qyliang/CodeNanoFix huggingface dataset:
Buggy code:
N = input()
input = input()
hights = [int(h) for h in input.split()]

print(hights)

eval = []

def chmin(a,b):
    if a > b:
        b = a
        return True
    return False

for i in range(N):
    if i == N:
        break
    elif i == 0:
        eval.append(0)
        continue
    elif i == 1:
        eval.append(abs(hights[i] - hights[i-1] ))
        continue

    to_next = abs(hights[i] - hights[i-1]) + eval[i-1]
    prev_to_next = abs(hights[i] - hights[i-2]) + eval[i-2]
    if prev_to_next > to_next:
        eval.append(to_next)
    else:
        eval.append(prev_to_next)
print(eval)
print(eval[N-1])

Fixed code:
N = int(input())

hights = [int(h) for h in input().split()]


eval = []

def chmin(a,b):
    if a > b:
        b = a
        return True
    return False

for i in range(N):
    if i == N:
        break
    elif i == 0:
        eval.append(0)
        continue
    elif i == 1:
        eval.append(abs(hights[i] - hights[i-1] ))
        continue

    to_next = abs(hights[i] - hights[i-1]) + eval[i-1]
    prev_to_next = abs(hights[i] - hights[i-2]) + eval[i-2]
    if prev_to_next > to_next:
        eval.append(to_next)
    else:
        eval.append(prev_to_next)
print(eval[N-1])
Buggy code:
n = int(input())
h = list(map(int, input().split()))
dp = [0]
dp.append(abs(h[1]-h[0]))
print(dp)
if n > 2:
    for i in range(2,n):
        dp.append(min(abs(h[i]-h[i-2])+dp[i-2],abs(h[i]-h[i-1])+dp[i-1]))
print(dp[-1])

Fixed code:
n = int(input())
h = list(map(int, input().split()))
dp = [0]
dp.append(abs(h[1]-h[0]))
if n > 2:
    for i in range(2,n):
        dp.append(min(abs(h[i]-h[i-2])+dp[i-2],abs(h[i]-h[i-1])+dp[i-1]))
print(dp[-1])
Buggy code:
n = int(input())
v = [int(x) for x in input().split()]

dp = [float("inf") for i in range(n+1)]
dp[0] = 0
dp[1] = abs(v[1]-v[0])
for i in range(n-1):
    dp[i+2] = min(dp[i+1]+abs(v[i+1]-v[i+2]),dp[i]+abs(v[i]-v[i+2]))

print(dp[n-1])


Fixed code:
n = int(input())
v = [int(x) for x in input().split()]

dp = [float("inf") for i in range(n+10)]
dp[0] = 0
dp[1] = abs(v[1]-v[0])
for i in range(n-2):
    dp[i+2] = min(dp[i+1]+abs(v[i+1]-v[i+2]),dp[i]+abs(v[i]-v[i+2]))

print(dp[n-1])
Buggy code:
def chmin(a, b):
  if a > b:
    return b
  else:
    return a

def main():
  dp = [1e4+10]*100010
  hs = [0]*100010
  N = int(input())
  hs[:N] = map(int, input().split())
  
  dp[0] = 0
  for i in range(N):
    dp[i+1] = chmin(dp[i+1], dp[i]+abs(hs[i+1]-hs[i]))
    dp[i+2] = chmin(dp[i+2], dp[i]+abs(hs[i+2]-hs[i]))
  print(dp[:N], dp[N-1])

if __name__ == '__main__':
  main()

Fixed code:
def chmin(a, b):
  if a > b:
    return b
  else:
    return a

def main():
  dp = [1e12]*100010
  hs = [0]*100010
  
  N = int(input())
  hs[:N] = map(int, input().split())
  
  dp[0] = 0
  for i in range(N):
    dp[i+1] = chmin(dp[i+1], dp[i]+abs(hs[i+1]-hs[i]))
    dp[i+2] = chmin(dp[i+2], dp[i]+abs(hs[i+2]-hs[i]))
  print(dp[N-1])
  return

if __name__ == '__main__':
  main()
Buggy code:
n = int(input())
A = [int(i) for i in input().split()]
dp = [0] * n

for i in range(1, n):
    dp[i] = dp[i - 1] + abs(A[i] - A[i - 1])
    if n > 1:
        dp[i] = min(dp[i], dp[i - 2] + abs(A[i] - A[i - 2]))
    
print(dp[-1])

