qyliang/CodeNanoFix huggingface dataset:
Buggy code:
n=int(input())
l=list(map(int,input().split()))
m=[0,abs(l[1]-l[0])]
if n==2:
    print(m[1])
else:
    p1=abs(l[2]-l[0])
    p2=abs(m[1]+l[2]-l[1])
    m.append(min(p1,p2))
    print(m[-1])
    for i in range(3,n):
        p1=m[-3]+abs(l[-1]-l[-3])
        p2=m[-2]+abs(l[-1]-l[-2])
        m.append(min(p1,p2))
        print(m[i])
    print(abs(m[-1]))

Fixed code:
n=int(input())
l=list(map(int,input().split()))
m=[0,abs(l[1]-l[0])]
if n==2:
    print(m[1])
else:
    p1=abs(l[2]-l[0])
    p2=m[1]+abs(l[2]-l[1])
    m.append(min(p1,p2))
    for i in range(3,n):
        p1=m[i-2]+abs(l[i]-l[i-2])
        p2=m[i-1]+abs(l[i]-l[i-1])
        m.append(min(p1,p2))
    print(abs(m[-1]))
Buggy code:
N = int(input())
h = [0] + list(map(int, input().split()))
dp = [0] * (N+1)
dp[2] = h[2] - h[1]
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()))
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]-h[i-2]),dp[i-1]+abs(h[i]-h[i-1]))
print(dp[-1])
Buggy code:
N=int(input())
height_list=list(map(int,input().split()))
score_list=[ 0, abs(height_list[0]-height_list[1]) ]



for i in range(2,N):

    tmp=min(
        abs(height_list[i]-height_list[i-1])+score_list[i-1],
        abs(height_list[i]-height_list[i-2])+score_list[i-2]
    )

    score_list.append(tmp)

print(score_list)



Fixed code:
N=int(input())
height_list=list(map(int,input().split()))
score_list=[ 0, abs(height_list[0]-height_list[1]) ]



for i in range(2,N):

    tmp=min(
        abs(height_list[i]-height_list[i-1])+score_list[i-1],
        abs(height_list[i]-height_list[i-2])+score_list[i-2]
    )

    score_list.append(tmp)

print(score_list[N-1])
Buggy code:
import sys
sys.setrecursionlimit(10**9)
dp=[-1]*(10**9+2)
def frog(arr,N):
    if N==0:
        dp[0]=arr[0]
        return dp[0]
    elif N==1:
        dp[1]=abs(arr[1]-arr[0])
        return dp[1]
    elif N==2:
        dp[2]=min(frog(arr,N-1)+abs(arr[N]-arr[N-1]),abs(arr[N]-arr[N-2]))
        return dp[2]
    else:
        if dp[N]!=-1:
            return dp[N]
        dp[N]=min(frog(arr,N-2)+abs(arr[N]-arr[N-2]),frog(arr,N-1)+abs(arr[N]-arr[N-1]))
        return dp[N]
if __name__ == "__main__":
    N=int(input())
    h=[int(i) for i in input().split()][:N]
    print(frog(h,N-1))

Fixed code:
'''
                        *             * * * * * * * *
                        *             *
                        *             *
                        *             *
                        *             *
                        *             *
                        *             *
                        * * * * * * * * * * * * * * *
                                      *             *
                                      *             *
                                      *             *
                                      *             *
                                      *             *
                                      *             *
                        * * * * * * * *             *

