def f(x, y):
    return -x - y if x < 0 and y < 0 else abs(x - y)
n = int(input())
a = sorted(map(int, input().split()))
ans = sum(map(f, a, a[1:]))
a = a[1:] + [a[0]]
ans = min(ans, sum(map(f, a, a[1:])))
print(ans)