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

res = 0

for i in range(1,n-2):
  if b[i] >= b[i+1]:
    res += b[i+1]
  else:
    res += b[i]
res += b[0]
res += b[n-2]
print(res)

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

res = 0
count = 0

for i in range(1,n-2):
  if b[i] >= b[i+1]:
    res += b[i+1]
    count += 1
  else:
    res += b[i]
    count += 1
    
res += b[0]
res += b[n-2]
count += 2

if count == n:
  print(res)
else:
  while count < n:
     if b[0] >= b[1]:
      res += b[1]
      count += 1
     else:
       res += b[0]
       count += 1
  print(res)
Buggy code:
n=int(input())
b=list(map(int,input().split()))
a[0]*n
for i in range(i):
  if i<=n-2:
    a[i] = min(b[i],b[i+1])
  else:
    a[i] = b[i-1]
print(sum(a))

Fixed code:
n = int(input())
b = list(map(int,input().split()))
a = [int() for i in range(n)]

for i in range(n-1):
    if i == 0:
        a[i] = b[i]
    if i == n-2:
        a[i+1] = b[i]
    else:
        a[i+1] = min(b[i],b[i+1])
print(sum(a))
Buggy code:
n=int(input())
b=list(map(int,input().split()))
a=[0]*(n+1)
for i in range(n+1):
  if i == 0:
    a[i] = b[i]
  elif i==n:
    a[i] = b[i-1]
  else:
    a[i] = min(b[i],b[i-1])
 
    
print(sum(a))


Fixed code:
n=int(input())
b=list(map(int,input().split()))
a=[0]*(n)
for i in range(n):
  if i == 0:
    a[i] = b[i]
  elif i==n-1:
    a[i] = b[i-1]
  else:
    a[i] = min(b[i],b[i-1])
 
    
print(sum(a))
Buggy code:
N = int(input())
B = list(map(int, input().split()))

A = [0] * N
B.append(0)


for i in range(N-1):
  A[i] = min(B[i-1],B[i])
  
A[N-1] = B[N-2]

print(sum(A))

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

A = [0] * N


for i in range(N-1):
  A[i] = min(B[i-1],B[i])

A[0] = B[0]
A[N-1] = B[N-2]


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

Fixed code:
n=int(input())
b=list(map(int, input().split()))
ans=b[0]+b[n-2]
for i in range(1,n-1):
    ans+=min(b[i-1],b[i])
print(ans)
Buggy code:
N = int(input())
B = map(int, input().split())
A = [B[0]]
for i in range(1, N-1):
    A.append(min(B[i], B[i-1]))
A.append(B[N-2])
print(sum(A))

Fixed code:
N = int(input())
B = list(map(int, input().split()))
A = [B[0]]
for i in range(1, N-1):
    A.append(min(B[i], B[i-1]))
A.append(B[N-2])
print(sum(A))
Buggy code:
# -*- coding: UTF-8 -*-

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

s = b[0]+b[-1]
p = 0


if n >= 2:
    for i in range(1,n-1):
        s += min(b[i],p)
        p = b[i]

print(s)


Fixed code:
# -*- coding: UTF-8 -*-

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

s = b[0]+b[-1]
p = b[0]


if n > 2:
    for i in range(1,n-1):
        s += min(b[i],p)
        p = b[i]

print(s)
Buggy code:
N = int(input())

B = [int(a) for a in input().split() ]

result = B[N-2]
old = B[N-2]
for i in range(N-3,-1,-1):
    print(min(B[i],old))
    result = result + min(B[i],old)
    old  = B[i]


result = result + B[0]

print(result)

Fixed code:
N = int(input())

B = [int(a) for a in input().split() ]

result = B[N-2]
old = B[N-2]
for i in range(N-3,-1,-1):
    #print(min(B[i],old))
    result = result + min(B[i],old)
    old  = B[i]


result = result + B[0]

