qyliang/CodeNanoFix huggingface dataset:
Buggy code:
def parindrome(s):
    print(s)
    if s[::] == s[::-1]:
        return True
    return False

def string_parindrome(s):
    if parindrome(s):
        N = len(s)
        if parindrome(s[:((N-1)//2):]) and parindrome(s[((N+3)//2)-1::]):
            return "Yes"
    return "No"
    

S = input()
print(string_parindrome(S))


Fixed code:
def parindrome(s):
    if s[::] == s[::-1]:
        return True
    return False

def string_parindrome(s):
    if parindrome(s):
        N = len(s)
        if parindrome(s[:((N-1)//2):]) and parindrome(s[((N+3)//2)-1::]):
            return "Yes"
    return "No"
    

S = input()
print(string_parindrome(S))
Buggy code:
import sys
S = input()
def is_palindrome(S):
  P = S[::-1]
  print(P)
  if S == P:
    return True
  return False
if is_palindrome(S):
  N = len(S)
  if is_palindrome(S[0:(N-1)//2]) and is_palindrome(S[(N+3)//2-1:N]):
    print('Yes')
    sys.exit(0)
print('No')

Fixed code:
import sys
S = input()
def is_palindrome(S):
  P = S[::-1]
  if S == P:
    return True
  return False
if is_palindrome(S):
  N = len(S)
  if is_palindrome(S[0:(N-1)//2]) and is_palindrome(S[(N+3)//2-1:N]):
    print('Yes')
    sys.exit(0)
print('No')
Buggy code:
s = input()

n = len(s)
a = (n - 1) // 2
b = (n + 3) // 2

s_reverse = s[::-1]

s_first = s[:a]
s_first_reverse = s_first[::-1]

s_second = s[b-1:]
s_second_reverse = s_second[::-1]

if s == s_reverse and s_first = s_first_reverse and s_second = s_second_reverse:
  print('Yes')
else:
  print('No')

Fixed code:
s = input()

n = len(s)
a = (n - 1) // 2
b = (n + 3) // 2

s_reverse = s[::-1]

s_first = s[:a]
s_first_reverse = s_first[::-1]

s_second = s[b-1:]
s_second_reverse = s_second[::-1]

if s == s_reverse and s_first == s_first_reverse and s_second == s_second_reverse:
  print('Yes')
else:
  print('No')
Buggy code:
#! env/bin/local python3
# -*- coding:utf-8 -*-

s = input()
ls = len(s)


def is_kaibun(s):
    rs = s[::-1]
    n = len(s)
    if s[:(n - 1) // 2] == rs[:(n - 1) // 2]:
        return True
    else:
        return False


flag = False
if is_kaibun(s):
    if is_kaibun(s[:(ls-1)//2]):
        if is_kaibun(s[(ls+3)//2: ls]):
            flag = True

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




Fixed code:
#! env/bin/local python3
# -*- coding:utf-8 -*-

s = input()
ls = len(s)


def is_kaibun(s):
    rs = s[::-1]
    if s == rs:
        return True
    else:
        return False


flag = False
if is_kaibun(s):
    if is_kaibun(s[:(ls-1)//2]):
        if is_kaibun(s[(ls+3)//2-1: ls]):
            flag = True

print('Yes' if flag else 'No')
Buggy code:
s = list(input())
n = (len(s)+1)//2
m = n//2
  if s[:n-1] == s[len(s):n-1:-1] and s[:m-1] == s[n-2:m-1:-1]:
    print("Yes")
  else:
    print("No")

Fixed code:
s = list(input())
n = (len(s)+1)//2
if s[:n-1] == s[len(s):n-1:-1] == s[n-2::-1]:
  print("Yes")
else:
  print("No")
Buggy code:
S=input()
a=S[:int((len(S)-1)/2)]
b=S[int((len(S)+3)/2)-1:]
c=''.join(list(reversed(a)))
d=''.join(list(reversed(b)))

print(a,b,c,d)
if a==c and b==d:
	print('Yes')
else:
	print('No')