Fixed code:
n = int(input())
A = [int(i) for i in input().split()]
dp = [0] * n

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

Fixed code:
N = int(input())
h = list(map(int,input().split()))
H = [0]*N
for i in range(1,N):
    if i == 1:
        H[i] = abs(h[1]-h[0])
    else:
        H[i] = min(H[i-1]+abs(h[i]-h[i-1]),H[i-2]+abs(h[i]-h[i-2]))
print(H[N-1])
Buggy code:
n = int(input())
h = list(map(int,input().split()))
cost = [100000] * n
cost[0] = 0
cost[1] = abs(h[0]-h[1])
for i in range(2,n):
    sgl = cost[i-1] + abs(h[i]-abs[i-1])
    dbl = cost[i-2] + abs(h[i]-abs[i-2])
    cost[i] = min(sgl,dbl)
print(cost[n])

Fixed code:
n = int(input())
h = list(map(int,input().split()))
cost = [100000] * n
cost[0] = 0
cost[1] = abs(h[0]-h[1])
for i in range(2,n):
    sgl = cost[i-1] + abs(h[i]-h[i-1])
    dbl = cost[i-2] + abs(h[i]-h[i-2])
    cost[i] = min(sgl,dbl)
print(cost[-1])
Buggy code:
N = int(input())
costlist = list(map(int,input().split()))
DP = [0 for i in range(N)]
DP[1]=abs(costlist[1]-costlist[0])
for i in range(N-2):
    probmin1 = abs(costlist[i+2]-costlist[i+1]) + costlist[i+1]
    probmin2 = abs(costlist[i+2]-costlist[i]) + costlist[i]
    plusmin = min(probmin1,probmin2) 
    DP[i+2]=plusmin
print(DP[-1])

Fixed code:
N = int(input())
costlist = list(map(int,input().split()))
DP = [0 for i in range(N)]
DP[1]=abs(costlist[1]-costlist[0])
for i in range(N-2):
    probmin1 = abs(costlist[i+2]-costlist[i+1]) + DP[i+1]
    probmin2 = abs(costlist[i+2]-costlist[i]) + DP[i]
    plusmin = min(probmin1,probmin2) 
    DP[i+2]=plusmin
print(DP[-1])
Buggy code:
N = int(input())
h = [int(i) for i in input().split()]
dp = [float("inf")]*N

dp[0] = 0

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

print(dp[-1])

Fixed code:
N = int(input())
h = [int(i) for i in input().split()]
dp = [float("inf")]*N

dp[0] = 0

for i in range(1, N):
    dp[i] = min(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[-1])
Buggy code:
import numpy as np

N = int(input())
heights = [int(i) for i in input().split()]

dp = np.full((N), np.Inf)

dp[0] = 0
dp[1] = heights[1] - heights[0]


for i in range(2, N):
    dp[i] = min(
        dp[i-2] + abs(heights[i] - heights[i-2]),
        dp[i-1] + abs(heights[i] - heights[i-1]),
    )

print(int(dp[N-1]))


Fixed code:
import numpy as np

N = int(input())
heights = [int(i) for i in input().split()]

dp = np.full((N), np.Inf)

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


for i in range(2, N):
    dp[i] = min(
        dp[i-2] + abs(heights[i] - heights[i-2]),
        dp[i-1] + abs(heights[i] - heights[i-1]),
    )
    

print(int(dp[N-1]))
Buggy code:
n = int(input())
h = list(map(int,input().split()))

INF = 10 ** 20

dp = [INF]*(n+1)
dp[0] = dp[1] = 0
dp[2] = h[1]-h[0]
 
coin_list = list(map(int,input().split()))
 
for i in range(3,n+1):
    dp[i] = min(dp[i-1]+abs(h[i]-h[i-1]), dp[i-2]+abs(h[i]-h[i-2]))
 
print(dp[n])

