qyliang/CodeNanoFix huggingface dataset:
Buggy code:
def resolve():
    s = input()

    n = len(s)
    left = s[0:(n-1)//2]
    right = s[(n+3)//2-1:n]

    def is_palindrome(s):
        for i in range(len(s)//2):
            if s[i] != s[-i-1]:
                return False
        return True

    flag = False
    flag = is_palindrome(left)
    flag = is_palindrome(right)
    flag = is_palindrome(s)

    print('Yes' if flag else 'No')
resolve()

Fixed code:
def resolve():
    s = input()

    n = len(s)
    left = s[:(n-1)//2]
    right = s[(n+3)//2-1:]

    def is_palindrome(s):
        for i in range(len(s)//2):
            if s[i] != s[-i-1]:
                return False
        return True

    if is_palindrome(left) and is_palindrome(right) and is_palindrome(s):
        print('Yes')
    else:
        print('No')
resolve()
Buggy code:
a=input()
#b=reversed(a)
c=a[0:int((len(a)-1)/2)]
b=''.join(list(reversed(a)))
#d=reversed(a[int((len(a)+3)/2)-1:])
d=''.join(list(reversed(a[int((len(a)+3)/2)-1:])))
print(a,b,c,d)

if a!=b:
  print("No")
elif c!=d:
  print("No")
else:
  print("Yes")

Fixed code:
a=input()
#b=reversed(a)
c=a[0:int((len(a)-1)/2)]
b=''.join(list(reversed(a)))
d=a[int((len(a)+3)/2)-1:]

if a!=b:
  print("No")
elif c!=d:
  print("No")
else:
  print("Yes")
Buggy code:
s = input()
l = len(s)
#print(s[:(l-1)//2])
#print(s[(l+3)//2-1:])
def pal(t):
    c = 1
    for i in range((len(t)-1)//2):
        if t[i] != t[-i-1]:
            c = 0
    return c

if pal(s) and pal(s[:(l-1)//2]) and pal(s[(l+3)//2-1:]):
    print("Yes")
else:
    print("No")


Fixed code:
s = input()
l = len(s)
#print(s[:(l-1)//2])
#print(s[(l+3)//2-1:])
def pal(t):
    c = 1
    for i in range((len(t)-1)//2):
        if t[i] != t[-i-1]:
            c = 0
    return c
"""
if pal(s) and pal(s[:(l-1)//2]) and pal(s[(l+3)//2-1:]):
    print("Yes")
else:
    print("No")

"""
if s[:(l-1)//2] == s[(l+3)//2-1:] and pal(s):
    print("Yes")
else:
    print("No")
Buggy code:
S=input()
n=len(S)
a=0
b=0
for i in range((n-1)/2):
	if S[i]!=S[n-i]:
    	a=1
        print("No")
        break;
p=""
q=""
if a==0:
	for i in range((n-1)/2):
		p.append(S[i])
    	q.append(S[i+1+(n-1)/2])
	for i in range((len(p)-1)/2):
  		if p[i]!=p[len(p)-i] or q[i]!=q[len(p)-i]:
        	b=1
            print("No")
            break;
if a==0 and b==0:
	print("Yes")


Fixed code:
S=input()
n=len(S)
a=0
b=0
for i in range(1,int(n/2)+1):
    if S[i-1]!=S[n-i]:
        a=1
        print("No")
        break;
p=[]
q=[]
if a==0:
    for i in range(1,int(n/2)+1):
        p.append(S[i-1])
        q.append(S[i+int(n/2)])
    #print(p,q)
    for i in range(1,int((len(p))/2)+1):
        #print(p[i-1],p[len(p)-i],q[i-1],q[len(p)-i])
        if p[i-1]!=p[len(p)-i] or q[i-1]!=q[len(p)-i]:
            b=1
            print("No")
            break;
if a==0 and b==0:
    print("Yes")
Buggy code:
def palindrome(word):
  if len(word) <= 1:
    return True
  if word[0] != word[-1]:
    return False
  return palindrome(word[1:-1])

word = input()
n = len(word) // 2
issuper = palindrome(word[:n]) and palindrome(word[n+1:])
print("Yes" if isupper else "No")