Fixed code:
S=input()
s=''.join(list(reversed(S)))
a=S[:int((len(S)-1)/2)]
b=S[int((len(S)+3)/2)-1:]
c=''.join(list(reversed(a)))
d=''.join(list(reversed(b)))
if S==s and a==c and b==d:
	print('Yes')
else:
	print('No')
Buggy code:
S=str(input())

N=len(S)
i=0
r="No"

s=int((N-1)/2)
t=int((N+3)/2)

a=S[0:s]
b=S[t-1:N]

print(a)
print(b)

if(N==3 and S==S[::-1]):
  print("Yes")
elif(S==S[::-1] and a==(a[::-1]) and b==(b[::-1])):
  print("Yes")
else:
  print("No")

Fixed code:
S=str(input())

N=len(S)
i=0
r="No"

s=int((N-1)/2)
t=int((N+3)/2)

a=S[0:s]
b=S[t-1:N]

if(N==3 and S==S[::-1]):
  print("Yes")
elif(S==S[::-1] and a==(a[::-1]) and b==(b[::-1])):
  print("Yes")
else:
  print("No")
Buggy code:
def check_kaibun(s):
    center_idx = len(s) // 2
    if s[:center_idx] == s[center_idx + 1 :][::-1]:
        return True
    else:
        return False


S = input()
idx = len(S) // 2
print(S, S[:idx], S[idx + 1 :])
if check_kaibun(S) and check_kaibun(S[:idx]) and check_kaibun(S[idx + 1 :]):
    print("Yes")
else:
    print("No")

Fixed code:
def check_kaibun(s):
    if s == s[::-1]:
        return True
    else:
        return False


S = input()
idx = len(S) // 2
if check_kaibun(S) and check_kaibun(S[:idx]) and check_kaibun(S[idx + 1 :]):
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
t = s[:int((len(s)-1)/2)]
u = s[(int(len(s)+3)/2-1):]
if s == s[::-1] and t == t[::-1] and u == u[::-1]:
  print("Yes")
else:
  print("No")

Fixed code:
s = input()
t = s[:int((len(s)-1)/2)]
u = s[(int((len(s)+3)/2)-1):]
if s == s[::-1] and t == t[::-1] and u == u[::-1]:
  print("Yes")
else:
  print("No")
Buggy code:
s=input()
n=len(s)
if not(s==s[::-1]):
  print(No)
  exit()
if not(s[:1+(n-1)/2]==s[:1+(n-1)/2][::-1]):
  print(No) 
  exit()
if not(s[(n+3)/2:]==s[(n+3)/2:]):
  print(No)
  exit()
print(Yes)

       

Fixed code:
s=input()
n=len(s)
if not(s==s[::-1]):
  print("No")
  exit()
if not(s[:(n-1)//2]==s[:(n-1)//2][::-1]):
  print("No") 
  exit()
if not(s[(n+3)//2-1:]==s[(n+3)//2-1:][::-1]):
  print("No")
  exit()
print("Yes")
Buggy code:
def ispalindrome(s):
	print(s)
	l=len(s)
	for i in range(l//2):
		if s[i]!=s[l-i-1]:
			return False
	return True
s=input()
l=len(s)
if ispalindrome(s) and ispalindrome(s[:l//2]) and ispalindrome(s[(l+1)//2:]):
	print("Yes")
else:
	print("No")


Fixed code:
s = input()
def ispalindrome(s):
    for i in range(len(s)//2):
        if s[i] != s[~i]:
            return False
    return True
if ispalindrome(s) and ispalindrome(s[:len(s)//2]) and ispalindrome(s[len(s)//2+1:]):
  print("Yes")
else:
  print("No")
Buggy code:
s = input()
S = list(s)
cnt = 0
l = int(len(s))
l = l // 2
for i in range(l + 1):
    if S[i] == S[-(1 + i)]:
        for j in range(l):
            if S[j] == S[-(l + 2 + j)]:
                cnt += 1


if cnt != 0:
    print('Yes')
else:
    print('No')


