10
-405 -230 252 -393 -390 -259 97 163 81 -129
 3
10000 -10000 10000
 1
-10000
 20
-16 -23 29 44 -40 -50 -41 34 -38 30 -12 28 -44 -49 15 50 -28 38 -2 0

702.333333333333712
 10000.000000000016371
 0.000000000000000
 113.875000000000043

n = int(input())
li = list(map(int, input().split()))
sm = sum(li)
s = (sm / n)
li = list(map(lambda x: x - s, li))
a = []
mx = 0
for i in li:
    for j in range(len(a)):
        mx = max(mx, abs(i + a[j]))
        a[j] += i
    a.append(i)
    mx = max(mx, abs(i))
print(mx)