Fixed code:
def palindrome(word):
  if len(word) <= 1:
    return True
  if word[0] != word[-1]:
    return False
  return palindrome(word[1:-1])
 
word = input()
n = len(word) // 2
issuper = palindrome(word[:n]) and palindrome(word[n+1:]) and palindrome(word)
print("Yes" if issuper else "No")
Buggy code:
def palind(LIST, N):
    for i in range(N):
        if LIST[i] != LIST[-1-i]:
            return False
    return True

S = list(input())
n = len(S)
print(S)
flag = palind(S, n)

front = S[:((n+1)//2-1)]
rear = S[((n+3)//2-1):]
n = len(front)
flag = palind(front, n)
flag = palind(rear, n)

if flag == True:
    print('Yes')
else:
    print('No')

Fixed code:
def palind(LIST, N):
    for i in range(N):
        if LIST[i] != LIST[-1-i]:
            return False
    return True

S = list(input())
n = len(S)
flag = palind(S, n)

front = S[:((n+1)//2-1)]
rear = S[((n+3)//2-1):]
n = len(front)
flag = flag and palind(front, n) and palind(rear, n)

if flag == True:
    print('Yes')
else:
    print('No')
Buggy code:
s = input()
n = len(s)
num = int((n-1)/2)-1
for i in range(num):
  if s[i] != s[n-1-i]:
    print("No")
    exit()
    
num = int(num /2 -1)
for i in range(num):
  if s[i] != s[n-1-i]:
    print("No")
    exit()

num = len(s) * 0.5 - 1.5
index = int((n + 3) /2 )
for i in range(num):
  if s[index+i] != s[n-1-i]:
    print("No")
    exit()
   
  
print("Yes")

    

    

Fixed code:
s = input()
n = len(s)
num = int((n-1)/2)-1
for i in range(num):
  if s[i] != s[n-1-i]:
    print("No")
    exit()
    
num = int(num /2 -1)
for i in range(num):
  if s[i] != s[n-1-i]:
    print("No")
    exit()

num = int(len(s) * 0.5 - 1.5)
index = int((n + 3) /2 -1 )
for i in range(num):
  if s[index+i] != s[n-1-i]:
    print("No")
    exit()
   
  
print("Yes")
Buggy code:
s=input()
n=len(s)
m=(n-1)//2
t=s[:m]

for i in range(m):
  #print(s[i],s[-i-1])
  if s[i]!=s[-i-1]:
    print('No')
    exit()

l=(m-1)//2
for i in range(l):
  #print(t[i],t[-i-1])
  if t[i]!=t[-i-1]:
    print('No')
    exit()
print('Yes')

Fixed code:
s=input()
n=len(s)
m=(n-1)//2
t=s[:m]

for i in range(m):
  #print(s[i],s[-i-1])
  if s[i]!=s[-i-1]:
    print('No')
    exit()
if m%2==1: l=(m-1)//2
else: l=m//2
for i in range(l):
  #print(t[i],t[-i-1])
  if t[i]!=t[-i-1]:
    print('No')
    exit()
print('Yes')
Buggy code:
s=input()
flag=True
n=len(s)
if s!=s.reversed():
    flag=False
if s[:(n-1)/2]!=s[:(n-1)/2].reversed():
    flag=False
if s[(n+3)/2-1:]!=s[(n+3)/2-1:].reversed():
    flag=False
print("Yes" if flag else "No")



Fixed code:

s=input()
flag=True
n=len(s)
if s!=s[::-1]:
    flag=False
if s[:(n-1)//2]!="".join(list(reversed(s[:(n-1)//2]))):
    flag=False
if s[(n+3)//2-1:]!="".join(list(reversed(s[(n+3)//2-1:]))):
    flag=False
print("Yes" if flag else "No")
Buggy code:
# -*- coding: utf-8 -*-