Fixed code:
s = input()
S = list(s)
cnt = 0
l = int(len(s))
l = l // 2
for i in range(l + 1):
    if S[i] == S[-(1 + i)]:
        for j in range(l):
            if S[j] == S[-(l + 2 + j)]:
                cnt += 1


if cnt == l * (l + 1):
    print('Yes')
else:
    print('No')
Buggy code:
s = input()

N = len(s)
if s==s[::-1] and s[:(N-1)//2]==s[:(N-1)//2][::-1] \
                            and s[(N+3)//2:N]==s[(N+3)//2:N][::-1]:
    print("Yes")
else:
    print("No")

Fixed code:
s = input()

N = len(s)
if s==s[::-1] and s[:(N-1)//2]==s[:(N-1)//2][::-1] \
                            and s[(N+3)//2-1:]==s[(N+3)//2-1:][::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
n = len(s)

front = s[:(n-1)//2]
rear = s[(n+1)//2:]

if s == s[::-1] and front == rear[::-1]:
  print('Yes')
else:
  print('No')

Fixed code:
s = input()
n = len(s)

front = s[:(n-1)//2]
rear = s[(n+1)//2:]

if s == s[::-1] and front == front[::-1] and rear == rear[::-1]:
  print('Yes')
else:
  print('No')
Buggy code:
def isPalindrome(s):
  return s == s[::-1]
 
s = input()
n = len(s)
res =  isPalindrome(s) and isPalindrome(s[:n//2+1]) and isPalindrome(s[n//2+2:])
print("Yes" if res else "No")

Fixed code:
def isPalindrome(s):
  return s == s[::-1]
 
s = input()
n = len(s)
res =  isPalindrome(s) and isPalindrome(s[:n//2]) and isPalindrome(s[n//2+1:])
print("Yes" if res else "No")
Buggy code:
s = input("")
l = len(s)
s1 = s[:int((l-1)/2)]
s2 = s[int((l+3)/2) - 1:]
if (s1 == s1[::-1]) and (s2 == s2[::-1]):
    print("Yes")
else :
    print("No")
print(s1,s2)

Fixed code:
s = input("")
l = len(s)
s1 = s[:int((l-1)/2)]
s2 = s[int((l+3)/2) - 1:]
if (s1 == s1[::-1]) and (s2 == s2[::-1]) and (s == s[::-1]):
    print("Yes")
else :
    print("No")
Buggy code:
s = input()

def is_palindrome(s):
  n_str = (len(s) - 1) // 2
  return s[: n_str][::-1] == s[-n_str: ]

result = "Yes" if is_palindrome(s) and is_palindrome(s[: (len(s)-1)//2]) and is_palindrome(s[(len(s)+3)//2:]) else "No"
print(result)

Fixed code:
s = input()

def is_palindrome(s):
  return s == s[::-1]

result = "Yes" if is_palindrome(s) and is_palindrome(s[: (len(s)-1)//2]) and is_palindrome(s[(len(s)+3)//2-1:]) else "No"
print(result)
Buggy code:
def kaibun(s):
    N = len(s)

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

string = input()
N = len(string)
if kaibun(string[:(N - 3) // 2]) and kaibun(string[(N + 1) // 2:N - 1]):
    print('Yes')
else:
    print('No')


Fixed code:
def kaibun(s):
    N = len(s)

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

string = input()
N = len(string)
if kaibun(string) and kaibun(string[:(N - 1) // 2]) and kaibun(string[(N + 1) // 2:N]):
    print('Yes')
else:
    print('No')
Buggy code:
S = str(input())

slist = list(S)
N = len(slist)
print(N)
k = int((N-1)/2)

rs = slist[::-1]
front = slist[0:k]
rfront = front[::-1]

if front == rfront and rs == slist:
    print("Yes")

else:
    print("No")