'''
import sys
sys.setrecursionlimit(10**7)
dp=[-1]*(10**5+2)
def frog(arr,N):
    if N==0:
        dp[0]=0
        return dp[0]
    elif N==1:
        dp[1]=abs(arr[1]-arr[0])
        return dp[1]
    elif N==2:
        dp[2]=min(frog(arr,N-1)+abs(arr[N]-arr[N-1]),abs(arr[N]-arr[N-2]))
        return dp[2]
    else:
        if dp[N]!=-1:
            return dp[N]
        dp[N]=min(frog(arr,N-2)+abs(arr[N]-arr[N-2]),frog(arr,N-1)+abs(arr[N]-arr[N-1]))
        return dp[N]
if __name__ == "__main__":
    N=int(input())
    h=[int(i) for i in input().split()][:N]
    frog(h,N-1)
    print(dp[N-1])
Buggy code:
import sys
n = int(input())
a = list(map(int,input().split())

dp = [sys.maxsize]*n
dp[0] = 0
for i in range(n):
	for j in (i+1,i+2):
         if j < n:
         	dp[j] = min(dp[j], dp[i]+abs(dp[i]-dp[j]))
print(dp[n-1],end="")

Fixed code:
import sys

n = int(input())
a = list(map(int, input().split()))

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

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

for i in range(2,n):
    dp.append(min(dp[i-1] + abs(h[i]-h[i+1]), dp[i] + abs(h[i]-h[i+2])))
    
print(dp[-1])

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

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

print(dp[N-1])
Buggy code:
def hoge():
  dp =[0] * (n + 1)
  dp[0] = 0
  dp[1] = abs(h_list[1] - h_list[0])
  for i in range(1, n):
    dp[i + 1] = min(dp[i - 2] + abs(h_list[i - 2] - h_list[i]), dp[i - 1] + abs(h_list[i - 1] - h_list[i]))
  return dp[n]

def solve():
  global n, h_list
  n = int(input())
  h_list = list(map(int, input().split()))
  ans = hoge()
  print(ans)
  return 0

if __name__ == "__main__":
  solve()

Fixed code:
def hoge():
  dp = [0] * (n + 5)
  dp[1] = abs(h_list[1] - h_list[0])
  for i in range(2, n):
    dp[i] = min(
      dp[i - 2] + abs(h_list[i] - h_list[i - 2]),
      dp[i - 1] + abs(h_list[i] - h_list[i - 1])
      )
  return dp[n - 1]

def solve():
  global n, h_list
  n = int(input())
  h_list = list(map(int, input().split()))
  ans = hoge()
  print(ans)
  return 0

if __name__ == "__main__":
  solve()
Buggy code:
#!/usr/bin/env python3

def main():
    N = int(input())
    h = list(map(int, input().split()))

    h.append(INF)
    h.append(INF)
    
    INF = 1 << 60
    dp = [INF] * 100010

    dp[0] = 0

    for i in range(N):
        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[N-1])


if __name__ == "__main__":
    main()


Fixed code:
#!/usr/bin/env python3

def main():
    N = int(input())
    h = list(map(int, input().split()))

    INF = 1 << 60
    
    h.append(INF)
    h.append(INF)

    dp = [INF] * 100010

    dp[0] = 0

    for i in range(N):
        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[N-1])


if __name__ == "__main__":
    main()
Buggy code:
N = int(input())
hs = np.array(list(map(int, input().split())))

i = 0
total_cost = 0

a = np.zeros(N, int)
a[0] = 0
a[1] = abs(hs[1] - hs[0])
for i in range(2, N):
    a[i] = min(a[max(i-2,0)] + abs(hs[i] - hs[max(i-2,0)]),
               a[max(i-1,0)] + abs(hs[i] - hs[max(i-1,0)]))
print(a[-1])


Fixed code:
import numpy as np

N = int(input())
hs = np.array(list(map(int, input().split())))

i = 0
total_cost = 0

a = np.zeros(N, int)
a[0] = 0
a[1] = abs(hs[1] - hs[0])
for i in range(2, N):
    a[i] = min(a[max(i-2,0)] + abs(hs[i] - hs[max(i-2,0)]),
               a[max(i-1,0)] + abs(hs[i] - hs[max(i-1,0)]))
print(a[-1])
Buggy code:
def main():
    N = int(input())
    h = list(map(int, input().split()))
    INF = 10**30
    h_dp = [INF] * N
    h_dp[0] = 0
    for i in range(1, N):
        h_dp[i] = min(h_dp[i], h_dp[i - 1] + abs(h[i] - h[i - 1]))
        if i > 2:
            h_dp[i] = min(h_dp[i], h_dp[i - 2] + abs(h[i] - h[i - 2]))
    print(h_dp[N - 1])


if __name__ == "__main__":
    main()