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

Fixed code:
n = int(input())
b = list(map(int,input().split()))
a = [0] * n
a[-1] = b[-1]
a[0] = b[0]
for i in range(1, n - 1):
	a[i] = min(b[i],b[i-1])
print(sum(a))
Buggy code:
import sys
readline = sys.stdin.buffer.readline

N = int(readline())
B = list(map(int, readline().split()))

B.append(float('inf'))

mins = [min(B[0]]

for i in range(1, N):
    mins.append(min(B[i-1], B[i]))

print(sum(mins))

Fixed code:
import sys
readline = sys.stdin.buffer.readline

N = int(readline())
B = list(map(int, readline().split()))

B.append(float('inf'))

mins = [B[0]]

for i in range(1, N):
    mins.append(min(B[i-1], B[i]))

print(sum(mins))
Buggy code:
n = int(input())
b = list(map(int, input().split()))
a = [0]*n
a[0] = b[0]
if len(b) == 1:
    print(2*sum(b))
for i in range(1, n-1):
    if b[i] <= b[i - 1]:
        a[i] = b[i]
    else:
        a[i] = b[i - 1]
    a[i + 1] = b[i]
print(a)    

Fixed code:
n = int(input())
b = list(map(int, input().split()))
a = [0]*n
a[0] = b[0]
if len(b) == 1:
    print(2*sum(b))
else:
    for i in range(1, n-1):
        if b[i] <= b[i - 1]:
            a[i] = b[i]
        else:
            a[i] = b[i - 1]
        a[i + 1] = b[i]
    print(sum(a))
Buggy code:
n = int(input())
b = list(map(int, input().split()))

a = [b[0],b[-1]]

for i in range(n-1)[::-1]:
		
		a.append(min(b[i],b[i-1]))
		
print(sum(a))
		

Fixed code:
n = int(input())
b = list(map(int,input().split()))
a = [0] * n
a[0] = b[0]
a[-1] = b[-1]
for i in range(1,n-1):
    a[i] = min(b[i-1],b[i])
print(sum(a))
Buggy code:
N=int(input())
B=list(map(int,input().split()))
print(B)
A=[]
A.append(B[0])
A.append(B[N-2])

for i in range(N-2):
    m=min(B[i],B[i+1])
    A.append(m)
print(sum(A))

Fixed code:
N=int(input())
B=list(map(int,input().split()))
A=[]
A.append(B[0])
A.append(B[N-2])

for i in range(N-2):
    m=min(B[i],B[i+1])
    A.append(m)
print(sum(A))
Buggy code:
N = int(input())
B = list(map(int, input().split()))

# A_1 <= B_1
# A_2 <= min(B_1, B_2)
# A_3 <= min(B_2, B_3)
# A_(N-1) <= min(B_(N-2), B_(N-1))
# A_N <= B_(N-1)
# ans = B_1 + min(B_1, B_2) + ... + min(B__(N-2), B_(N-1)) + B_(N-1)

ans = 0
for i in range(N-1):
  if i == 0: ans += B[0]
  elif i == N-2: ans += B[N-2]
  else: ans += min(B[i-1], B[i])
    
print(ans)

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

# A_1 <= B_1
# A_2 <= min(B_1, B_2)
# A_3 <= min(B_2, B_3)
# A_(N-1) <= min(B_(N-2), B_(N-1))
# A_N <= B_(N-1)
# ans = B_1 + min(B_1, B_2) + ... + min(B__(N-2), B_(N-1)) + B_(N-1)
 
ans = 0
for i in range(N):
  if i == 0: ans += B[0]
  elif i == N-1: ans += B[N-2]
  else: ans += min(B[i-1], B[i])

print(ans)
Buggy code:
# -*- coding: utf-8 -*-
import sys
import copy
import collections
from bisect import bisect_left
from bisect import bisect_right
from collections import defaultdict
from heapq import heappop, heappush, heapify
import math
import itertools
import random
 