Fixed code:
n = int(input())
h = list(map(int,input().split()))

INF = 10 ** 20

dp = [INF]*(n)
dp[0] = 0
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])
Buggy code:
n = int(input())
h = list(map(int,input().split()))

dp = [None]*n

for i in range(n):
  if i == 0:
    dp[i] = 0

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

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

Fixed code:
n = int(input())
h = list(map(int,input().split()))
 
dp = [None]*n
 
for i in range(n):
  if i == 0:
    dp[0] = 0
    continue
    
  if i == 1:
    dp[1] = abs(h[1] - h[0])
    continue
    
  dp[i] = min(dp[i-2] + abs(h[i] - h[i-2]), dp[i-1] + abs(h[i] - h[i-1]))
  
  
print(dp[n-1])
Buggy code:
N=int(input())
H=list(map(int,input().split()))
cost=0
t1,t2=0,0
A=[0]*(N)
i=1
while i<N:
  if i==1:
    A[i]=abs(H[i]-H[i-1])
    #print(i,A[i])
  elif i==2:
    t1=abs(H[i]-H[i-2])
    t2=abs(H[i]-H[i-1])+abs(H[i-2]-H[i-1])
    A[i]=min(t1,t2)
    #print(i,A[i],t1,t2)
  else:
    t1=abs(H[i]-H[i-1])+A[i-1]
    t2=abs(H[i]-H[i-2])+A[i-2]
    A[i]=min(t1,t2)
    #print(i,A[i],t1,t2)
  i=i+1

Fixed code:
N=int(input())
H=list(map(int,input().split()))
cost=0
t1,t2=0,0
A=[0]*(N)
i=1
while i<N:
  if i==1:
    A[i]=abs(H[i]-H[i-1])
    #print(i,A[i])
  elif i==2:
    t1=abs(H[i]-H[i-2])
    t2=abs(H[i]-H[i-1])+abs(H[i-2]-H[i-1])
    A[i]=min(t1,t2)
    #print(i,A[i],t1,t2)
  else:
    t1=abs(H[i]-H[i-1])+A[i-1]
    t2=abs(H[i]-H[i-2])+A[i-2]
    A[i]=min(t1,t2)
    #print(i,A[i],t1,t2)
  i=i+1
#print(A)
print(A[N-1])
Buggy code:
N=int(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]=dp[i-2]+min(abs(h[i-2]-h[i]),abs(h[i]-h[i-1])+abs(h[i-1]-h[i-2]))
    
print(dp[N-1])   

Fixed code:
n = int(input())
h = list(map(int, input().split()))

dp = [10000] * n
dp[0] = 0
dp[1] = abs(h[1] - h[0])

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])
Buggy code:
import numpy as np

n = map(int, input())
h_list = [int(i) for i in input().split()]

dp = np.zeros((len(h_list)))
dp[1] = h_list[1]-h_list[0]

for i in range(2,len(h_list)):
    temp1 = dp[i-1] + abs(h_list[i] - h_list[i-1])
    temp2 = dp[i-2] + abs(h_list[i] - h_list[i-2])
    dp[i] = min(temp1, temp2)
    
    
print(dp[-1])

Fixed code:
import numpy as np

n = map(int, input())
h_list = [int(i) for i in input().split()]
h_list = np.array(h_list)

dp = np.zeros((len(h_list)))
dp[1] = np.abs(h_list[1]-h_list[0])

for i in range(2,len(h_list)):
    temp1 = dp[i-1] + np.abs(h_list[i] - h_list[i-1])
    temp2 = dp[i-2] + np.abs(h_list[i] - h_list[i-2])
    dp[i] = min(temp1, temp2)
    
    
print(int(dp[-1]))
Buggy code:
N = int(input())
H = list(map(int, input().split()))

inf = float('inf')
dp = [inf] * (N + 1)
dp[1] = 0

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

print(dp[N])


