#yuki837
n=int(input())
y=list(map(int,input().split()))
y.sort()
if y[0]==y[-1]:
 print(1)
 exit()
d=[0]*100000
temp=0
for i in range(n-1):
 temp+=y[i]-y[i//2]
 d[i]+=temp
temp=0
for i in range(n-2,-1,-1):
 temp+=y[n-(n-i)//2]-y[i+1]
 d[i]+=temp
m=1<<18
for i in range(n-1):
 m=min(m,d[i])
print(m)