qyliang/CodeNanoFix huggingface dataset:
Buggy code:
n = int(input())
h = list(map(int, input().split()))

ans = abs(h[1] - h[0])
l, ll = ans, 0

for i in range(2,n):
    print(abs(h[i] - h[i-1]),abs(h[i] - h[i-2]))
    ans = min(l + abs(h[i] - h[i-1]), ll + abs(h[i] - h[i-2]))
    l, ll = ans, l

print(ans)

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

ans = abs(h[1] - h[0])
l, ll = ans, 0

for i in range(2,n):
    ans = min(l + abs(h[i] - h[i-1]), ll + abs(h[i] - h[i-2]))
    l, ll = ans, l

print(ans)
Buggy code:
if __name__ == '__main__':
    n = int(input())
    h = list(map(int, input().split()))
    c = [0] * n
    c[1] = abs(h[1] - h[0])

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

    print(min(c))


Fixed code:
if __name__ == '__main__':
    n = int(input())
    h = list(map(int, input().split()))
    c = [0] * n
    c[1] = abs(h[1] - h[0])

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

    print(c.pop())
Buggy code:
n=int(input())
li=[int(k) for k in input().split()]
dp=[0]*(n)
dp[0]=li[0]
dp[1]=abs(li[1]-li[0])
for i in range(2,n):
  dp[i]=min(abs(li[i]-dp[i-1]),abs(li[i]-dp[i-2]))
print(dp[n-1]) 


Fixed code:
n=int(input())
li=[int(k) for k in input().split()]
dp=[0]*(n)
dp[0]=0
dp[1]=abs(li[1]-li[0])

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

dp=[0]*(N)

for i in range(1,N):
    if i==1:
        dp[i]=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)

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

dp = [0] * N
dp[N-2] = abs(h[N-2]-h[N-1])

if N > 2:
    for i in range(N-3, -1, -1):
        dp[i] = min(abs(h[i]-h[i+2])+dp[i+2], abs(h[i]-h[i+1])+dp[i+1])

print(dp[0])
Buggy code:
N=int(input())
H=list(map(int,input().split()))
dp=[float('inf')]*N
dp[0],dp[1]=0,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])


Fixed code:
N=int(input())
H=list(map(int,input().split()))
dp=[float('inf')]*N
dp[0],dp[1]=0,abs(H[1]-H[0])

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

print(dp[N-1])
Buggy code:
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(dp[i-2]+abs(H[i]-H[i-2]),dp[i-1]+abs(H[i]-H[i-1]))
print(dp[-1])

Fixed code:
n = int(input())
H = list(map(int,input().split()))
dp = [0]*(len(H))
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:
import math

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

res = [0]*n

for i in range(n):
  if i == 1:
    res[1] = abs(h[0] - h[1])
  temp1 = abs(h[i] - h[i-2])
  temp2 = abs(h[i] - h[i-1])
  
  res[i] = min(res[i-2] + temp1, res[i-1] + temp2)
  
print(res[n-1])

Fixed code:
import math
 
n = int(input())
h = list(map(int, input().split()))
 
res = [0]*n
 
for i in range(1, n):
  if i == 1:
    res[1] = abs(h[0] - h[1])
  else:
    temp1 = abs(h[i] - h[i-2])
    temp2 = abs(h[i] - h[i-1])
    
    res[i] = min(res[i-2] + temp1, res[i-1] + temp2)
  
print(res[n-1])
Buggy code:
def dp_a_frog1(stones):
    if len(stones) == 0:
        return 0
    dp = [0] * len(stones)
    for i in range(1, len(stones)):
        cost_jump = dp[i-1] + abs(stones[i-1] - stones[i])
        if i > 1:
            cost_jump_2 = dp[i-2] + abs(stones[i-2] - stones[i])
            cost_jump = min(cost_jump, cost_jump_2)
        dp[i] = cost_jump
    return dp[len(stones) - 1]
 

if __name__ == '__main__':
	N = int(input())
	h = list(map(int, input().split()))
    print(dp_a_frog1(h))
    