Fixed code:
S = str(input())

slist = list(S)
N = len(slist)
k = int((N-1)/2)

rs = slist[::-1]
front = slist[0:k]
rfront = front[::-1]

if front == rfront and rs == slist:
    print("Yes")

else:
    print("No")
Buggy code:
def f(x):
  return x==x[::-1]
S=str(input())
N=len(S)
S1=S[:(N-3)/2]
S2=S[(N+1)/2:]
if f(S) and f(S1) and f(S2):
  print('Yes')
else:
  print('No')
  

Fixed code:
S=str(input())
def f(x):
  return x==x[::-1]
N=len(S)
S1=S[:(N-1)//2]
S2=S[(N+1)//2:]
if f(S) and f(S1) and f(S2):
  print('Yes')
else:
  print('No')
Buggy code:
s = input()
end = (len(s)-1)//2
start = (len(s)+3)//2
if s[0:end] == s[end-1::-1]:
    if s[start-1::] == s[-1:start-2:-1]:
        if s[0::] == s[::-1]
            print("Yes")
        else:
            print("No")
    else:
        print("No")
else:
    print("No")

Fixed code:
s = input()
end = (len(s)-1)//2
start = (len(s)+3)//2
if s[0:end] == s[end-1::-1]:
    if s[start-1::] == s[-1:start-2:-1]:
        if s[0::] == s[::-1]:
            print("Yes")
        else:
            print("No")
    else:
        print("No")
else:
    print("No")
Buggy code:
def checkPalindrome(str1, str2):
  for i in range(len(str1) // 2):
    if str1[i] != str2[i]:
      return False
  return True
    
s = input()
rs = ''.join(list(reversed(s)))
print(s, rs)
cri1 = checkPalindrome(s, rs)

s2 = s[:len(s) // 2]
rs2 = ''.join(list(reversed(s2)))
print(s2, rs2)
cri2 = checkPalindrome(s2, rs2)

s3 = s[len(s) // 2 + 1:len(s)]
rs3 = ''.join(list(reversed(s3)))
print(s3, rs3)
cri3 = checkPalindrome(s3, rs3)

if cri1 and cri2 and cri3:
  print('Yes')
else:
  print('No')


Fixed code:
def checkPalindrome(str1, str2):
  for i in range(len(str1) // 2):
    if str1[i] != str2[i]:
      return False
  return True
    
s = input()
rs = ''.join(list(reversed(s)))
cri1 = checkPalindrome(s, rs)

s2 = s[:len(s) // 2]
rs2 = ''.join(list(reversed(s2)))
cri2 = checkPalindrome(s2, rs2)

s3 = s[len(s) // 2 + 1:len(s)]
rs3 = ''.join(list(reversed(s3)))
cri3 = checkPalindrome(s3, rs3)

if cri1 and cri2 and cri3:
  print('Yes')
else:
  print('No')
Buggy code:
a     = list(input())
a_re  = reversed(a)


if a == a_re:
  if len(a) % 2 == 0:
    b = a[0:len(a)]
    b_re = a_re[0:len(a)]
    b_re = reversed(b_re)
    if b == b_re:
      print('Yes')
    else:
      print('No')
  else:
    b = a[0:int(len(a)/2)]
    b_re = a_re[0:int(len(a))]
    b_re = reversed(b_re)
    if b == b_re:
      print('Yes')
    else:
      print('No')
else:
  print('No')