'''
akasaka
'''

import sys

S = input()

for i in range(len(S)):
    if not S[i] == S[len(S)-1 - i]:
        print('No')
        sys.exit()

    if i < (len(S)-1)/2:
        if not S[i] == S[int((len(S)-1)/2) -1 - i]:
            print('No')
            sys.exit()

# print(list(S))
# print(len(S))
# print(int((len(S)+3)/2)-1)
newS = list(S)[int((len(S)+3)/2 -1):]
print(newS)

for i in range(len(newS)):
    if not S[i] == S[len(S) - 1 - i]:
        print('No')
        sys.exit()

print('Yes')






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

'''
akasaka

'''

import sys

S = input()

for i in range(len(S)):
    # print(i, len(S)-1 - i)
    if not S[i] == S[len(S)-1 - i]:
        print('No')
        sys.exit()


newS = list(S)[:int((len(S)-1)/2)]
for i in range(len(newS)):
    if not newS[i] == newS[len(newS) - 1 - i]:
        print('No')
        sys.exit()

newS = list(S)[int((len(S)+3)/2 - 1):]
for i in range(len(newS)):
    if not newS[i] == newS[len(newS) - 1 - i]:
        print('No')
        sys.exit()

print('Yes')
Buggy code:
s = list(input())
n = len(s)
flag = 1
c = int((n - 1) / 2)

for i in range(c):
    if s[i] != s[n - 1 - i]:
        flag = 0
        break

if flag:
    c2 = int(c / 2)
    for i in range(c2):
        if s[i] != s[c2 - 1 - i]:
            flag = 0
            break

if flag:
    print('Yes')
else :
    print('No')

Fixed code:
s = list(input())
n = len(s)
flag = 1
c = int((n - 1) / 2)

for i in range(c):
    if s[i] != s[n - 1 - i]:
        flag = 0
        break

if flag:
    c2 = int(c / 2)
    for i in range(c2):
        if s[i] != s[c - 1 - i]:
            flag = 0
            break

if flag:
    print('Yes')
else :
    print('No')
Buggy code:
def solve(s):
  s = list(s)
  n = len(s)
  ans = check_palindrome(s) & check_palindrome(s[0:int(((n-1)//2))]) & check_palindrome(s[0:int(((n+3)//2))])
  return "Yes" if ans else "No"


def check_palindrome(st):
  a = list(st)
  b = list(reversed(st))
  return a == b




s = str(input())
# n, m = [int(s) for s in input().split(" ")]
print(solve(s))


Fixed code:
def solve(s):
  s = list(s)
  n = len(s)
  ans = check_palindrome(s) & check_palindrome(s[:int(((n-1)//2))]) & check_palindrome(s[int(((n+3)//2)-1):])
  return "Yes" if ans else "No"


def check_palindrome(st):
  a = list(st)
  b = list(reversed(st))
  return a == b




s = str(input())
# n, m = [int(s) for s in input().split(" ")]
print(solve(s))
Buggy code:
S = list(input())
N = len(S)
print((N-1)/2)
if S[:int((N-1)/2)] == list(reversed(S[:int((N-1)/2)])) and S[int((N+1)/2):] == list(reversed(S[int((N+1)/2):])):
    print('Yes')
else:
    print('No')

Fixed code:
S = list(input())
N = len(S)
if S[:int((N-1)/2)] == list(reversed(S[:int((N-1)/2)]))\
    and S[int((N+1)/2):] == list(reversed(S[int((N+1)/2):]))\
    and S == list(reversed(S)):

    print('Yes')
else:
    print('No')
Buggy code:
def kai(s):
  n = len(s)
  for i in range(n):
    if s[i]!=s[n-i-1]:
      return False
  else:
    return True
  
s = input()
n = len(s)
if kai(s) and kai(s[:(n-1)//2]) and kai(s[(n+3)//2:]):
  print('Yes')
else:
  print('No')