Fixed code:
def main():
    N = int(input())
    h = list(map(int, input().split()))
    INF = 10**30
    h_dp = [INF] * N
    h_dp[0] = 0
    for i in range(1, N):
        h_dp[i] = min(h_dp[i], h_dp[i - 1] + abs(h[i] - h[i - 1]))
        if i > 1:
            h_dp[i] = min(h_dp[i], h_dp[i - 2] + abs(h[i] - h[i - 2]))
    print(h_dp[N - 1])


if __name__ == "__main__":
    main()
Buggy code:
def solve():
    N = int(input())
    heights = map(int, input().split(" "))
    dp1 = 0
    dp2 = abs(heights[1] - heights[0])
    for i in range(2, N):
        tmp = dp2
        dp2 = min(
            dp2 + abs(heights[i] - heights[i-1]),
            dp1 + abs(heights[i] - heights[i-2])
        )
        dp1 = tmp
    print(dp2)

Fixed code:
def solve():
    N = int(input())
    heights = [int(c) for c in input().split(" ")]
    dp1 = 0
    dp2 = abs(heights[1] - heights[0])
    for i in range(2, N):
        tmp = dp2
        dp2 = min(
            dp2 + abs(heights[i] - heights[i-1]),
            dp1 + abs(heights[i] - heights[i-2])
        )
        dp1 = tmp
    print(dp2)

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

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

for i in range(1,n):
    if i==1:
        dp[i]=dp[i-1]+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])

Fixed code:
n=int(input())
h=list(map(int,input().split()))
inf=float("inf")
dp=[(inf) for i in range(n)]
dp[0]=0

for i in range(1,n):
    if i==1:
        dp[i]=dp[i-1]+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])
Buggy code:
N = int(input())
hs = [0] + [int(h) for h in input().split()]

dp = [0] * (N + 1)

for i in range(2, N + 1):
    cost_1 = dp[i - 1] + abs(hs[i] - hs[i - 1])
    cost_2 = dp[i - 2] + abs(hs[i] - hs[i - 2])
    dp[i] = min(cost_1, cost_2)

print(dp)


Fixed code:
N = int(input())
N_1 = N + 1
hs = [0] + [int(h) for h in input().split()]

dp = [0] * N_1
dp[2] = abs(hs[1] - hs[2])

for i in range(3, N_1):
    cost_1 = dp[i - 1] + abs(hs[i] - hs[i - 1])
    cost_2 = dp[i - 2] + abs(hs[i] - hs[i - 2])
    dp[i] = min(cost_1, cost_2)

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

for i in range(1,N):
  if i <= 2:
    dp[i] = abs(height[i]-height[0])
  if dp[i-1] < dp[i-2]:
    dp[i] = dp[i-1] + abs(height[i]-height[i-1])
  else:
    dp[i] = dp[i-2] + abs(height[i]-height[i-2])

print(dp[N-1])

Fixed code:
N = int(input())
height = list(map(int, input().split(" ")))
dp = [0]*N
 
for i in range(1,N):
  if i <= 2:
    dp[i] = abs(height[i]-height[0])
  else:
    dp[i] = min(dp[i-1] + abs(height[i]-height[i-1]), dp[i-2] + abs(height[i]-height[i-2]))

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

def dp(i):
  a, b = 0, abs(h[1]-h[0])
  if i == 0:
    return a
  for _ in range(i-1):
    a, b = b, min(a+abs(h[i]-h[i-2]), b+abs(h[i]-h[i-1]))
  return b
 
print(dp(N-1))