Fixed code:
a     = list(input())
a_re  = list(reversed(a))

if a == a_re:
  if len(a) % 2 == 0:
    b = a[0:len(a)/2]
    b_re = a[0:len(a)/2]
    b_re = list(reversed(b_re))
    if b == b_re:
      print('Yes')
    else:
      print('No')
  else:
    b = a[0:int(len(a)/2)]
    b_re = a[0:int(len(a)/2)]
    b_re = list(reversed(b_re))
    if b == b_re:
      print('Yes')
    else:
      print('No')
else:
  print('No')
Buggy code:
def a(s):
  n = len(s)
  for i in range(n // 2):
    if s[i] != s[-(i + 1)]:
      return False

  return True


def test(s):
  if not a(s):
    return "No1"

  n = len(s)
  if not a(s[:(n - 1) // 2]):
    return "No1"

  if not a(s[(n + 3) // 2 - 1:]):
    return "No3"

  return "Yes"


print(test(input().strip())[:2])


Fixed code:
def a(s):
  n = len(s)
  for i in range(n // 2):
    if s[i] != s[-(i + 1)]:
      return False

  return True


def test(s):
  if not a(s):
    return "No"

  n = len(s)
  if not a(s[:(n - 1) // 2]):
    return "No"

  if not a(s[(n + 3) // 2 - 1:]):
    return "No"

  return "Yes"


print(test(input().strip()))
Buggy code:
s = str( input() )

n = len( s )
s_l = s[:(n-1)//2]
s_r = s[(n+1)//2:]
print( s, 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")

Fixed code:
s = str( input() )

n = len( s )
s_l = s[:(n-1)//2]
s_r = s[(n+1)//2:]

if s == s[::-1] and s_l == s_l[::-1] and s_r == s_r[::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
import sys
input = sys.stdin.readline

S = str(input())
N = len(S)-1


N1 = (N-1)/2
N2 = (N+3)/2

s1 = S[:N]
s2 = S[:N1]
s3 = S[N2-1:N]

flag = True
for ss in [s1, s2, s3]:
    ss_l = len(ss)
    for i in range(ss_l):
        if ss[i] != ss[ss_l-i-1]:
            flag = False
            break
    if not flag:
        break

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



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

S = str(input())
N = len(S)-1

N1 = int((N-1)/2)
N2 = int((N+3)/2)

s1 = S[:N]
s2 = S[:N1]
s3 = S[N2-1:N]

flag = True
for ss in [s1, s2, s3]:
    ss_l = len(ss)
    for i in range(ss_l):
        if ss[i] != ss[ss_l-i-1]:
            flag = False
            break
    if not flag:
        break

if flag:
    print('Yes')
else:
    print('No')
Buggy code:
s = str(input())
n = len(s)

A = str(s[::n-1//2])
B = str(s[n+3//2::])

if A == (A[::-1]) and B == (B[::-1]):
    print("Yes")
else:
    print ("No")


Fixed code:
s = str(input())
n = len(s)

A = str(s[:(n-1)//2])
B = str(s[(n+3)//2-1:])

if s ==(s[::-1]) and A == (A[::-1]) and B == (B[::-1]):
    print("Yes")
else:
    print ("No")
Buggy code:
S = list(str(input()))

req1 = int((len(S) - 1) / 2) + 1
req2 = int((len(S) + 3) / 2) - 2
if S == list(reversed(S)) and S[req1:] == list(reversed(S[req1:])) and S[req2:] == list(reversed(S[req2:])):
  print("Yes")
else:
  print("No")

Fixed code:
S = list(str(input()))

req1 = int((len(S) - 1) / 2)
req2 = int((len(S) + 3) / 2) - 1
if S == list(reversed(S)) and S[:req1] == list(reversed(S[:req1])) and S[req2:] == list(reversed(S[req2:])):
  print("Yes")
else:
  print("No")
Buggy code:
s=input()
sl=list(reversed(s))
ns="".join(list(reversed(s)))
k=(len(s)-1)/2
t=s[:k]
tl=list(reversed(t))
nt="".join(list(reversed(t)))
n=(len(s)+3)/2
r=s[n-1:len(s)]
rl=list(reversed(r))
nr="".join(rl)
if s==ns and t==nt and r==nr:
    print("Yes")
else:
    print("No")