Fixed code:
def dp_a_frog1(stones):
    if len(stones) == 0:
        return 0
    dp = [0] * len(stones)
    for i in range(1, len(stones)):
        cost_jump = dp[i - 1] + abs(stones[i - 1] - stones[i])
        if i > 1:
            cost_jump_2 = dp[i - 2] + abs(stones[i - 2] - stones[i])
            cost_jump = min(cost_jump, cost_jump_2)
        dp[i] = cost_jump
    return dp[len(stones) - 1]


if __name__ == '__main__':
    N = int(input())
    h = list(map(int, input().split()))
    print(dp_a_frog1(h))
Buggy code:

# ########## ------ Import ------- ##########

import sys
import math
from collections import Counter
from collections import deque as deq
from functools import lru_cache

# ########## ------ Define -------- #########

INT_MAX = float("inf")
INT_MIN = float("-inf")

# ########## ------ Input Functions ---- #########

input = sys.stdin.readline


def inp():
    return(int(input()))


def inlt():
    return(list(map(int, input().split())))


def insr():
    s = input()
    return(list(s[:len(s) - 1]))


def invr():
    return(map(int, input().split()))


# ########## ------ Code ------- ##########
def go(i):
    if i == 0:
        dp[i] = 0
        return dp[i]
    if i == 1:
        dp[i] = abs(a[0] - a[i])
        return dp[i]

    if dp[i] != -1:
        return dp[i]

    dp[i] = min(abs(a[i] - a[i - 1]) + go(i - 1),
                abs(a[i] - a[i - 2]) + go(i - 2))
    return dp[i]


t = inp()
a = inlt()
dp = [-1] * (t)
if t == 1:
    print(0)
elif t == 2:
    print(abs(a[0] - a[i]))

else:
    dp[0] = 0
    dp[1] = abs(a[0] - a[1])
    for i in range(2, t):
        dp[i] = min(abs(a[i] - a[i - 1]) + dp[i - 1],
                    abs(a[i] - a[i - 2]) + dp[i - 2])


print(dp[t - 1])


Fixed code:

# ########## ------ Import ------- ##########

import sys
import math
from collections import Counter
from collections import deque as deq
from functools import lru_cache

# ########## ------ Define -------- #########

INT_MAX = float("inf")
INT_MIN = float("-inf")

# ########## ------ Input Functions ---- #########

input = sys.stdin.readline


def inp():
    return(int(input()))


def inlt():
    return(list(map(int, input().split())))


def insr():
    s = input()
    return(list(s[:len(s) - 1]))


def invr():
    return(map(int, input().split()))


# ########## ------ Code ------- ##########
def go(i):
    if i == 0:
        dp[i] = 0
        return dp[i]
    if i == 1:
        dp[i] = abs(a[0] - a[i])
        return dp[i]

    if dp[i] != -1:
        return dp[i]

    dp[i] = min(abs(a[i] - a[i - 1]) + go(i - 1),
                abs(a[i] - a[i - 2]) + go(i - 2))
    return dp[i]


t = inp()
a = inlt()

if t == 1:
    print(0)
elif t == 2:
    print(abs(a[0] - a[1]))

else:
    dp=[-1]*t
    dp[0] = 0
    dp[1] = abs(a[0] - a[1])
    for i in range(2, t):
        dp[i] = min(abs(a[i] - a[i - 1]) + dp[i - 1],
                    abs(a[i] - a[i - 2]) + dp[i - 2])


    print(dp[t - 1])
Buggy code:

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

if t == 1:
    print(0)
elif t == 2:
    print(abs(a[0] - a[i]))

else:
    dp = [-1] * (t)
    dp[0] = 0
    dp[1] = abs(a[0] - a[1])
    for i in range(2, t):
        dp[i] = min(abs(a[i] - a[i - 1]) + dp[i - 1],
                    abs(a[i] - a[i - 2]) + dp[i - 2])


print(dp[t - 1])


Fixed code:

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

if t == 1:
    print(0)
elif t == 2:
    print(abs(a[0] - a[1]))

else:
    dp = [-1] * (t)
    dp[0] = 0
    dp[1] = abs(a[0] - a[1])
    for i in range(2, t):
        dp[i] = min(abs(a[i] - a[i - 1]) + dp[i - 1],
                    abs(a[i] - a[i - 2]) + dp[i - 2])

