ارسال شماره 8
x = int(input())
L = list(map(int, input().split()))
ans = 0
for i in range(x // 2):
ans += abs(L[i] - L[x - 1 - i])
print(ans)
x = int(input())
L = list(map(int, input().split()))
ans = 0
for i in range(x // 2):
ans += abs(L[i] - L[x - 1 - i])
print(ans)