N = int(eval(input()))

*h, = list(map(int, input().split()))

dp = [float("inf") for _ in range(N)]

dp[0] = 0

for i in range(N - 1):

	dp[i + 1] = min(dp[i + 1], dp[i] + abs(h[i + 1] - h[i]))

	if i < N - 2:

		dp[i + 2] = min(dp[i + 2], dp[i] + abs(h[i + 2] - h[i]))

print((dp[N - 1]))
n = int(eval(input()))

h=list(map(int,input().split()))

dp=[0]*(n)

dp[1]=abs(h[1]-h[0])

for i in range(2,n):

  dp[i]=min(dp[i-1]+abs(h[i]-h[i-1]),dp[i-2]+abs(h[i]-h[i-2]))

print((dp[n-1]))

N = int(eval(input()))
(*h,) = list(map(int, input().split()))
dp = [float("inf") for _ in range(N)]
dp[0] = 0
for i in range(N - 1):
    dp[i + 1] = min(dp[i + 1], dp[i] + abs(h[i + 1] - h[i]))
    if i < N - 2:
        dp[i + 2] = min(dp[i + 2], dp[i] + abs(h[i + 2] - h[i]))
print((dp[N - 1]))

n = int(eval(input()))
h = list(map(int, input().split()))
dp = [0] * (n)
dp[1] = abs(h[1] - h[0])
for i in range(2, n):
    dp[i] = min(dp[i - 1] + abs(h[i] - h[i - 1]), dp[i - 2] + abs(h[i] - h[i - 2]))
print((dp[n - 1]))

-N = int(eval(input())) -(*h,) = list(map(int, input().split())) -dp = [float("inf") for _ in range(N)] -dp[0] = 0 -for i in range(N - 1): -    dp[i + 1] = min(dp[i + 1], dp[i] + abs(h[i + 1] - h[i])) -    if i < N - 2: -        dp[i + 2] = min(dp[i + 2], dp[i] + abs(h[i + 2] - h[i])) -print((dp[N - 1])) +n = int(eval(input())) +h = list(map(int, input().split())) +dp = [0] * (n) +dp[1] = abs(h[1] - h[0]) +for i in range(2, n): +    dp[i] = min(dp[i - 1] + abs(h[i] - h[i - 1]), dp[i - 2] + abs(h[i] - h[i - 2])) +print((dp[n - 1]))