# NO, PAY-PAY
#import numpy as np
#import statistics
#from statistics import mean, median,variance,stdev
 
INF = float('inf')
def inputInt(): return int(input())
def inputMap(): return map(int, input().split())
def inputList(): return list(map(int, input().split()))
 
def main():
    N = inputInt()
    B = inputList()
    
    ans = 0
    for i,val in enumerate(B):
        ans += val
            
    ans += B[0]
    print(ans)
    
if __name__ == "__main__":
	main()


Fixed code:
# -*- coding: utf-8 -*-
import sys
import copy
import collections
from bisect import bisect_left
from bisect import bisect_right
from collections import defaultdict
from heapq import heappop, heappush, heapify
import math
import itertools
import random
 
# NO, PAY-PAY
#import numpy as np
#import statistics
#from statistics import mean, median,variance,stdev
 
INF = float('inf')
def inputInt(): return int(input())
def inputMap(): return map(int, input().split())
def inputList(): return list(map(int, input().split()))
 
def main():
    N = inputInt()
    B = inputList()
    
    ans = 0
    for i,val in enumerate(B):
        if i == len(B)-1:
            ans += val
        else:
            if val <= B[i+1]:
                ans += val
            else:
                ans += B[i+1]
            
    print(ans+B[0])
    
if __name__ == "__main__":
	main()
Buggy code:
n = int(input())
arrayB = list(map(int, input().split()))

arrayA = [arrayB[0]]

for k in range(0,n-2):

    if arrayB[k] < arrayB[k-1]:
        arrayA.append(arrayB[k])

    else:
        arrayA.append(arrayB[k-1])

arrayA.append(arrayB[n-2])

print(sum(arrayA))


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

arrayA = [arrayB[0]]

for k in range(1,n-1):

    if arrayB[k] < arrayB[k-1]:
        arrayA.append(arrayB[k])

    else:
        arrayA.append(arrayB[k-1])

arrayA.append(arrayB[n-2])

print(sum(arrayA))
Buggy code:
N=int(input())
A=[0]*N
B=list(map(int,input().split()))
A[0]=B[0]
A[N-1]=B[N-2]
for i in range(1,N-1):
  A[i]=min(B[i],B[i+1])
  
print(sum(A))

Fixed code:
N=int(input())
B=list(map(int,input().split()))
A=[0]*N
A[0]=B[0]
A[N-1]=B[N-2]
for i in range(1,N-1):
  A[i]=min(B[i-1],B[i])
  
print(sum(A))
Buggy code:
n = int(input())
b = list(map(int, input().split()))

a = [0]*n

if n == 2:
  print( 2* b[0])
  exit()

for i in range(1,n-1):
  a[i] = min(b[i-1], b[i])

a[0] = b[0]  
a[n-1] = b[n-2]
    
sum = 0
print("b is",b)
print("a is",a)
for i in range(n):
  sum += a[i]
  
print(sum)

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

a = [0]*n

if n == 2:
  print( 2* b[0])
  exit()

for i in range(1,n-1):
  a[i] = min(b[i-1], b[i])

a[0] = b[0]  
a[n-1] = b[n-2]
    
sum = 0

for i in range(n):
  sum += a[i]
  
print(sum)
Buggy code:
N = int(input())
B = list(map(int, input().split()))
A = [B[0]]

if N == 2:
    print(B*2)
else:
    for i in range(1,N-1):
        A.append(min(B[i-1],B[i]))
    A.append(B[i])
    print(sum(A))
        

Fixed code:
N = int(input())
B = list(map(int, input().split()))
A = [B[0]]

if N == 2:
    print(sum(B)*2)
else:
    for i in range(1,N-1):
        A.append(min(B[i-1],B[i]))
    A.append(B[i])
    print(sum(A))
Buggy code:
n = int(input())
b = map(int, input().split())
a = [b[0]]
for i in range(1, n - 1):
  a.append(min(b[i - 1], b[i]))
a.append(b[-1])
print(sum(a))

Fixed code:
n = int(input())
b = list(map(int, input().split()))
a = [b[0]]
for i in range(1, n - 1):
  a.append(min(b[i - 1], b[i]))
a.append(b[-1])
print(sum(a))
Buggy code:
N = int(input())

