N = int(eval(input()))

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

    

dp = [0]*N

for i in range(1,N):

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

  if(i > 1):

    dp[i] = min(dp[i], 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[0]-H[1])

for i in range(2,N):

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

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

-for i in range(1, N): -    dp[i] = max(dp[i], dp[i - 1] + abs(H[i] - H[i - 1])) -    if i > 1: -        dp[i] = min(dp[i], dp[i - 2] + abs(H[i] - H[i - 2])) +dp[1] = abs(H[0] - H[1]) +for i in range(2, N): +    dp[i] = min(abs(H[i] - H[i - 1]) + dp[i - 1], abs(H[i] - H[i - 2]) + dp[i - 2])