Fixed code:
def kai(s):
  n = len(s)
  for i in range(n):
    if s[i]!=s[n-i-1]:
      return False
  else:
    return True
  
s = input()
n = len(s)
if kai(s) and kai(s[:(n-1)//2]) and kai(s[(n+1)//2]):
  print('Yes')
else:
  print('No')
Buggy code:
S = input()
N = len(S)
flag1 = (S == S[::-1])
flag2 = (S[0:(N - 3)//2])
if flag1 and flag2:
    print("Yes")
else:
    print("No")


Fixed code:
S = input()
N = len(S)
flag1 = (S == S[::-1])
s = S[0:(N - 1)//2]
flag2 = (s == s[::-1])
if flag1 and flag2:
    print("Yes")
else:
    print("No")
Buggy code:
n = input()
print(n[::-1])
if n == n[::-1]:
    zenhan = n[0:int(len(n)//2)]
    if zenhan == zenhan[::-1]:
        kouhan = n[int(len(n)//2)+1::]

        if kouhan == kouhan[::-1]:
            print('Yes')
            exit()

print('No')


Fixed code:
n = input()
if n == n[::-1]:
    zenhan = n[0:int(len(n)//2)]
    if zenhan == zenhan[::-1]:
        kouhan = n[int(len(n)//2)+1::]

        if kouhan == kouhan[::-1]:
            print('Yes')
            exit()

print('No')
Buggy code:
S = input()
N = len(S)
SF_num = int((N-1)/2)
SF = S[:SF_num]
SF_rev = SF[::-1]
SB_num = int((N+3)/2)
SB = S[SB_num-1:]
SB_rev = SB[::-1]

if SF == SB_rev:
    if SF == SF_rev:
        if SB == SB_rev:
            print("Yes")
else:
    print("No")

Fixed code:
S = input()
N = len(S)
SF_num = int((N-1)/2)
SF = S[:SF_num]
SF_rev = SF[::-1]
SB_num = int((N+3)/2)
SB = S[SB_num-1:]
SB_rev = SB[::-1]

if SF == SB_rev and SF == SF_rev and SB == SB_rev:
    print("Yes")
else:
    print("No")
Buggy code:
def ispalindrome(str): return 1 if str == str[::-1] else 0
S = input()
N = len(S)

i1 = int((N-1)/2)
i2 = int((N+3)/2)-1
strong = True
print(S[:i1], S[i2:])
if not ispalindrome(S):
  strong = False
if not ispalindrome(S[:i1]):
  strong = False
if not ispalindrome(S[i2:]):
  strong = False

if strong:
  print('Yes')
else:
  print('No')
    

Fixed code:
def ispalindrome(str): return 1 if str == str[::-1] else 0
S = input()
N = len(S)

i1 = int((N-1)/2)
i2 = int((N+3)/2)-1
strong = True
if not ispalindrome(S):
  strong = False
if not ispalindrome(S[:i1]):
  strong = False
if not ispalindrome(S[i2:]):
  strong = False

if strong:
  print('Yes')
else:
  print('No')
Buggy code:
s = input()
n = len(s)
t = s[:(n - 1) // 2]
u = s[(n + 3) // 2 - 1:]
print(t, u)
if s == s[::-1] and t == t[::-1] and u == u[::-1]:
    print('Yes')
else:
    print('No')


Fixed code:
s = input()
n = len(s)
t = s[:(n - 1) // 2]
u = s[(n + 3) // 2 - 1:]
if s == s[::-1] and t == t[::-1] and u == u[::-1]:
    print('Yes')
else:
    print('No')
Buggy code:
s= str(input())
ans= "Yes"
if s != s[::-1]:
    ans = "No"
    exit()
else:
    s1 = s[:len(s)//2]
    s2 = s[len(s)//2+1:]
    if (s1!=s2):
        ans = "No"
    else:
        ans= "Yes"
print(ans)