Fixed code:
N = int(input())
h = list(map(int,input().split()))
dp = [float('inf') for i 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])
Buggy code:
n=int(input())
h=list(map(int,input().split()))
lst=[10001]*n
lst[0]=0
lst[1]=h[1]-h[0]
for i in range(n-2):
  a=lst[i]+abs(h[i+2]-h[i])
  b=lst[i]+abs(h[i+2]-h[i+1])
  lst[i+2]=(a if b>a else b)
print(lst[n-1])
  

Fixed code:
n=int(input())
h=list(map(int,input().split()))
lst=[10001]*n
lst[0]=0
lst[1]=abs(h[1]-h[0])
for i in range(n-2):
  a=lst[i]+abs(h[i+2]-h[i])
  b=lst[i+1]+abs(h[i+2]-h[i+1])
  lst[i+2]=(a if b>a else b)
print(lst[n-1])
Buggy code:
dp = {}

n = int(input())
h = [int(x) for x in input().split()]

dp[0] = 0
dp[1] = h[1] - h[0]

for x in range(2, n):
  dp[x] = min(
    dp[x - 1] + abs(h[x] - h[x - 1]),
    dp[x - 2] + abs(h[x] - h[x - 2])
  )

print(dp[n-1])

Fixed code:
dp = {}

n = int(input())
h = [int(x) for x in input().split()]

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

for x in range(2, n):
  dp[x] = min(
    dp[x - 1] + abs(h[x] - h[x - 1]),
    dp[x - 2] + abs(h[x] - h[x - 2])
  )

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

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

def main():
	n = int(input())
	costs = list(map(int, input().split()))
	
	if n==1: return 0
	# each cur represents minimum cost needed to reach the step
	two_before = 0
	one_before = costs[1] - costs[0]
	for step in range(2, n):
		two_before, one_before = one_before, min(one_before + abs(costs[step] - costs[step-1]), two_before + abs(costs[step] - costs[step - 2]))
	return one_before

print(main())


Fixed code:
def main():
	n = int(input())
	costs = list(map(int, input().split()))
	
	if n==1: return 0
	# each cur represents minimum cost needed to reach the step
	two_before = 0
	one_before = abs(costs[1] - costs[0])
	for step in range(2, n):
		two_before, one_before = one_before, min(one_before + abs(costs[step] - costs[step-1]), two_before + abs(costs[step] - costs[step - 2]))
	return one_before


print(main())
Buggy code:
a = input()
hs = [int(x) for x in input().split()]
print(hs)

dp = [0]* len(hs)
print(dp)
if len(hs) == 1:
  print(hs[0])
  exit()

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

if len(hs) == 2:
  print(hs[1])
  exit()

for i in range(2, len(hs)):
  dp[i] = min(abs(hs[i] - dp[i-1]), abs(hs[i] - dp[i-2]))

print(dp[-1])

Fixed code:
a = int(input())


hs = [int(x) for x in input().split()]

if a == 1:
  print(0)
  exit()
dp = [0]* len(hs)


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

for i in range(2, a):
  dp[i] = min(abs(hs[i-1]- hs[i]) + dp[i-1], abs(hs[i-2]- hs[i]) + dp[i-2] )
  
print(dp[-1])
Buggy code:
N = int(input())
hs = map(int, input().split())
costs = [0] * N
costs[0] = 0
costs[1] = abs(hs[1]-hs[0])
for i in range(2, N):
    costs[i] = min(costs[i-1]+abs(hs[i]-hs[i-1]),
                   costs[i-2]+abs(hs[i]-hs[i-2]))
print(costs[N-1])

Fixed code:
N = int(input())
hs = list(map(int, input().split()))
costs = [0] * N
costs[0] = 0
costs[1] = abs(hs[1]-hs[0])
for i in range(2, N):
  costs[i] = min(costs[i-1]+abs(hs[i]-hs[i-1]),
                 costs[i-2]+abs(hs[i]-hs[i-2]))
print(costs[N-1])
Buggy code:
N = int(input())
h = list(map(int, input().split()))
dp = [float('inf')]*N
dp[0] = 0
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])