B = list(map(lambda x:int(x), input().split()))

ans = B[0]

for i in range(1, N-1):
  ans += min(B[i-1], B[i])

  
if len(B) != 1:
  ans += B[-2]
else:
  ans += B[0]
print(ans)

Fixed code:
N = int(input())

B = list(map(lambda x:int(x), input().split()))

ans = B[0]

for i in range(1, N-1):
  ans += min(B[i-1], B[i])

  
if len(B) != 1:
  ans += B[-1]
else:
  ans += B[0]
print(ans)
Buggy code:
n = int(input())
b = list(map(int, input().split()))
a = [0] * n

a[0] = b[0]
a[n-1] = b[n-2]
for i in range(1,n-2):
    if b[i-1] <= b[i] <= b[i+1]:
        a[i] = b[i-1]
        a[i+1] = b[i]
    elif b[i-1] >= b[i] >= b[i+1]:
        a[i] = b[i]
        a[i+1] = b[i+1]
    elif b[i-1] < b[i] > b[i+1]:
        a[i] = b[i-1]
        a[i+1] = b[i+1]
    else:
        a[i] = b[i]
        a[i+1] = b[i]

sum = 0
for i in range(n):
    sum += a[i]
print(sum)

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

a[0] = b[0]
if n >= 4:
    a[n-1] = b[n-2]
    for i in range(1,n-2):
        if b[i-1] <= b[i] <= b[i+1]:
            a[i] = b[i-1]
            a[i+1] = b[i]
        elif b[i-1] >= b[i] >= b[i+1]:
            a[i] = b[i]
            a[i+1] = b[i+1]
        elif b[i-1] < b[i] > b[i+1]:
            a[i] = b[i-1]
            a[i+1] = b[i+1]
        else:
            a[i] = b[i]
            a[i+1] = b[i]
elif n == 3:
    a[0] = b[0]
    a[1] = min(b[0], b[1])
    a[2] = b[1]
elif n == 2:
    a[0] = b[0]
    a[1] = b[0]

sum = 0
for i in range(n):
    sum += a[i]
print(sum)
Buggy code:
n = int(input())
B = list(map(int, input().split()))

asum = B[-1]
before_b = B[0]
for i in range(1, n-1):
    asum += min(B[i], before_b)
    before_b = B[i]

if n == 2:
    asum += B[-1]

print(asum)


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

asum = B[-1]
before_b = B[0]
for i in range(n-1):
    asum += min(B[i], before_b)
    before_b = B[i]

print(asum)
Buggy code:
N = int(input())
B = list(map(int,input.split()))
A = sum(B)*2
for i in range(N-1):
  if B[i] <= B[i+1]:
    A -= B[i+1]
  else:
    A -= B[i]
print(A)

Fixed code:
N = int(input())
B = list(map(int,input().split()))
A = sum(B)*2
for i in range(N-2):
  if B[i] <= B[i+1]:
    A -= B[i+1]
  else:
    A -= B[i]
print(A)
Buggy code:
N = int(input())
B = list(map(int,input().split()))

ans = B[0]
for i in range(N-2):
  ans += max([B[i],B[i+1]])

ans += B[N-2]

print(ans)


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

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

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

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

As = [copy.copy(Bs[0])]
As.extend(copy.copy(Bs))

#print(Bs)
#print(As)

for index, B in enumerate(Bs):
    print(Bs)
    print(As)
    if B < As[index]:
        As[index] = B

#print(As)
print(sum(As))



Fixed code:
import copy

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

As = [copy.copy(Bs[0])]
As.extend(copy.copy(Bs))

#print(Bs)
#print(As)

for index, B in enumerate(Bs):
#    print(Bs)
#    print(As)
    if B < As[index]:
        As[index] = B

#print(As)
print(sum(As))
Buggy code:
a=int(input())
li = list(map(int,input().split()))
li.reverse()
ans=0
ans+=li[0]
for i in range(len(li)-1):
	ans+=min(li[i],li[i+1])
print(ans)