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

cost = [0] * n
cost[0] = 0
cost[1] = abs(heigt[1] - heigt[0])
cost[2] = abs(heigt[2] - heigt[0])

for i in range(3,n):
    cost[i] = min(cost[i-1] + abs(heigt[i] - heigt[i-1]),cost[i-2] + abs(heigt[i] - heigt[i-2]))

print(cost[n-1])

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

cost = [0] * n
cost[0] = 0
cost[1] = abs(heigt[1] - heigt[0])
if n == 2:
    print(cost[1])
else:
    cost[2] = abs(heigt[2] - heigt[0])
    if n == 3:
        print(cost[2])
    else:
        for i in range(3,n):
            cost[i] = min(cost[i-1] + abs(heigt[i] - heigt[i-1]),cost[i-2] + abs(heigt[i] - heigt[i-2]))

        print(cost[n-1])
Buggy code:
n=int(input())
a=list(map(int,input().split()))

dp=[0 for i in range(n)]
dp[0]=a[0]
dp[1]=abs(a[0]-a[1])
for i in range(n-2):
    dp[i+2]=abs(dp[i]-dp[i+2])
    dp[i+1]=abs(min(dp[i+1],dp[i]+abs(a[i+1]-a[i])))
if(n>2):
    dp[-1]=min(dp[-2]+abs(a[-1]-a[-2]),dp[-3]+abs(a[-3]-a[-2]))
else:
    dp[1]=dp[0]+abs(a[0]-a[1])
print(dp[-1])


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

dp=[0 for i in range(n)]
dp[0]=0
dp[1]=abs(a[0]-a[1])
for i in range(n-2):
    dp[i+2]=dp[i]+abs(a[i]-a[i+2])
    dp[i+1]=abs(min(dp[i+1],dp[i]+abs(a[i+1]-a[i])))
if(n>2):
    dp[-1]=min(dp[-2]+abs(a[-1]-a[-2]),dp[-3]+abs(a[-3]-a[-1]))
   
print(dp[-1])
Buggy code:
import sys
sys.setrecursionlimit(1000000000000000)
def doritto(vrijednost):
    global kameni
    global memo
    if memo[vrijednost] != -1:
        return memo[vrijednost]
    if vrijednost == len(kameni) -2:
        return abs(kameni[vrijednost] - kameni[vrijednost+1])
    elif vrijednost == len(kameni) -1:
        return 0
    a = abs(kameni[vrijednost] - kameni[vrijednost+1]) + doritto(vrijednost+1)
    b = abs(kameni[vrijednost] - kameni[vrijednost+2]) + doritto(vrijednost+2)
    memo[vrijednost] = min(a,b)
    return memo[vrijednost]
N = int(input())
kameni = list(map(int,input().split()))
memo = []
for i in range(N):
    memo.append(-1)
print(doritto(0))

Fixed code:
import sys
sys.setrecursionlimit(200000)
def doritto(vrijednost):
    global kameni
    global memo
    if memo[vrijednost] != -1:
        return memo[vrijednost]
    if vrijednost == len(kameni) -2:
        return abs(kameni[vrijednost] - kameni[vrijednost+1])
    elif vrijednost == len(kameni) -1:
        return 0
    a = abs(kameni[vrijednost] - kameni[vrijednost+1]) + doritto(vrijednost+1)
    b = abs(kameni[vrijednost] - kameni[vrijednost+2]) + doritto(vrijednost+2)
    memo[vrijednost] = min(a,b)
    return memo[vrijednost]
N = int(input())
kameni = list(map(int,input().split()))
memo = []
for i in range(N):
    memo.append(-1)
print(doritto(0))
Buggy code:
n=int(input())
A=list(map(int,input().split()))
dp=[inf for i in range(n)]
dp[0]=0
dp[1]=abs(A[1]-A[0])
for i in range(2,n):
	dp[i]=min(dp[i],abs(A[i-1]-A[i]),abs(A[i-2]-A[i]))
print(dp[n])