Fixed code:
N = int(input())
H = list(map(int, input().split()))

INF = float("inf")
dp = [INF] * (N + 1)
dp[0] = 0
dp[1] = abs(H[0] - H[1])
for i in range(2, N):
    dp[i] = min(dp[i - 1] + abs(H[i - 1] - H[i]), dp[i - 2] + abs(H[i - 2] - H[i]))

print(dp[-2])
Buggy code:
N = int(input())
h = list(map(int,input().split()))
DP = [10**9]*N
DP[0] = 0
#DP[1] = abs(h[1]-h[0])
DP[1] = min(DP[1],DP[0]+abs(h[0]-h[1]))
for i in range(N-2):
    DP[i+1] = min(DP[i+1],DP[i]+abs(h[i]-h[i+1]))    
    DP[i+2] = min(DP[i+2],DP[i]+abs(h[i]-h[i+2])) 
    
print(DP)


Fixed code:

N = int(input())
h = list(map(int,input().split()))
DP = [10**9]*N
DP[0] = 0
DP[1] = abs(h[1]-h[0])
for i in range(2,N):
    DP[i] = min(DP[i],DP[i-2]+abs(h[i]-h[i-2]))    
    DP[i] = min(DP[i],DP[i-1]+abs(h[i]-h[i-1])) 
    
print(DP[-1])
Buggy code:
n = int(input())
H = list(map(int, input().split()))
inf = 10**10
cost = [None]*n
h1 = [None]*(n-1)
h2 = [None]*(n-2) 
one_ago = H[1]
two_ago = H[0]
h1[0] = abs(two_ago-one_ago)
for i in range(1, n-1):
    new = H[i]
    h1[i] = abs(one_ago-new)
    h2[i-1] = abs(two_ago-new)
    two_ago, one_ago = one_ago, new
cost[0], cost[1] = 0, h1[0]
for i in range(2, n):
    cost[i] = min(cost[i-2]+h2[i-2], cost[i-1]+h1[i-1])
print(cost[n-1])

Fixed code:
n = int(input())
H = list(map(int, input().split()))
cost = [None]*n
h1 = [None]*(n-1)
h2 = [None]*(n-2) 
one_ago = H[1]
two_ago = H[0]
h1[0] = abs(two_ago-one_ago)
for i in range(2, n):
    new = H[i]
    h1[i-1] = abs(one_ago-new)
    h2[i-2] = abs(two_ago-new)
    two_ago, one_ago = one_ago, new
cost[0], cost[1] = 0, h1[0]
for i in range(2, n):
    cost[i] = min(cost[i-2]+h2[i-2], cost[i-1]+h1[i-1])
print(cost[n-1])
Buggy code:
n = int(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-2]), dp[i-1] + abs(h[i] - h[i-1]))
print(dp[-1])

Fixed code:
n = int(input())
dp = [0]*n
h = list(map(int,input().split()))

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])
Buggy code:
N=int(input())
H=list(map(int,input().split()))
dplist=[0 for i in range(N)]
dplist[0]=0
dplist[1]=H[1]-H[0]
for i in range(2,N-1):
  dplist[i]=min(dplist(i-1)+abs(H[i]-H[i-1]),dplist(i-2)+abs(H[i-2]-H[i]))
print(dolist(N-1))

Fixed code:
N=int(input())
H=list(map(int,input().split()))
dplist=[0 for i in range(N)]
dplist[0]=0
dplist[1]=abs(H[1]-H[0])
for i in range(2,N):
  dplist[i]=min(dplist[i-1]+abs(H[i]-H[i-1]),dplist[i-2]+abs(H[i-2]-H[i]))
print(dplist[N-1])
Buggy code:
def main():
    n = int(input())
    hs = list(map(int, input().split()))

    INF = 10 ** 12
    dp = [INF] * n
    dp[0] = 0
    dp[1] = hs[1] - hs[0]

    for i in range(2, n):
        dp[i] = min(dp[i], dp[i - 1] + abs(hs[i] - hs[i - 1]))
        dp[i] = min(dp[i], dp[i - 2] + abs(hs[i] - hs[i - 2]))

    print(dp[-1])


if __name__ == "__main__":
    main()


