ok > 1:
            if A[i-mid] + A[N-mid] > 2 * A[i]:
                ok = mid
            else:
                ng = mid
            mid = (ok+ng)//2
        ans_new = cs_A[N] - cs_A[N-ok] + cs_A[i] - cs_A[i-ok] - A[i] * (2*ok)
        if ans_new > ans:
            ans = ans_new
    print(ans)


if __name__ == '__main__':
    main()