Fixed code:
a=int(input())
li = list(map(int,input().split()))
li.reverse()
ans=0
ans+=li[0]
for i in range(len(li)-1):
	ans+=min(li[i],li[i+1])
ans+=li[len(li)-1]
print(ans)
Buggy code:
N = int(input())
B = list(map(int, input().split()))

ans = 0
for i in range(N):
	ans += min(A[i], A[i+1])

ans += A[N-1]

print(ans)

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

ans = B[0]

for i in range(N-2):
	ans += min([B[i], B[i+1]])

ans += B[N-2]

print(ans)
Buggy code:
n = int(input())
b=list(map(int, input().split())) 
  
sum =b[0]
for i in range(1,len(b)):
    if b[i-1]<b[i]:
        sum+=b[i-1]
    else:
        sum+=b[i]
        
sum+=b[i]
        
print(sum)

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

sum =b[0]

if len(b) >= 2:
    for i in range(1,len(b)):
        if b[i-1]<b[i]:
            sum+=b[i-1]
        else:
            sum+=b[i]
        
sum+=b[-1]
        
print(sum)
Buggy code:
n = int(input())
B = list(map(int, input().split()))
A = [B[0]]
for i in range(1,len(B)-1):
  A.append(min(B[i],B[i+1]))
A.append(B[n-2])

print(sum(A))

Fixed code:
n = int(input())
B = list(map(int, input().split()))
A = [B[0]]
for i in range(0,len(B)-1):
  A.append(min(B[i],B[i+1]))
A.append(B[n-2])

print(sum(A))
Buggy code:
N = int(input())
B = list(map(int, input().split()))
sum = 0
 
for i in range(1,N-1):
  sum += min(B[i], B[i-1])
  print(min(B[i], B[i-1]))
print(sum + B[N-2] + B[0])

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

C = [B[0]] + B + [B[N - 2]]
print(sum([min(C[i], C[i + 1]) for i in range(N)]))
Buggy code:
N = int(input())
B = list(map(int,input().split()))
ans = 0

for i in range(N):
    if i == 0:
        ans += B[i]
    elif i == N-1:
        ans += B[i-2]
    else:
        ans += max(B[i-1],B[i])
print(ans)


Fixed code:
N = int(input())
B = list(map(int,input().split()))
ans = 0

for i in range(N):
    if i == 0:
        ans += B[0]
    elif i == N-1:
        ans += B[-1]
    else:
        ans += min(B[i-1],B[i])
print(ans)
Buggy code:
n = int(input())
B = list(map(int,(input().split())))

list_A = [0]*n

list_A[0] = B[0]
list_A[n-1] = B[n-2]
for i in range(1,n-2):
    list_A[i] = min(B[i],B[i+1])

print(list_A)
print(sum(list_A))




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

list_A = [0]*n

list_A[0] = B[0]
list_A[n-1] = B[n-2]
for i in range(1,n-1):
    list_A[i] = min(B[i-1],B[i])

print(sum(list_A))
Buggy code:
N = int(input())
B = [int(i) for i in input().split()]

A = [0] * N

for i in range(1, N - 1):
    A[i] = min(B[i - 1], B[i])
A[N - 1] = B[N - 2]
print(sum(A))

Fixed code:
N = int(input())
B = list(map(int,input().split()))
A = [0] * N
A[0] = B[0]
A[-1] = B[-1]
for i in range(N-2,0,-1):
    A[i] = min(B[i-1],B[i])
print(sum(A))
Buggy code:
N = int(input())
B_list = list(map(int,input().split()))
A_list = [0 for i in range(N)]

A_list[0] = B_list[0]

for i in range(1,N-1):
    A_list[i] = min(B_list[i],B_list[i-1])

A_list[-1] = B_list[-1]
print(sum(A_list)

Fixed code:
N = int(input())
B_list = list(map(int,input().split()))
A_list = [0 for i in range(N)]

