n = int(eval(input()))

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

inf = 10000

dp = []

for i in range(100000):

    dp.append(inf)

dp[0] = 0

for i in range(1,n):

    if i>1:

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

    else:

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

print((dp[n-1]))

    
N = int(eval(input()))

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

dp = [100010]*N

dp[0] = 0

for i in range(1,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()))
inf = 10000
dp = []
for i in range(100000):
    dp.append(inf)
dp[0] = 0
for i in range(1, n):
    if i > 1:
        dp[i] = min(dp[i - 1] + abs(h[i] - h[i - 1]), dp[i - 2] + abs(h[i] - h[i - 2]))
    else:
        dp[i] = dp[i - 1] + abs(h[i] - h[i - 1])
print((dp[n - 1]))

N = int(eval(input()))
h = list(map(int, input().split()))
dp = [100010] * N
dp[0] = 0
for i in range(1, 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())) +N = int(eval(input())) -inf = 10000 -dp = [] -for i in range(100000): -    dp.append(inf) +dp = [100010] * N -for i in range(1, n): -    if i > 1: -        dp[i] = min(dp[i - 1] + abs(h[i] - h[i - 1]), dp[i - 2] + abs(h[i] - h[i - 2])) -    else: -        dp[i] = dp[i - 1] + abs(h[i] - h[i - 1]) -print((dp[n - 1])) +for i in range(1, 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]))