Fixed code:
n=int(input())
A=list(map(int,input().split()))
inf=float("inf")
dp=[inf for i in range(n)]
dp[0]=0
dp[1]=abs(A[1]-A[0])
for i in range(2,n):
	dp[i]=min(dp[i],abs(A[i-1]-A[i])+dp[i-1],abs(A[i-2]-A[i])+dp[i-2])
print(dp[n-1])
Buggy code:
# https://atcoder.jp/contests/dp/tasks/dp_a

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

dp = [0]
INF = max(h) + 1
for i in range(1, N):
    if i == 1:
        cost1 = abs(h[i] - h[i - 1])
        dp.append(cost1)
    if i == 2:
        cost1 = abs(h[i] - h[i - 1])
        cost2 = abs(h[i] - h[i - 2])
        dp.append(min(
            dp[i - 1] + cost1,
            dp[i - 2] + cost2,
        ))

answer = dp.pop()

print(answer)


Fixed code:
# https://atcoder.jp/contests/dp/tasks/dp_a

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

dp = [0]
for i in range(1, N):
    if i == 1:
        cost1 = abs(h[i] - h[i - 1])
        dp.append(cost1)
    if i >= 2:
        cost1 = abs(h[i] - h[i - 1])
        cost2 = abs(h[i] - h[i - 2])
        dp.append(min(
            dp[i - 1] + cost1,
            dp[i - 2] + cost2,
        ))
# print(dp)

answer = dp.pop()

print(answer)
Buggy code:
"""
author : halo2halo
date : 4, Feb, 2020
"""

import sys

# import itertools
# import math

# import numpy as np

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
INF = 10 ** 9

N, *H = map(int, read().split())
dp = [INF] * N
dp[0] = 0

for i in range(0, N-2):
    print(i)
    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)
print(dp[N-1])


Fixed code:
"""
author : halo2halo
date : 4, Feb, 2020
"""

import sys

# import itertools
# import math

# import numpy as np

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
INF = 10 ** 9

N, *H = map(int, read().split())
dp = [INF] * N
dp[0] = 0

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

print(dp[N - 1])
Buggy code:
"""
author : halo2halo
date : 4, Feb, 2020
"""

import sys

# import itertools
# import math

# import numpy as np

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N, *H = map(int, readline().split())
dp = [0] * N
dp[1] = abs(H[1] - H[0])

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

ans = dp[-1]
print(ans)


Fixed code:
"""
author : halo2halo
date : 4, Feb, 2020
"""

import sys

# import itertools
# import math

# import numpy as np

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N, *H = map(int, read().split())
dp = [0] * N
dp[1] = abs(H[1] - H[0])

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

ans = dp[-1]
print(ans)
Buggy code:
n = int(input()) # n >= 2
h = list(map(int, input().split())) # h_i >= 1

cost2 = 0;
cost1 = abs(h[1] - h[0]);

for i in range(2, n):
    cost = min(cost1 + abs(h[i] - h[i - 1]), cost2 + abs(h[i] - h[i - 2]))
    cost2, cost1 = cost1, cost
    

print(cost)

Fixed code:
n = int(input()) # n >= 2
h = list(map(int, input().split())) # h_i >= 1

cost2 = 0;
cost1 = abs(h[1] - h[0]);

for i in range(2, n):
    cost = min(cost1 + abs(h[i] - h[i - 1]), cost2 + abs(h[i] - h[i - 2]))
    cost2, cost1 = cost1, cost

print(cost1)
Buggy code:
N = int(input())
h = list(map(int, input.split()))

MAX_COST = 1001001001

cost_dp = [MAX_COST for _ in range(N)]

cost_dp[0] = 0

for i in range(N):
  if i == 1:
    cost_dp[1] = cost_dp[0] + abs(h[1] - h[0])
  else:
    cost_dp[i] = min(cost_dp[i-1] + abs(h[i] - h[i-1]), cost_dp[i-2] + abs(h[i] - h[i-2]))

print(cost_dp[N-1])