A_list[0] = B_list[0]

for i in range(1,N-1):
    A_list[i] = min(B_list[i],B_list[i-1])

A_list[-1] = B_list[-1]
print(sum(A_list))
Buggy code:
N = int(input())
B_list = list(map(int,input().split()))
A_list = [0 for i in range(N)]

sum_aaa =0

sum_aaa = B_list[0]

for i in range(N-1):
    sum_aaa += min(B_list[i],B_list[i-1])

sum_aaa += B_list[-1]
print(sum_aaa)


Fixed code:
N = int(input())
B_list = list(map(int,input().split()))
#A_list = [0 for i in range(N)]

sum_aaa = B_list[0]

for i in range(1,N-1):
    sum_aaa += min(B_list[i],B_list[i-1])

sum_aaa += B_list[-1]
print(sum_aaa)
Buggy code:
#Maximal Value

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

sum = B[0] + B[N-2]

for i in range(1,N):
     sum += min(B[i-2],B[i-1])
print (sum)


Fixed code:
#Maximal Value

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

sum = B[0]

for i in range(N-2):
    sum += min(B[i], B[i+1])

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


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

for i in range(1,n):
  a[i]=min(b[i-1],b[i])

print(sum(a))  
  

Fixed code:
n=int(input())
a=[0]*n
b=list(map(int,input().split()))
a[0]=b[0]
a[n-1]=b[n-2]
ans=0

for i in range(1,n-1):
  a[i]=min(b[i-1],b[i])

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

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

solution = [0]*n
for i in range(n):
    if i == 0:
        solution[i] = arr[i]
    elif i == n-1:
        solution[i] = arr[i-1]
    else:
        solution[i] = min(arr[i-1], arr[i])

print(solution)
print(sum(solution))

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

solution = [0]*n
for i in range(n):
    if i == 0:
        solution[i] = arr[i]
    elif i == n-1:
        solution[i] = arr[i-1]
    else:
        solution[i] = min(arr[i-1], arr[i])

print(sum(solution))
Buggy code:
N = int(input())
B = list(map(int, input().split()))

max_val = B[0] + B[-1]
for i in range(1, N - 2):
    max_val += min(B[i], B[i + 1])

print(max_val)


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

max_val = B[0] + B[-1]
for i in range(N - 2):
    max_val += min(B[i], B[i + 1])

print(max_val)
Buggy code:
n = int(input())
b = list(map(int,input().split()))
a = [0 for i in range(n)]
a[0] = b[0]
a[1] = b[0]
a[n-1] = b[n-2]
for i in range(1,n-1):
    a[i] = b[i-1]
    if a[i] > b[i]:
        a[i] = b[i]
print(a)
    

Fixed code:
n = int(input())
b = list(map(int,input().split()))
a = [0 for i in range(n)]
a[0] = b[0]
a[1] = b[0]
a[n-1] = b[n-2]
for i in range(1,n-1):
    a[i] = b[i-1]
    if a[i] > b[i]:
        a[i] = b[i]
print(sum(a))
Buggy code:

def main():
    n = int(input())
    b = list(map(int, input().split()))

    a = [0]*n

    for i,e in enumerate(b):
        if i == 0:
            a[0] = b[0]
        else:
            a[i] = min(b[i-1], b[i])

    a[-1] = b[-1]
            # if a[i] >= a[i+1] and e <= b[i-1]:
            #     a[i] = e
            # else:
            #     a[i+1] = e

    print(a)

if __name__ == '__main__':
    main()

Fixed code:

def main():
    n = int(input())
    b = list(map(int, input().split()))

    a = [0]*n

    for i,e in enumerate(b):
        if i == 0:
            a[0] = b[0]
        else:
            a[i] = min(b[i-1], b[i])

    a[-1] = b[-1]
            # if a[i] >= a[i+1] and e <= b[i-1]:
            #     a[i] = e
            # else:
            #     a[i+1] = e

    print(sum(a))

if __name__ == '__main__':
    main()
Buggy code:
n = int(input())
b = list(map(int, input().split()))
ans = b[0] + b[-1]
for i in range n-2:
    ans += min(b[i], b[i+1])
print(ans)