Fixed code:
s= str(input())
if s != s[::-1]:
    print("No")
    exit()
else:
    s1 = s[:len(s)//2]
    s2 = s[len(s)//2+1:]
    if (s1!=s2):
        print("No")
    else:
        print("Yes")
Buggy code:
S = input()

#initialize
IsKaibun = 0

N = len(S)

def check_kaibun( mojiretu ):
    names = len(mojiretu)
    for name in range((names + 1) // 2):
        if mojiretu[name] != mojiretu[names - 1 - name]:
            IsKaibun = 0
            break
    IsKaibun = 1
    return IsKaibun

#pre check
if N%2 != 1 and N < 3 and N >  99 :
    PRE_CHECK = 1

#1st check
check_kaibun(S)
#print(IsKaibun)

#2nd check
#print(S[ 0 : int((N-1)/2) ])
check_kaibun(S[ 0 : int((N-1)/2) ])
#print(IsKaibun)

#3rd check
check_kaibun(S[ int((N+3)/2) : N ])

#output
print(IsKaibun)


Fixed code:
S = input()

#initialize
IsKaibun = 'No'

N = len(S)

def check_kaibun( mojiretu ):
    names = len(mojiretu)
    IsKaibunLocal = 'Yes'
    for name in range((names + 1) // 2):
        if mojiretu[name] != mojiretu[names - 1 - name]:
            IsKaibunLocal = 'No'

    return IsKaibunLocal

#pre check
if N%2 != 1 and N < 3 and N >  99 :
    PRE_CHECK = 1

#1st check
IsKaibun = check_kaibun(S)

#2nd check
if IsKaibun == 'Yes':
    IsKaibun =  check_kaibun(S[ 0 : int((N-1)/2) ])

#3rd check
if IsKaibun == 'Yes':
    IsKaibun = check_kaibun(S[ int((N+3)/2 - 1) : N ])

#output
print(IsKaibun)
Buggy code:
s = list(map(str, input()))
n = len(s)
res = True
for i in range(n//2):
    print("?")
    if (s[i] != s[n-1-i]):
        res = False
        break
i = 0
while res and i < n//4:
    print("!")
    if (s[i] != s[(n-1)//2-1-i]):
        res = False
        break
    i += 1
print("Yes" if res else "No")

Fixed code:
s = list(map(str, input()))
n = len(s)
res = True
for i in range(n//2):
    if (s[i] != s[n-1-i]):
        res = False
        break
i = 0
while res and i < n//4:
    if (s[i] != s[(n-1)//2-1-i]):
        res = False
        break
    i += 1
print("Yes" if res else "No")
Buggy code:
text_ = input()

if text_ != text_[::-1]:
    print('No')
elif text_[:((len(text_) - 1)//2)] != text_[:((len(text_) - 1)//2)][::-1]:
    print('No')
elif text_[:((len(text_) + 3) // 2)] != text_[:((len(text_) + 3) // 2)][::-1]:
    print('No')
else:
    print('Yes')

Fixed code:
text_ = input()

if text_ != text_[::-1]:
    print('No')
elif text_[:((len(text_)-1) // 2)] != text_[:((len(text_)-1) // 2)][::-1]:
    print('No')
elif text_[((len(text_)+3)//2)-1:] != text_[((len(text_)+3)//2)-1:][::-1]:
    print('No')
else:
    print('Yes')
Buggy code:
def palindrome(s):
    return s == s[::-1]

def judge(s):
    return palindrome(s) and palindrome(s[0:len(s)-1//2]) and palindrome(s[len(s)-1//2:])

S = input()
print('Yes' if judge(S) else 'No')