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

MAX_COST = 1001001001

cost_dp = [MAX_COST for _ in range(N)]

cost_dp[0] = 0

for i in range(N):
  if i == 0:
    continue
  elif i == 1:
    cost_dp[1] = cost_dp[0] + abs(h[1] - h[0])
  else:
    cost_dp[i] = min(cost_dp[i-1] + abs(h[i] - h[i-1]), cost_dp[i-2] + abs(h[i] - h[i-2]))

print(cost_dp[N-1])
Buggy code:
N = int(input())
h = list(map(int, input().split()))
DP = [10000]*7
DP[0] = 0
DP[1] = abs(h[1]-h[0])
for i in range(N-1):
  DP[i+1] = abs(h[i+1]-h[i])+DP[i]
  if i > 0:
    DP[i+1] = min(abs(h[i+1]-h[i])+DP[i], abs(h[i+1]-h[i-1])+DP[i-1])
print(DP)

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(N-1):
  DP[i+1] = abs(h[i+1]-h[i])+DP[i]
  if i > 0:
    DP[i+1] = min(abs(h[i+1]-h[i])+DP[i], abs(h[i+1]-h[i-1])+DP[i-1])
print(DP[N-1])
Buggy code:
N = int(input())
H = list(map(int, input().split()))

Cost = [0 for i in range(N)]
Cost[0] = 0
Cost[1] = abs(H[1] - H[0])

for i in range(2, N) :
    Min = min(Cost[i - 1] + abs(H[i] - H[i - 1]), Cost[i - 2] + abs(H[i] - H[i - 2]))

print(Cost[N - 1])

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

Cost = [0 for i in range(N)]
Cost[0] = 0
Cost[1] = abs(H[1] - H[0])

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

print(Cost[N - 1])
Buggy code:

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


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

dp = [0]
cost_initial = height[1] -height[0]
dp.append(cost_initial)

#print(dp)
#for h in height:

for i in range(len(height)-2):
    a1 = dp[i+1] + abs(height[i+2] - height[i+1])
    a2 = dp[i] + abs(height[i+2] - height[i])
    dp.append(min(a1, a2))

print(dp[-1])

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

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

#print(dp)
#for h in height:

for i in range(len(height)-2):
    a1 = dp[i+1] + abs(height[i+2] - height[i+1])
    a2 = dp[i] + abs(height[i+2] - height[i])
    dp.append(min(a1, a2))

print(dp[-1])
Buggy code:
n=int(input())
rec=list(map(int,input().split()))
s=[rec[0],rec[1]-rec[0]]
for i in range(2,n):
        total2=abs(rec[i]-rec[i-2])+s[i-2]
        total1=abs(rec[i]-rec[i-1])+s[i-1]
        s.append(min(total2,total))
print(s[-1])

Fixed code:
n=int(input())
rec=list(map(int,input().split()))
s=[0,abs(rec[1]-rec[0])]
for i in range(2,n):
        total2=abs(rec[i]-rec[i-2])+s[i-2]
        total1=abs(rec[i]-rec[i-1])+s[i-1]
        s.append(min(total2,total1))
print(s[-1])
Buggy code:
N = int(input())
A = list(map(int,input().split()))
dp = [0] * (N+10)
dp[2] = A[1] - A[0] 
for i in range(2,N):
    Ai = abs(A[i] - A[i-1])
    Ai2 = abs(A[i] - A[i-2])
    dp[i+1] = min(dp[i]+Ai,dp[i-1]+Ai2)

print(dp[N])

Fixed code:
N = int(input())
A = list(map(int,input().split()))
dp = [0] * (N+10)
dp[2] = abs(A[1] - A[0])
for i in range(2,N):
    Ai = abs(A[i] - A[i-1])
    Ai2 = abs(A[i] - A[i-2])
    dp[i+1] = min(dp[i]+Ai,dp[i-1]+Ai2)

print(dp[N])
Buggy code:
n = int(input())
costs = map(int, input().split())
a, b = cost[0], cost[0] + abs(costs[1]-cost[0])
i = 2
while i < n:
  a, b = b, min(abs(cost[i] - cost[i-1]) + b, abs(cost[i] - cost[i-2]) + a)
  i += 1
print(b)