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

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

Cost = [1e7 for _ in range(N)]
Cost[0] = 0

for i in range(N-2):
  if (i+1 > N-1):
    continue
  Cost[i+1] = min(Cost[i+1], Cost[i] + abs(hs[i]-hs[i+1]))
  if (i+2 > N-1):
    continue
  Cost[i+2] = min(Cost[i+2], Cost[i] + abs(hs[i]-hs[i+2]))

print(Cost[N-1])

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

Cost = [1e10 for _ in range(N)]
Cost[0] = 0

for i in range(N):
  if (i+1 > N-1):
    continue
  Cost[i+1] = min(Cost[i+1], Cost[i] + abs(hs[i]-hs[i+1]))
  if (i+2 > N-1):
    continue
  Cost[i+2] = min(Cost[i+2], Cost[i] + abs(hs[i]-hs[i+2]))

print(Cost[N-1])
Buggy code:
def main():
    INF = 10**9
    N = int(input())
    h = list(map(int,input().split()))
    h.insert(0,0)
    dp = [INF]*(N+1)
    dp[0] = 0
    dp[1] = h[1]
    for i in range(2,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])

if __name__ == '__main__':
    main()

Fixed code:
def main():
    INF = 10**9
    N = int(input())
    h = list(map(int,input().split()))
    dp = [INF]*N
    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]-h[i-1]),dp[i-2]+abs(h[i]-h[i-2]))
    print(dp[N-1])

if __name__ == '__main__':
    main()
Buggy code:
N = int(input())
h = list(map(int,input().split()))
INF = 10**9
dp = [INF]*N
dp[0] = 0
dp[1] = abs(h[0]-h[1])
for i in range(2,N):
    dp1 = abs(h[i]-h[i-1])+dp[i-1]
    dp2 = abs(h[i]-h[i-2])+dp[i-2]
    dp[i] = min([dp1,dp2])
    print(dp)

Fixed code:
N = int(input())
h = list(map(int,input().split()))
INF = 10**9
dp = [INF]*N
dp[0] = 0
dp[1] = abs(h[0]-h[1])
for i in range(2,N):
    dp1 = abs(h[i]-h[i-1])+dp[i-1]
    dp2 = abs(h[i]-h[i-2])+dp[i-2]
    dp[i] = min([dp1,dp2])
print(dp[N-1])
Buggy code:
N = int(input())
h = [int(x) for x in input().split()]
dp = []
dp1 = 0
dp2 = 0
for i in range(N):
    if i == 0:
        dp.append(0)
        continue

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

    dp1 = dp[i - 1] + abs(h[i] - h[i - 1])
    dp2 = dp[i - 2] + abs(h[i] - h[i - 2])

    if dp1 < dp2:
        dp.append(dp1)
    else:
        dp.append(dp2)
return dp[-1]


Fixed code:
N = int(input())
h = [int(x) for x in input().split()]
dp = []
dp1 = 0
dp2 = 0
for i in range(N):
    if i == 0:
        dp.append(0)
        continue

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

    dp1 = dp[i - 1] + abs(h[i] - h[i - 1])
    dp2 = dp[i - 2] + abs(h[i] - h[i - 2])

    if dp1 < dp2:
        dp.append(dp1)
    else:
        dp.append(dp2)
print(dp[-1])
Buggy code:
n = int(input())
arr = [int(i) for i in list(input().split())]
# def helper(arr):
# 	if len(arr) <= 1:
# 		return 0
# 	if len(arr) == 2:
# 		return abs(arr[1] - arr[0])
# 	way1 = abs(arr[-1] - arr[-2]) + helper(arr[:-1])
# 	way2 = abs(arr[-1] - arr[-3]) + helper(arr[:-2])
# 	return min(way1, way2 )
if n == 1:
	print(0)
elif n == 2:
	print(abs(arr[1] - arr[0]))
else:
	dp = [0]*n
	for i in range(2,len(arr)):
		dp[i] = min(dp[i-1] + abs(arr[i] - arr[i-1]), dp[i-2] + abs(arr[i] - arr[i-2]))

	print(dp[n-1])

