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

import sys
num=sys.stdin.readline().strip()
num=int(num)
nums=sys.stdin.readline().strip().split()
numsordered=sorted(nums)
if num%2==0:
    median=sum([int(k) for k in numsordered[(num/2):num/2+2]])/2.0
else:
    median=int(numsordered[(num+1)/2-1])
l=[int(n)-median for n in nums]
maxsumnegative=0
maxsumpostive=0
sumNeg=0
sumPos=0
for n in l:
    if n<0:
        sumNeg+=(n*(-1))
        maxsumnegative=max(maxsumnegative,sumNeg)
        sumPos=0
    if n>0:
        sumPos+=n
        maxsumpostive=max(maxsumpostive,sumPos)
        sumNeg=0
print max(maxsumnegative,maxsumpostive)
    