Fixed code:
def main():
    n = int(input())
    hs = list(map(int, input().split()))

    INF = 10 ** 12
    dp = [INF] * n
    dp[0] = 0
    dp[1] = abs(hs[1] - hs[0])

    for i in range(2, n):
        dp[i] = min(dp[i], dp[i - 1] + abs(hs[i] - hs[i - 1]))
        dp[i] = min(dp[i], dp[i - 2] + abs(hs[i] - hs[i - 2]))

    print(dp[-1])


if __name__ == "__main__":
    main()
Buggy code:
size = int(input())
array =  list(map(int, input().split()))
dp = [0]* size
for i in range(1,size):
	dp[i] = min(
	dp[i-1] + abs(array[i] - array[i-1]),
	dp[i-2] ,abs( array[i] - array[i-2] )]
	)
print(dp[-1])
		

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

Fixed code:
n=int(input())
h=list(map(int,input().split()))
DP=[0,abs(h[0]-h[1])]
for i in range(n-2):
    DP+=[min(DP[-1]+abs(h[i+1]-h[i+2]),DP[-2]+abs(h[i]-h[i+2]))]
print(DP[-1])
Buggy code:
N = int(input())
h = list(map(int, input().split()))

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

for i in range(2,N):
     t1 = dp[i - 2] + abs(h[i] - h[i - 2])
     t2 = dp[i - 1] + abs(h[i] - h[i - 1])
     dp[i] = min(t1, t2)



print(dp[N-1])

Fixed code:
N = int(input())
h = list(map(int, input().split()))

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

for i in range(2,N):
     t1 = dp[i - 2] + abs(h[i] - h[i - 2])
     t2 = dp[i - 1] + abs(h[i] - h[i - 1])
     dp.append(min(t1, t2))



print(dp[N-1])
Buggy code:
n = int(input())
*H, = map(int, input().split())
DP = [0 for i in range(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]))
print(DP[n-1])

Fixed code:
n = int(input())
*H, = map(int, input().split())
DP = [0 for i in range(n)]
DP[1] = abs(H[0]-H[1])
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[n-1])
Buggy code:
n = int(input())
h = list(map(int, input().split()))
dp = [float('inf')] * n
dp[0] = 0
dp[1] = abs(h[0] - h[1])
for i in range(2, n - 1):
    dp[i] = max((dp[i - 2] + abs(h[i - 2] - h[i])), (dp[i - 1] + abs(h[i - 1] - h[i])))
print(dp[n - 1])

Fixed code:
n = int(input())
h = list(map(int, input().split()))
dp = [float('inf')] * n
dp[0] = 0
dp[1] = abs(h[0] - h[1])
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[-1])
Buggy code:
n = int(input())
h = list(map(int, input().split()))
dp = [float('inf')] * n
dp[0] = 0
dp[1] = abs(h[0] - h[1])
for i in range(2, n - 1):
    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])

Fixed code:
n = int(input())
h = [int(x) for x in input().split()]
dp = [float("inf")]*n
dp[0] = 0
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])
Buggy code:
N, K = map(int, input().split())
K = 2
*h, = map(int, input().split())
a = [abs(h[0] - h[k]) for k in range(K)]
for n in range(N - K):
    a = a[1:] + [min([a[k] + abs(h[n + k] - h[n + K]) for k in range(K)])]
print(a[K - 1])


Fixed code:
N, K = int(input()), 2
*h, = map(int, input().split())
a = [abs(h[0] - h[k]) for k in range(K)]
for n in range(N - K):
    a = a[1:] + [min([a[k] + abs(h[n + k] - h[n + K]) for k in range(K)])]
print(a[K - 1])
Buggy code:
N = int(input())
h = list(map(int, input().split()))
a, b = 0, abs(h[-1] - h[-2])
for n in range(0, N - 2):
    a, b = b, min(b + abs(h[-(n + 3)] - h[-(n + 2)]),
                  a + abs(h[-(n + 3)] - h[-(n + 1)]))
print(a)


