n = int(eval(input()))

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

dp = [0] * n

dp[0] = 0

for i in range(1, n):

    if i == 1:

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

    else:

        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 = [0] * n

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

for i in range(2, n):

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

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

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