Fixed code:
s=input()
sl=list(reversed(s))
ns="".join(list(reversed(s)))
k=int((len(s)-1)/2)
t=s[:k]
tl=list(reversed(t))
nt="".join(list(reversed(t)))
n=int((len(s)+3)/2)
r=s[n-1:len(s)]
rl=list(reversed(r))
nr="".join(rl)
if s==ns and t==nt and r==nr:
    print("Yes")
else:
    print("No")
Buggy code:
S = input()

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

flag = True

flag = isKaibun(S)
flag = isKaibun(S[0 : len(S) // 2])
flag = isKaibun(S[(len(S) + 1) // 2 : len(S)])

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

Fixed code:
S = input()

def isKaibun(X):
  flag = True
  for i in range(len(X) // 2):
    if X[i]  != X[-1 - i]:
      flag = False
      break
  return flag

flag = False
if isKaibun(S):
  if isKaibun(S[0 : len(S) // 2]):
    if isKaibun(S[(len(S) + 1) // 2 : len(S)]):
      flag = True

if flag == True:
  print("Yes")
else:
  print("No")
Buggy code:
count=0
s=input()
len_s=len(s)
center=int((len_s-1)/2+1)
s_former=s[0:center-1]
s_leter=s[center:]
for a in range(int((len(s)-1)/2-1)):
    if(s[a]==s[-1-a]):
        pass
    else:
        count+=1
for a in range(int((len(s_former)-1)/2-1)):
    if(s_former[a]==s_former[-1-a]):
        pass
    else:
        count+=1
for a in range(int((len(s_leter)-1)/2-1)):
    if(s_leter[a]==s_leter[-1-a]):
        pass
    else:
        count+=1
if(count==0):
    print("Yes")
else:
    print("No")
print(s_former,s_leter)
print(s[-1])

Fixed code:
count=0
s=input()
len_s=len(s)
center=int((len_s-1)/2+1)
s_former=s[0:center-1]
s_leter=s[center:]
for a in range(int((len(s)-1)/2-1)):
    if(s[a]==s[-1-a]):
        pass
    else:
        count+=1
for a in range(int((len(s_former)+1)/2)):
    if(s_former[a]==s_former[-1-a]):
        pass
    else:
        count+=1
for a in range(int((len(s_leter)+1)/2)):
    if(s_leter[a]==s_leter[-1-a]):
        pass
    else:
        count+=1
if(count==0):
    print("Yes")
else:
    print("No")
Buggy code:
b = s[:m]

for i in range(int(m/2)):
    if b[i:(i+1)] != b[(m-i-1):m-i]:
        print('No')
        sys.exit()
m = int((n+3)/2)
b = s[m-1:]
m= len(b)
for i in range(int(m/2)):
    if b[i:(i+1)] != b[(m-i-1):m-i]:
        print('No')
        sys.exit()
print('Yes')

Fixed code:
import sys
s = input()

n = len(s)
m = int((n-1)/2)
b = s[:m]

for i in range(int(m/2)):
    if b[i:(i+1)] != b[(m-i-1):m-i]:
        print('No')
        sys.exit()
m = int((n+3)/2)
b = s[m-1:]
m= len(b)
for i in range(int(m/2)):
    if b[i:(i+1)] != b[(m-i-1):m-i]:
        print('No')
        sys.exit()
for i in range(int(n/2)):
    if s[i:(i+1)] != s[(n-i-1):n-i]:
        print('No')
        sys.exit()  
print('Yes')
Buggy code:
s=str(input())

cnt=0

num=len(s)//2

a=s[:num]
b=s[num+1:]
print(a)
print(b)

num2=len(a)//2
c=a[:num2]
d=a[num2+1:]

print(c)
print(d)

num3=int((len(s)+3)/2-1)
s1=s[num3:]
num4=len(s1)//2
e=s1[:num4]
f=s1[num4+1:]

print(e)
print(f)

if a==b[::-1]:
    cnt +=1

if c==d[::-1]:
    cnt +=1

if e==f[::-1]:
    cnt +=1

if cnt==3:
    print("Yes")
else:
    print("No")