Fixed code:
n = int(input())
costs = list(map(int, input().split()))
a, b = 0, abs(costs[1]-costs[0])
i = 2
while i < n:
	a, b = b, min(abs(costs[i] - costs[i-1]) + b, abs(costs[i] - costs[i-2]) + a)
	i += 1
print(b)
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 range(i+1,i+2+1):
      if j<n:
        dp[j] = min(dp[j],dp[i]+abs(a[i]-a[j]))
        
print(dp[n-1])

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 range(i+1,i+2+1):
    if j<n:
      dp[j]= min(dp[j],dp[i]+abs(a[i]-a[j]))
      
      
print(dp[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(n-2):
  dp(i+2)=min(dp[i]+abs(h[i+2]-h[i]),dp[i+1]+abs(h[i+2]-h[i]))
print(dp[n-1])

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

dp = [0]*n
dp[0] = 0
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 = int(input())
h = list(map(int, input().split()))
dp = [float('inf') for i in range(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)
print(dp[N-1])


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

for i in range(1, N):
	if i == 1:
		dp[i] = abs(arr[i] - arr[i-1])
	else:
		dp[i] = min(abs(arr[i]-arr[i-1]), abs(arr[i]-arr[i-1]))
print(dp[-1])

Fixed code:
N = int(input())
arr = list(map(int, input().split()))
dp = [0 for _ in range(N)]

for i in range(1, N):
	if i == 1:
		dp[i] = abs(arr[i] - arr[i-1])
	else:
		dp[i] = min(dp[i-1]+abs(arr[i]-arr[i-1]), dp[i-2]+abs(arr[i]-arr[i-2]))
print(dp[-1])
Buggy code:
def cal_min_cost(cnt):
    return min([
      abs(hight_list[i] - hight_list[i-diff]) + cost_list[i-diff])
      for diff in range(1,3)
      ])

hight_list = []
cost_list = [0,0]
N = int(input())
hight_list = list(map(int, input().split()))
hight_list.insert(0,self.hight_list[0])
for i in range(2, N+1):
    cost_list.append(cal_min_cost(i))
print(cost_list[-1])
    


Fixed code:
def cal_min_cost(cnt):
    return min([
      abs(hight_list[i] - hight_list[i-diff]) + cost_list[i-diff]
      for diff in range(1,3)
      ])

hight_list = []
cost_list = [0,0]
N = int(input())
hight_list = list(map(int, input().split()))
hight_list.insert(0,hight_list[0])
for i in range(2, N+1):
    cost_list.append(cal_min_cost(i))
print(cost_list[-1])
Buggy code:
n = int(input()
h = list(map(int,input().split()))

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])

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

Fixed code:
n = int(input())
h = list(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:
num = int(input())
List = input().split(" ")
height = [int(n) for n in List]
dp = [0 for n in range(10 ** 5 * 2)]
a = 0
while dp[num-1] == 0:
  a+= 1
  if a == 1:
    dp[a] = abs(height[a]-height[a-1])
  else:
    dp[a] = min(abs(height[a]-height[a-1])+dp[a-1],abs(height[a]-height[a-2])+dp[a-2])
print(dp[num-1])

Fixed code:
num = int(input())
List = input().split(" ")
height = [int(n) for n in List]
dp = [0 for n in range(10 ** 5 * 2)]
a = 0
while dp[num-1] == 0:
  a+= 1
  if a == num:
    break
  if a == 1:
    dp[a] = abs(height[a]-height[a-1])
  else:
    dp[a] = min(abs(height[a]-height[a-1])+dp[a-1],abs(height[a]-height[a-2])+dp[a-2])
print(dp[num-1])
Buggy code:
n = int(input())
h = list(map(int,input().split()))
dp=[]
dp.append(h[0])
dp.append(abs(h[1]-h[0]))
for i in range(2,n):
    dp.append(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=[]
dp.append(0)
dp.append(abs(h[1]-h[0]))
for i in range(2,n):
    dp.append(min(dp[i-2] + abs(h[i]-h[i-2]), dp[i-1] + abs(h[i]-h[i-1])))
print(dp[n-1])