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

ans = arr[-1]
for i in range(N-2):
    ans += min(arr[i], arr[i+1])

print(ans)


Fixed code:
N = int(input())
arr = [int(item) for item in input().split()]

ans = arr[-1] + arr[0]
for i in range(N-2):
    ans += min(arr[i], arr[i+1])

print(ans)
Buggy code:
n=int(input())
l=list(map(int,input().split()))
l1=[0 for i in range(n)]
l1[0]=l[0]
l1[1]=l[1]
for i in range(1,n-2):
  if l[i]>l[i+1]:
    l1[i]=l[i+1]
  l1[i+1]=l[i+1]
sum=0
for i in l1:
  sum+=i
print(sum)

Fixed code:
n=int(input())
l=list(map(int,input().split()))
l1=[0 for i in range(n)]
l1[0]=l[0]
l1[1]=l[0]
for i in range(0,n-2):
  if l[i]>l[i+1]:
    l1[i+1]=l[i+1]
  l1[i+2]=l[i+1]
sum=0
for i in l1:
  sum+=i
print(sum)
Buggy code:
n = int(input())
b = list(map(int, input().split()))
a = b[0] + b[len(b) -1]
for i in range(1,len(b)):
    a += min(b[i-1], b[i])
    print(min(b[i-1], b[i]))
print(a)

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

a = b[0] + b[len(b) -1]
for i in range(1,len(b)):
    a += min(b[i-1], b[i])
print(a)
Buggy code:
N=int(input())
B=list(map(int,input().split()))
ans=0
ans+=B[0]+B[-1]
for i in range(N-1):
  ans+=min(B[i],B[i+1])
print(ans)

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

ans = B[0]+B[N-2]

for i in range(N-2):
    ans = ans + min(B[i],B[(i+1)])

print(ans)
Buggy code:
N = int(input())
B = list(map(int,input().split()))

ans = B[-1]
pre = B[-1]
for i in reversed(range(0,N-2)):
  now = B[i]
  if now <= pre:
    ans += now
  else:
    ans += pre  
  pre = now
print(ans)

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

ans = B[-1]
pre = B[-1]
for i in reversed(range(0,N-2)):
  
  now = B[i]
  if now <= pre:
    ans += now
  else:
    ans += pre
  pre = now
print(ans+B[0])
Buggy code:
n = int(input())
h = list(map(int, input().split()))
a = [-1 for _ in range(n)]
a[0] = h[0]
a[n-1] = h[n-2]
for i in range(n-2):
	a[i+1] = min(h[i-1], h[i])

print(sum(a))

Fixed code:
n = int(input())
h = list(map(int, input().split()))
a = [-1 for _ in range(n)]
a[0] = h[0]
a[n-1] = h[n-2]
for i in range(1,n-1):
	a[i] = min(h[i-1], h[i])

print(sum(a))
Buggy code:
from collections import deque
N = int(input())
B = deque(map(int, input().split()))
base = B.popleft()
ans = base
while B:
  tmp = B.popleft()
  ans += min(base, tmp)
  base = tmp
ans += tmp
print(ans)

Fixed code:
from collections import deque
N = int(input())
B = deque(map(int, input().split()))
base = B.popleft()
ans = base
while B:
  tmp = B.popleft()
  ans += min(base, tmp)
  base = tmp
ans += base
print(ans)
Buggy code:
n=int(input())
b=list(map(int,input().split()))
ans=0
if n==2:
  print(2*b[0])
else:
  for i in range(n-2):
    ans+=min(b[i],b[i+1])
  print(ans+b[n]+b[0])

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

Fixed code:
n=int(input())
b=list(map(int,input().split()))
k=b[n-2]
if n>2:
    for i in range(0,n-2):
        if b[n-i-3]<b[n-i-2]:
            k+=b[n-i-3]
        else:
            k+=b[n-i-2]
k+=b[0]
print(k)