Fixed code:
s=str(input())

cnt=0

num=len(s)//2

a=s[:num]
b=s[num+1:]

num2=len(a)//2
if len(a)%2 ==1:
    c=a[:num2]
    d=a[num2+1:]
else:
    c=a[:num2]
    d=a[num2:]


num3=int((len(s)+3)/2-1)
s1=s[num3:]
num4=len(s1)//2
if len(s1)%2==1:
    e=s1[:num4]
    f=s1[num4+1:]
else:
    e=s1[:num4]
    f=s1[num4:]


if a==b[::-1]:
    cnt +=1

if c==d[::-1]:
    cnt +=1

if e==f[::-1]:
    cnt +=1

if cnt==3:
    print("Yes")
else:
    print("No")
Buggy code:
def palind(word):
  word = word.lower()
  return word[::-1] ==word

num1 = int((N-1)/2)
num2 = int((N+3)/2)

text1 =S[0::num1]
text2 =S[num2-1::]

if palind(S) == True and palind(text1) == True and palind(text2) == True:
  print("Yes")
else:
  print("No")

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

def palind(word):
  word = word.lower()
  return word[::-1] ==word

num1 = int((N-1)/2)
num2 = int((N+3)/2)

text1 =S[0::num1]
text2 =S[num2-1::]

if palind(S) == True and palind(text1) == True and palind(text2) == True:
  print("Yes")
else:
  print("No")
Buggy code:
s=input()
def iskaibun(s):
  n=len(s)
  for i in range(n):
    if s[i]==s[-i-1]:
      continue
    else:
      return False
  return True
n=len(s)
if iskaibun(s) and iskaibun(s[:n//2+1]) and iskaibun(s[n//2+1:]):
  print('Yes')
else:
  print('No')

Fixed code:
s=input()
def iskaibun(s):
  n=len(s)
  for i in range(n):
    if s[i]==s[-i-1]:
      continue
    else:
      return False
  return True
n=len(s)
if iskaibun(s) and iskaibun(s[:(n-1)//2]) and iskaibun(s[(n+3)//2-1:]):
  print('Yes')
else:
  print('No')
Buggy code:
s = input()
n = len(s)
s1 = s[0:len(s)//2]
s2 = s[len(s)//2+1:len(s)]

def reverse(s): 
    return s[::-1]

def isPalindrome(s): 
    rev = reverse(s) 
  
    if (s == rev): 
        return True
    return False

if isPalindrome(s):
    if n % 2 == 0:
        print("No")
    elif isPalindrome(s1) and isPalindrome(s2):
        print("Yes")
    else:
        print("No")
else:
    print("Yes")

Fixed code:
s = input()
n = len(s)
s1 = s[0:len(s)//2]
s2 = s[len(s)//2+1:len(s)]

def reverse(s): 
    return s[::-1]

def isPalindrome(s): 
    rev = reverse(s) 
  
    if (s == rev): 
        return True
    return False

if isPalindrome(s):
    if n % 2 == 0:
        print("No")
    elif isPalindrome(s1) and isPalindrome(s2):
        print("Yes")
    else:
        print("No")
else:
    print("No")
Buggy code:
s=input()
n=len(s)
s1=s[0:(n-3)/2]
s2=s[(n+1)/2:n-1]
if s==s[::-1] and s1==s1[::-1] and s2==s2[::-1]:
  print("Yes")
else:
  print("No")