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

Fixed code:
n = int(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(dp[i - k] + abs(h[i]-h[i-k]) for k in [1, 2])

print(dp[-1])
Buggy code:
import sys

def chmin(a,i,b):
  if a[i] > b:
    a[i] = b
    #print(a)
    return True
  else:
    return False

n = int(input())
h = list( map(int,input().split()))
dp = [sys.maxsize for i in range(n)]

dp[0] = 0
print(n,h)
print(dp)

for i in range(len(dp)):
  if i - 1 >= 0:
    chmin(dp,i, abs(h[i]-h[i-1]))

  if i - 2 >= 0:
    chmin(dp,i, abs(h[i]-h[i-2]))
    
print(dp)   
print(dp[-1])

Fixed code:
import sys

def chmin(a,i,b):
  if a[i] > b:
    a[i] = b
    #print(a)
    return True
  else:
    return False

n = int(input())
h = list( map(int,input().split()))
dp = [sys.maxsize for i in range(n)]

dp[0] = 0
#print(n,h)
#print(dp)

for i in range(len(dp)):
  if i - 1 >= 0:
    chmin(dp,i, abs(h[i]-h[i-1])+dp[i-1])

  if i - 2 >= 0:
    chmin(dp,i, abs(h[i]-h[i-2])+dp[i-2])
    
#print(dp)   
print(dp[-1])
Buggy code:
N = int(input())
h = [int(x) for x in input().split()]

def chmin(a, b):
    return a if a <= b else b

dp = [float('inf')] * N
dp[0] = 0
for i in range(1, N):
    dp[i] = chmin(dp[i], dp[i-1] + abs(h[i] - h[i-1]))
    if i > 1:
        dp[i] = chmin(dp[i], dp[i-2] + abs(h[i] - h[i-2]))
        
print(dp[1])

Fixed code:
N = int(input())
h = [int(x) for x in input().split()]

def chmin(a, b):
    return a if a <= b else b

dp = [float('inf')] * N
dp[0] = 0
for i in range(1, N):
    dp[i] = chmin(dp[i], dp[i-1] + abs(h[i] - h[i-1]))
    if i > 1:
        dp[i] = chmin(dp[i], dp[i-2] + abs(h[i] - h[i-2]))
        
print(dp[-1])
Buggy code:
import sys
input = sys.stdin.readline
import numpy as np

N = int(input())
hight_list = np.array([int(item) for item in input().split()])

dp = np.full(N, hight_list.sum(), dtype='int64')

for i in range(2, N):
    cost1 = abs(hight_list[i-1] - hight_list[i])
    cost2 = abs(hight_list[i-2] - hight_list[i])
    dp[i] = min(dp[i-1] + cost1, dp[i-2] + cost2)

print(dp[N-1])

Fixed code:
import sys
input = sys.stdin.readline
import numpy as np

N = int(input())
hight_list = np.array([int(item) for item in input().split()])

dp = np.full(N, hight_list.sum(), dtype='int64')
dp[0] = 0
dp[1] = abs(hight_list[1] - hight_list[0])

for i in range(2, N):
    cost1 = abs(hight_list[i-1] - hight_list[i])
    cost2 = abs(hight_list[i-2] - hight_list[i])
    dp[i] = min(dp[i-1] + cost1, dp[i-2] + cost2)
    # print(dp)

print(dp[N-1])
Buggy code:
n=int(input())
h=list(map(int,input().split()))
dp=[]
dp[0]=0
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])

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

Fixed code:
N = int(input())
H = [int(i) for i in input().split()]
dp = []
for n in range(N):
    if n == 0:
        dp.append(0)
    elif n== 1:
        dp.append(abs(H[n] - H[n-1]) + dp[-1])
    else:
        dp.append(
            min(
                abs(H[n] - H[n-1])+dp[-1]
                ,abs(H[n] - H[n-2])+dp[-2]
            )
        )
print(dp[-1])