Fixed code:
def palindrome(s):
    return s == s[::-1]


def judge(s):
    return palindrome(s) and palindrome(s[0:(len(s)-1)//2]) and palindrome(s[(len(s)-1)//2+1:])


S = input()
print('Yes' if judge(S) else 'No')
Buggy code:
s = input()
n = len(s)
flag = True
for i in range(n):
    if s[i] != s[n - i - 1]:
        flag = False

for i in range((n - 1) // 2):
    print(s[(n - 1) // 2 - i])
    if s[i] != s[(n - 1) // 2 - i - 1]:
        flag = False

for i in range((n + 3) // 2, n):
    if s[i] != s[n - i - 1]:
        flag = False
if flag:
    print("Yes")
else:
    print("No")


Fixed code:
s = input()
n = len(s)
flag = True
for i in range(n):
    if s[i] != s[n - i - 1]:
        flag = False

for i in range((n - 1) // 2):
    if s[i] != s[(n - 1) // 2 - i - 1]:
        flag = False

for i in range((n + 3) // 2, n):
    if s[i] != s[n - i - 1]:
        flag = False
if flag:
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
ls = list(s)
print((len(ls)-1)/2 - 1)
ls1 = ls[:int((len(ls)-1)/2)]
ls2 = ls[int((len(ls)+3)/2) - 1:]
def kt(l):
    lr = list(reversed(l))
    if l == lr:
        return 1
    else:
        return 0
a = kt(ls)
b = kt(ls1)
c = kt(ls2)


d = a + b + c

if d >= 3:
    print('Yes')
else:
    print('No')


Fixed code:
s = input()
ls = list(s)
ls1 = ls[:int((len(ls)-1)/2)]
ls2 = ls[int((len(ls)+3)/2) - 1:]
def kt(l):
    lr = list(reversed(l))
    if l == lr:
        return 1
    else:
        return 0
a = kt(ls)
b = kt(ls1)
c = kt(ls2)


d = a + b + c

if d >= 3:
    print('Yes')
else:
    print('No')
Buggy code:
"""
"""


def int_as_array(num): return list(map(int, [y for y in str(num)]))


def array_as_int(arr): return int(''.join(map(str, arr)))


def read_int(): return int(input())


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


def array_to_string(arr, sep=' '): return sep.join(map(str, arr))


def matrix_to_string(arr, sep=' '): return '[\n' + '\n'.join(
    [sep.join(map(str, row)) for row in arr]) + '\n]'


def solve(string):
    if string != string[::-1]:
        return False
    first = string[0:(len(string) - 1) // 2]
    if first != first[::-1]:
        return False
    second = string[0:(len(string) + 3) // 2]
    if second != second[::-1]:
        return False
    return True


string = input()
if solve(string):
    print('Yes')
else:
    print('No')


Fixed code:
"""
"""


def int_as_array(num): return list(map(int, [y for y in str(num)]))


def array_as_int(arr): return int(''.join(map(str, arr)))


def read_int(): return int(input())


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


def array_to_string(arr, sep=' '): return sep.join(map(str, arr))


def matrix_to_string(arr, sep=' '): return '[\n' + '\n'.join(
    [sep.join(map(str, row)) for row in arr]) + '\n]'


def solve(string):
    if string != string[::-1]:
        return False
    first = string[0:(len(string) - 1) // 2]
    if first != first[::-1]:
        return False
    second = string[(len(string) + 2) // 2:]
    if second != second[::-1]:
        return False
    return True


string = input()
if solve(string):
    print('Yes')
else:
    print('No')
Buggy code:
S = input()
N = len(S)

flag = True

for i in range(int(len(S)/2)):
  if S[i]!=S[-1-i]:
    flag = False
    breakat

if flag==True:
  right = int((N-1) / 2)
  subS = S[0:right]
  for i in range(int(len(subS)/2)):
    if subS[i]!=subS[-1-i]:
      flag = False
      break

if flag==True:
  left = int((N+3) / 2)
  subS = S[left-1:N]
  for i in range(int(len(subS)/2)):
    if subS[i]!=subS[-1-i]:
      flag = False

if flag:
  print("Yes")
else:
  print("No")