Fixed code:
s=input()
n=len(s)
s1=s[0:(n-1)//2]
s2=s[(n+1)//2:n]
if s==s[::-1] and s1==s1[::-1] and s2==s2[::-1]:
  print("Yes")
else:
  print("No")
Buggy code:
a = input();
cnt = 0;
if(a == a[::-1]):
	cnt+=1
n = len(a)
if(a[:(n-1)//2] == a[:(n-1)//2:-1):
    cnt+=1
if(a[(n+3)//2::-1] == a[(n+3)//2:]):
    cnt+=1
if(cnt == 3):
    print("Yes")
else:
   	print("No")

Fixed code:
a = input();
cnt = 0;
if(a == a[::-1]):
	cnt+=1
n = len(a)
if(a[:(n-1)//2] == a[:(n-1)//2:-1]):
    cnt+=1
if(a[(n+3)//2-1::][::-1] == a[(n+3)//2-1:]):
    cnt+=1
if(cnt == 3):
    print("Yes")
else:
   	print("No")
Buggy code:
inp = input()
part1 = inp[0:int((len(inp)-1)/2)]
part2 = inp[int((len(inp)+1)/2):]


def isParin(S):
    n = len(S)
    flg = 0
    for i in range(int(n/2)):
        if S[i] != S[n-1-i]:
            flg += 1
    if flg == 0:
        return True
    else:
        return False


if isParin(inp):
    if isParin(part1) and isParin(part2):
        print('Yes')
    else:
        print('No')


Fixed code:
inp = input()
part1 = inp[0:int((len(inp)-1)/2)]
part2 = inp[int((len(inp)+1)/2):]


def isParin(S):
    n = len(S)
    flg = 0
    for i in range(int(n/2)):
        if S[i] != S[n-1-i]:
            flg += 1
    if flg == 0:
        return True
    else:
        return False


if isParin(inp):
    if part1 == part2:
        print('Yes')
    else:
        print('No')
else:
    print('No')
Buggy code:
S = input()
N = len(S)


def is_palindrome(s):
    s_reverse = s[::-1]
    if s == s_reverse:
        return True
    else:
        return False

print(is_palindrome(S))

if is_palindrome(S) and is_palindrome(S[:(N-1)//2]) and is_palindrome(S[(N+3)//2-1:]):
    print('Yes')
else:
    print('No')


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


def is_palindrome(s):
    s_reverse = s[::-1]
    if s == s_reverse:
        return True
    else:
        return False

if is_palindrome(S) and is_palindrome(S[:(N-1)//2]) and is_palindrome(S[(N+3)//2-1:]):
    print('Yes')
else:
    print('No')
Buggy code:
def check(a):
  for i in range(int(len(a)/2)):
    if a[i]!=a[-(i+1)]:
       return False
  return True

S=input()
if kaibun(S):
  a=S[0:int(len(S)/2)]
  b=S[int(len(S)/2)+1:len(S)]
  if kaibun(a) and kaibun(b):
    print('Yes')
  else:
    print('No')
else:
    print('No')

Fixed code:
def check(a):
  for i in range(int(len(a)/2)):
    if a[i]!=a[-(i+1)]:
       return False
  return True
 
S=input()
if check(S):
  a=S[0:int(len(S)/2)]
  b=S[int(len(S)/2)+1:len(S)]
  if check(a) and check(b):
    print('Yes')
  else:
    print('No')
else:
    print('No')
Buggy code:
import sys
input=sys.stdin.readline
S = list(input())
n0 = len(S)
def kaibun(S):
    if S == S[::-1]:
        return 1
    else:
        return 0
if kaibun(S) == 1:
    s1 = S[0:n0 // 2]
    if kaibun(s1) == 1 :
        print("Yes")
    else:
        print("No")
else:
    print("No")

Fixed code:
import sys
input=sys.stdin.readline
S = input()[:-1]
n = len(S)
def kaibun(S):
    if S == S[::-1]:
        return 1
    else:
        return 0
if kaibun(S) == 0:
    print("No")
else:
    s1 = S[0:n // 2]
    if kaibun(s1) == 1:
        print("Yes")
    else:
        print("No")