Fixed code:
n = int(input())
arr = [int(i) for i in list(input().split())]
def helper(arr):
	if len(arr) <= 1:
		return 0
	if len(arr) == 2:
		return abs(arr[1] - arr[0])
	way1 = abs(arr[-1] - arr[-2]) + helper(arr[:-1])
	way2 = abs(arr[-1] - arr[-3]) + helper(arr[:-2])
	return min(way1, way2 )

if n == 1:
	print(0)
elif n == 2:
	print(abs(arr[1] - arr[0]))
else:
	dp = [0]*n
	dp[0] = 0
	dp[1] = abs(arr[1] - arr[0])
	for i in range(2,len(arr)):
		dp[i] = min(dp[i-1] + abs(arr[i] - arr[i-1]), dp[i-2] + abs(arr[i] - arr[i-2]))
	print(dp[n-1])
# print(helper(arr))
Buggy code:
    def calc_cost(h):
        if (len(h) == 0):
            return 0
     
        cost = [None] * len(h)
        cost[0] = 0
        for i in range(1, len(h)):
            cost[i] = cost[i-1] + abs(h[i] - h[i-1])
            if i>1:
                cost[i] = min(cost[i], cost[i-2] + abs(h[i] - h[i-2]))
     
        return cost[len(h)-1]
     
    if __name__ == "__main__":
        n = int(input())
        h = list(map(int, input().split(" ")))
        res = calc_cost(h)
        print(res)

Fixed code:
def calc_cost(h):
    if (len(h) == 0):
        return 0

    cost = [None] * len(h)
    cost[0] = 0
    for i in range(1, len(h)):
        cost[i] = cost[i-1] + abs(h[i] - h[i-1])
        if i>1:
            cost[i] = min(cost[i], cost[i-2] + abs(h[i] - h[i-2]))

    return cost[len(h)-1]

if __name__ == "__main__":
    n = int(input())
    h = list(map(int, input().split(" ")))
    res = calc_cost(h)
    print(res)
Buggy code:
N = int(input())
h = list(map(int, input().split()))

dp = [0] * N

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

if N == 2:
    print(dp[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]))

print(dp[N-1])


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

dp = [10 ** 10] * 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:
def fu(n):
    if n<0:
        return (n*(-1))
    return n
n = int(input())
h = list(map(int,input().split()))

l1 = [0 for i in range(n)]
l1[n-1] = 0
l1[n-2] = abs(h[n-1]-h[n-2])
for i in range(n-3,-1,-1):
    l1[i] = min(abs(h[i]-h[i+1])+l1[i+1],abs(h[i]-h[i+2])+l1[i+2])
print(l1)
print(l1[0])

Fixed code:
def fu(n):
    if n<0:
        return (n*(-1))
    return n
n = int(input())
h = list(map(int,input().split()))

l1 = [0 for i in range(n)]
l1[n-1] = 0
l1[n-2] = abs(h[n-1]-h[n-2])
for i in range(n-3,-1,-1):
    l1[i] = min(abs(h[i]-h[i+1])+l1[i+1],abs(h[i]-h[i+2])+l1[i+2])
print(l1[0])
Buggy code:
import sys
import numpy as np
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

n = int(input())
h = np.array(read().split(),dtype=np.int32)
dp = np.zeros(n,dtype=np.int32)
k = 2

for i in range(1,n):

    l = max(i-k,0)
    dp[i] = np.min(np.abs(h[i]-h[l:i])+dp[l:i])

print(dp[-1])