Fixed code:
S = input()
N = len(S)

flag = True

for i in range(int(len(S)/2)):
  if S[i]!=S[-1-i]:
    flag = False
    break

if flag==True:
  right = int((N-1) / 2)
  subS = S[0:right]
  for i in range(int(len(subS)/2)):
    if subS[i]!=subS[-1-i]:
      flag = False
      break

if flag==True:
  left = int((N+3) / 2)
  subS = S[left-1:N]
  for i in range(int(len(subS)/2)):
    if subS[i]!=subS[-1-i]:
      flag = False
      break

if flag:
  print("Yes")
else:
  print("No")
Buggy code:
#B
def isReverse(s):
    p1 = 0
    p2 = len(s) - 1
    flag = True
    while p1 == p2:
        if s[p1] != s[p2]:
            flag = False
    return flag
if __name__ == "__main__":
    s = input()
    s1 = s[:int((len(s) - 1) / 2)]
    s2 = s[int((len(s) + 1) / 2):]
    if isReverse(s) and isReverse(s1) and isReverse(s2):
        print("Yes")
    else:
        print("No")

Fixed code:
def isReverse(s):
    p1 = 0
    p2 = len(s) - 1
    flag = True
    while p1 <= p2:
        if s[p1] != s[p2]:
            flag = False
        p1 += 1
        p2 += -1
    return flag
if __name__ == "__main__":
    s = input()
    s1 = s[:int((len(s) - 1) / 2)]
    s2 = s[int((len(s) + 1) / 2):]
    # print(s, s1, s2)
    # print(isReverse(s), isReverse(s1), isReverse(s2))
    if isReverse(s) and isReverse(s1) and isReverse(s2):
        print("Yes")
    else:
        print("No")
Buggy code:
def main():
    import sys
    #input = sys.stdin.readline
    s = input()
    n = len(s)
    s_l = s[:int((n-1)/2)]
    s_r = s[int((n+1)/2):]
    print(s_l,s_r)
    if s == s[::-1] and s_l == s_l[::-1] and s_r == s_r[::-1]:
        print('Yes')
    else:
        print('No')


if __name__ == '__main__':
    main()

Fixed code:
def main():
    import sys
    #input = sys.stdin.readline
    s = input()
    n = len(s)
    s_l = s[:int((n-1)/2)]
    s_r = s[int((n+1)/2):]
    if s == s[::-1] and s_l == s_l[::-1] and s_r == s_r[::-1]:
        print('Yes')
    else:
        print('No')


if __name__ == '__main__':
    main()
Buggy code:
s=str(input())
def isPalin(l,r):
  if l >= r:
    return True
  if s[l]!=s[r]:
    return False:
  return isPalin(l+1,r-1)
n = len(s)
if isPalin(0,n-1) and isPalin(0,n//2-1) and isPalin(n//2+1,n-1):
  print('Yes')
else:
  print('No')

Fixed code:
s=str(input())
def isPalin(l,r):
  if l >= r:
    return True
  if s[l]!=s[r]:
    return False
  return isPalin(l+1,r-1)
n = len(s)
if isPalin(0,n-1) and isPalin(0,n//2-1) and isPalin(n//2+1,n-1):
  print('Yes')
else:
  print('No')
Buggy code:
s = input()
s_h = s[:(len(s)-1)//2]
print(s_h)
s_h_b = s[(len(s)+3)//2-1:]
print(s_h_b)

if s==s[::-1] and s_h==s_h[::-1] and s_h_b == s_h_b[::-1]:
    print("Yes")
else:
    print("No")

