n = int(eval(input()))

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

dp = [0]*n

dp[0] = 0

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

for i in range(2,n):

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

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

-n = int(eval(input())) +N = int(eval(input())) -dp = [0] * n -dp[0] = 0 +dp = [0] * N -for i in range(2, n): -    dp[i] = min(dp[i - 2] + abs(H[i] - H[i - 2]), dp[i - 1] + abs(H[i] - H[i - 1])) +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]))