Fixed code:
import sys
import numpy as np
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

n = int(readline())
k = 2
h = np.array(read().split(),dtype=np.int32)
dp = np.zeros(n,dtype=np.int32)

for i in range(1,n):
    l = max(i-k,0)
    dp[i] = np.min(np.abs(h[i]-h[l:i])+dp[l:i])
print(dp[-1])
Buggy code:
import math
n=int(input())
a=list(map(int, input().split() ) )
b=[0]*n
b[1]=int(math.fabs(a[0]-a[1]))
for i in range(2, n):
    b[i]=int(min(b[i-1]+math.fabs(a[i]-a[i-1]), b[i-2]+math.fabs(a[i]-a[i-2]) ) )
print(b)

Fixed code:
import math
n=int(input())
a=list(map(int, input().split() ) )
b=[0]*n
b[1]=int(math.fabs(a[0]-a[1]))
for i in range(2, n):
    b[i]=int(min(b[i-1]+math.fabs(a[i]-a[i-1]), b[i-2]+math.fabs(a[i]-a[i-2]) ) )
print(b[-1])
Buggy code:
N=int(input())
line=input().split(" ")
dp=[]
for i in range(N):
    line[i]=int(line[i])
    dp.append(10000000000)
dp[0]=0
dp[1]=abs(line[1]-line[0])
for j in range(2,N):
    dp[j]=min(dp[j], dp[j-1]+abs(line[j]-line[j-1]))
    dp[j]=min(dp[j], dp[j-2]+abs(line[j]-line[j-2]))
print(dp)

Fixed code:
N=int(input())
line=input().split(" ")
dp=[]
for i in range(N):
    line[i]=int(line[i])
    dp.append(10000000000)
dp[0]=0
dp[1]=abs(line[1]-line[0])
for j in range(2,N):
    dp[j]=min(dp[j], dp[j-1]+abs(line[j]-line[j-1]))
    dp[j]=min(dp[j], dp[j-2]+abs(line[j]-line[j-2]))
print(dp[N-1])
Buggy code:
N=int(input())
A=list(map(int,input().split()))
dp=[0]*(N)
dp[0]=0
dp[1]=0
dp[2]=abs(A[1]-A[0])
for i in range(3,N):
    dp[i]=min(dp[i-1]+abs(A[i-1]-A[i-2]),dp[i-2]+abs(A[i-1]-A[i-3]))

print(dp[N-1])

Fixed 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]=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:
import numpy as np
N = int(input())
h = list(map(int, input().split()))

dp = np.full(N, np.inf)
dp[0] = 0
for i in range(1,N):
  dp[i] = min(dp[i],dp[i-1]+np.abs(h[i] - h[i-1]))
  if i > 1: dp[i] = min(dp[i],dp[i-2]+np.abs(h[i] - h[i-2]))
print(dp[-1])

Fixed code:
import numpy as np
N = int(input())
h = list(map(int, input().split()))

dp = np.full(N, np.inf)
dp[0] = 0
for i in range(1,N):
  dp[i] = min(dp[i],dp[i-1]+np.abs(h[i] - h[i-1]))
  if i > 1: dp[i] = min(dp[i],dp[i-2]+np.abs(h[i] - h[i-2]))
print(int(dp[-1]))
Buggy code:
n = int(input())
h = list(map(int, input().split()))
dp=[0]*(n+1)
dp[1]=0
dp[2]=abs(h[0]-h[1])
for i in range(3,n+1):
    dp[i]=min(dp[i-2]+abs(h[i-3]-h[i-1]),dp[i-1]+abs(h[i-2]-h[i-1]))
    print(dp)
print(dp[-1])

Fixed code:
n = int(input())
h = list(map(int, input().split()))
dp=[0]*(n+1)
dp[1]=0
dp[2]=abs(h[0]-h[1])
for i in range(3,n+1):
    dp[i]=min(dp[i-2]+abs(h[i-3]-h[i-1]),dp[i-1]+abs(h[i-2]-h[i-1]))
print(dp[-1])
Buggy code:
n = int(input())
l = list(map(int, input().split()))
dp=[float('inf')]*n
dp[0]=0
dp[1]=abs(l[0]-l[1])
for i in range(2,n):
	dp[i]=min(abs(l[i-1]-l[i])+dp[i-1],abs(l[i-2]-l[i]+dp[i-2]))
print(dp[-1])

