from bisect import bisect_left, bisect, insort_left, insort
from itertools import accumulate
n = int(input())
y = sorted(map(int, input().split()))
sum_y = tuple(accumulate(y))
m = {}
def f(a):
    if a not in m:
        l = bisect_left(y, a)
        m[a] = abs(sum_y[l - 1] - a * l) + abs((sum_y[-1] - sum_y[l - 1]) - a * (n - l))
    return m[a]
l = y[0]
r = y[-1]
while r - l > 2:
    mid_l = (l * 2 + r) // 3
    mid_r = (l + r * 2) // 3
    if f(mid_l) > f(mid_r):
        l = mid_l
    else:
        r = mid_r
print(min(f(l), f(l + 1), f(l + 2)))