Fixed code:
s = input()
s_h = s[:(len(s)-1)//2]
s_h_b = s[(len(s)+3)//2-1:]

if s==s[::-1] and s_h==s_h[::-1] and s_h_b == s_h_b[::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
sente=input()
n=len(sente)
nt=int((n-1)/2)
nb=int((n+3)/2)
#print(nt,nb)
#print(sente[nb:n])
if sente == sente[::-1]:
    if sente[0:nt] == sente[0:nt][::-1]:
        #print(sente[0:nt])
       
        if sente[nb-1:n]==sente[nb-1:n][::-1]:
            #print(sente[nb-1:n])

            print('Yes')
    else:
        print('No')
        else:
            print('No')
else:
    print('No')

Fixed code:
sente=input()
n=len(sente)
nt=int((n-1)/2)
nb=int((n+3)/2)
#print(nt,nb)
#print(sente[nb:n])
if sente == sente[::-1]:
    if sente[0:nt] == sente[0:nt][::-1]:
        #print(sente[0:nt])
       
        if sente[nb-1:n]==sente[nb-1:n][::-1]:
            #print(sente[nb-1:n])

            print('Yes')
        else:
            print('No')
            
    else:
        print('No')
        
else:
    print('No')
Buggy code:
input_str = input().strip()

def main():
  N = len(input_str)
  input_str_part1 = input_str[:int((N-1)/2)]
  input_str_part2 = input_str[int((N+3)/2)-1:]
  flag0 = input_str == input_str[::-1]
  flag1 = input_str_part1 == input_str_part1[::-1]
  flag2 = input_str_part2 == input_str_part2[::-1]
  if flag0 * flag1 * flag2:
    print("Yes")
  else:
	print("No")
  return

if __name__ == "__main__":
  main()

Fixed code:
input_str = input().strip()

def main():
  N = len(input_str)
  input_str_part1 = input_str[:int((N-1)/2)]
  input_str_part2 = input_str[int((N+3)/2)-1:]
  flag0 = input_str == input_str[::-1]
  flag1 = input_str_part1 == input_str_part1[::-1]
  flag2 = input_str_part2 == input_str_part2[::-1]
  if flag0 * flag1 * flag2:
    print("Yes")
  else:
      print("No")
  return

if __name__ == "__main__":
  main()
Buggy code:
import sys
sys.setrecursionlimit(4100000)
import math
INF = 10**9


def check_palindrome(w):
    for i in range(len(w)//2):
        print(w[i], w[-i-1])
        if w[i] != w[-i-1]:
            return False
    return True

def main():
    S = input()

    n = len(S)//2
    is_palindrome1 = check_palindrome(S)
    is_palindrome2 = check_palindrome(S[:n])
    is_palindrome3 = check_palindrome(S[n+1:])
    if is_palindrome1 and is_palindrome2 and is_palindrome3:
        print('Yes')
    else:
        print('No')


if __name__ == '__main__':
    main()


Fixed code:
import sys
sys.setrecursionlimit(4100000)
import math
INF = 10**9


def check_palindrome(w):
    for i in range(len(w)//2):
        if w[i] != w[-i-1]:
            return False
    return True

def main():
    S = input()

    n = len(S)//2
    is_palindrome1 = check_palindrome(S)
    is_palindrome2 = check_palindrome(S[:n])
    is_palindrome3 = check_palindrome(S[n+1:])
    if is_palindrome1 and is_palindrome2 and is_palindrome3:
        print('Yes')
    else:
        print('No')


if __name__ == '__main__':
    main()
Buggy code:
S = input()
N = len(S)
r = (N-1)//2
u = (N+3)//2
if S==S[::-1] and S[:r]==S[r-1::-1] and S[u-1:]==S[:u:-1]:
    print('Yes')
else:
    print('No')

Fixed code:
S = input()
N = len(S)
r = (N-1)//2
u = (N+3)//2
if S==S[::-1] and S[:r]==S[:r][::-1] and S[u-1:]==S[u-1:][::-1]:
    print('Yes')
else:
    print('No')