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

dp=[float("inf")]*n

dp[0]=0
dp[1]=abs(l[0]-l[1])
for i in range(n-2):
    dp[i+2]=min(dp[i]+abs(l[i]-l[i+2]),dp[i+1]+abs(l[i+1]-l[i+2]))
print(dp[-1])
Buggy code:
n=int(input())
l=list(map(int, input().split()))
inf=10**12
dp=[inf]*n
dp[0]=0
dp[1]=abs(l[0]-l[1])
for i in range(n-2):
	dp[i+2]=min(dp[i]+abs(l[i+2]-l[i]),dp[i+1]+abs(l[i+2]-l[i+1]))
print(dp)
print(dp[-1])

Fixed code:
n=int(input())
l=list(map(int, input().split()))
inf=10**12
dp=[inf]*n
dp[0]=0
dp[1]=abs(l[0]-l[1])
for i in range(n-2):
	dp[i+2]=min(dp[i]+abs(l[i+2]-l[i]),dp[i+1]+abs(l[i+2]-l[i+1]))
print(dp[-1])
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(n-2):
    DP[i+2]=min(DP[i]+abs(h[i]-h[i+2]),DP[i+1]+abs(h[i+2]-h[i+1]))
print(DP)

Fixed 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(n-2):
    DP[i+2]=min(DP[i]+abs(h[i]-h[i+2]),DP[i+1]+abs(h[i+2]-h[i+1]))
print(DP[-1])
Buggy code:
n = int(input())
h = [None] + list(map(int, input().split('')))

dp = [None for _ in range(n+1)]
for i in range(1,n+1):
  if i == 1:
    dp[i] = 0
  elif i ==2:
    dp[i] = abs(h[2] - h[1])
  else:
    dp[i] = min(
      dp[i-1] + abs(h[k] - h[k-1]),
      dp[i-2] + abs(h[k] - h[k-2])
    )
print(dp[i])

Fixed code:
n = int(input())
h = [None] + list(map(int, input().split()))

dp = [None for _ in range(n+1)]
for k in range(1,n+1):
  if k == 1:
    dp[k] = 0
  elif k == 2:
    dp[k] = abs(h[2] - h[1])
  else:
    dp[k] = min(
      dp[k-1] + abs(h[k] - h[k-1]),
      dp[k-2] + abs(h[k] - h[k-2])
    )
print(dp[k])
Buggy code:
N = int(input())
*h, = map(int, input().split())
dp = [float("inf") for _ in range(N)]
dp[0] = 0
for i in range(N - 1):
	dp[i + 1] = dp[i] + abs(h[i + 1] - h[i])
	if i < N - 2:
		dp[i + 2] =dp[i + 2], dp[i] + abs(h[i + 2] - h[i])
print(dp[N - 1])

Fixed code:
N = int(input())
*h, = map(int, input().split())
dp = [float("inf") for _ 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,k = map(int, input().split())
n = int(input())
h = list(map(int,input().split()))
dp = [0] * n
dp[0] = 0
dp[1] = 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])
# dp[2] = min((h[2] - h[1])+dp[1], (h[2]-h[0])+dp[0])
# dp[3] = min((h[3] - h[2])+dp[2], (h[3]-h[1])+dp[1])
print(dp[-1])

Fixed code:

# n,k = map(int, input().split())
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] = min(abs(h[i]-h[i-1])+dp[i-1], abs(h[i]-h[i-2])+dp[i-2])
# dp[2] = min((h[2] - h[1])+dp[1], (h[2]-h[0])+dp[0])
# dp[3] = min((h[3] - h[2])+dp[2], (h[3]-h[1])+dp[1])
print(dp[-1])