qyliang/CodeNanoFix huggingface dataset:
Buggy code:
import math

def checkKaibun(s):
    ret = True
    length = len(s)
    for i in range(math.floor(length / 2)):
        if s[i] != s[len(s)-1-i]:
            return False
    return ret

s = input()
ret1 = checkKaibun(s)
#print("{}".format(ret1))

length = len(s)
s2 = s[0:(int)((length-1)/2)]
#print("{}".format(s2))
ret2 = checkKaibun(s2)
#print("{}".format(ret2))

s3 = s[(int)((length+1)/2):length]
#print("{}".format(s3))
ret3 = checkKaibun(s3)
#print("{}".format(ret3))

print("{}".format(ret1 and ret2 and ret3))



Fixed code:
import math

def checkKaibun(s):
    ret = True
    length = len(s)
    for i in range(math.floor(length / 2)):
        if s[i] != s[length-1-i]:
            return False
    return ret

s = input()
ret1 = checkKaibun(s)
#print("{}".format(ret1))

length = len(s)
s2 = s[0:(int)((length-1)/2)]
#print("{}".format(s2))
ret2 = checkKaibun(s2)
#print("{}".format(ret2))

s3 = s[(int)((length+1)/2):length]
#print("{}".format(s3))
ret3 = checkKaibun(s3)
#print("{}".format(ret3))

ret = "No"
if (ret1 and ret2 and ret3):
    ret = "Yes"
print("{}".format(ret))
Buggy code:
def is_kaibun(kaibun):
    for i in range(len(kaibun)//2):
        if kaibun[i] != kaibun[-i-1]:
            return False
    return True
  
s = input()

s_1 = s[:(len(s)-1)/2]
s_2 = s[(len(s)-3)/2:]

if is_kaibun(s) and is_kaibun(s_1) and is_kaibun(s_2):
  print('Yes')
else:
  print('No')

Fixed code:
def is_kaibun(kaibun):
    for i in range(len(kaibun)//2):
        if kaibun[i] != kaibun[-i-1]:
            return False
    return True
  
s = input()

s_1 = s[:(int)((len(s)-1)/2)]
s_2 = s[(int)((len(s)+3)/2)-1:len(s)]

if is_kaibun(s) and is_kaibun(s_1) and is_kaibun(s_2):
  print('Yes')
else:
  print('No')
Buggy code:
def strongPalindrome(S):
    S2 = S[0:(len(S)-1)//2]
    S3 = S[0:(len(S)+3)//2]
    return "Yes" if S == S[::-1] and S2 == S2[::-1] and S3 == S3[::-1] else "No"

S = input()
print(strongPalindrome(S))

Fixed code:
def strongPalindrome(S):
    S2 = S[0:(len(S)-1)//2]
    S3 = S[(len(S)+3-1)//2:]
    return "Yes" if S == S[::-1] and S2 == S2[::-1] and S3 == S3[::-1] else "No"

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

Fixed code:
s = input()
n = len(s)
sa = s[:int((n-1)/2)]
sb = s[int((n+3)/2)-1:]
if s == s[::-1] and sa == sa[::-1] and sb == sb[::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
S = input()
N = len(S)
def ispalindrome(string): return True if string==string[::-1] else False

S1=S[0:(N-1)//2]
S2=S[-1+(N+3)//2:N]
print(ispalindrome(S1))
if ispalindrome(S) and ispalindrome(S1) and ispalindrome(S2):
    print("Yes")
else:
    print("No")




Fixed code:
S = input()
N = len(S)
def ispalindrome(string): return True if string==string[::-1] else False

S1=S[0:(N-1)//2]
S2=S[-1+(N+3)//2:N]

if ispalindrome(S) and ispalindrome(S1) and ispalindrome(S2):
    print("Yes")
else:
    print("No")
Buggy code:
def main():
    S = list(input())
    N = len(S)

    kaibun_check(S)
    S1 = S[0:(N-1)//2 + 1]
    kaibun_check(S1)
    S2 = S[(N+3)//2 + 1: -1]
    kaibun_check(S2)

    print('Yes')


def kaibun_check(L):
    L_ = list(L.__reversed__())
    for s, s_ in zip(L, L_):
        if s != s_:
            print('No')
            exit()


if __name__ == '__main__':
    main()


Fixed code:
def main():
    S = list(input())
    N = len(S)

    kaibun_check(S)

    S1 = S[0:(N-1)//2]
    kaibun_check(S1)

    S2 = S[(N+3)//2:-1]
    kaibun_check(S2)

    print('Yes')


def kaibun_check(L):
    L_ = list(L.__reversed__())
    for s, s_ in zip(L, L_):
        if s != s_:
            print('No')
            exit()


if __name__ == '__main__':
    main()
Buggy code:
string = input()

def palindrome(inp):
  if inp == inp[::-1]: return True
  else: return False
  
if palindrome(string) and palindrome(string[:int((len(string) + 1)/2)] and palindrome(string[int((len(string) +3)/2):]: print("Yes")
else: print("No")

Fixed code:
string = input()

def palindrome(inp):
  if inp == inp[::-1]: return True
  else: return False

if palindrome(string) and palindrome(string[:int((len(string) -1)/2)]) and palindrome(string[int((len(string) +1)/2):]): print("Yes")
else: print("No")
Buggy code:
def kaibunCheck(s):
  flag = True
    n = len(s)
    for i in range((n + 1) // 2):
      if s[i] != s[(i + 1) * (-1)]:
        flag = False
    
  return flag
        
S = input()
N = len(S)

S1 = S[:(N - 1) // 2]
S2 = S[(N + 1) // 2 :]

if kaibunCheck(S) == True and kaibunCheck(S1) == True and kaibunCheck(S2) == True:
  print("Yes")
else:
  print("No")

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

  return flag
        
S = input()
N = len(S)

S1 = S[:(N - 1) // 2]
S2 = S[(N + 1) // 2 :]

if kaibunCheck(S) == True and kaibunCheck(S1) == True and kaibunCheck(S2) == True:
  print("Yes")
else:
  print("No")
Buggy code:
s=input()
n=len(s)
x=(n-1)//2
while i<x:
  if s[i]!=s[n-1-i] or s[i]!=s[x-1-i]:
    print('No')
    break 
  i=i+1
else:
  print('Yes')

Fixed code:
s=input()
n=len(s)
x=(n-1)//2
i=0
while i<x:
  if s[i]!=s[n-1-i] or s[i]!=s[x-1-i]:
    print('No')
    break 
  i=i+1
else:
  print('Yes')
Buggy code:
print("input")
S = input()
ch = list(S)
num = len(S)
n1 = int((num-1)/2)
result = str("Yes")
i = int(0)
j = int(0)
while i < n1:
    if ch[i] == ch[n1-1-i]:
        i = i+1
    else:
        result = str("No")
        break
if result == "Yes":
    while j < n1:
        if ch[num - n1+j] == ch[num - j-1]:
            j = j+1
        else:
            result = str("No")
            break
print(result)


Fixed code:
S = input()
ch = list(S)
num = len(S)
n1 = int((num-1)/2)
result = str("Yes")
i = int(0)
j = int(0)
k = int(0)
while i < n1:
    if ch[i] == ch[n1-1-i]:
        i = i+1
    else:
        result = str("No")
        break
if result == "Yes":
    while j < n1:
        if ch[num - n1+j] == ch[num - j-1]:
            j = j+1
        else:
            result = str("No")
            break
if result == "Yes":
    while k < num:
        if ch[k] == ch[num-1-k]:
            k = k + 1
        else:
            result = str("No")
            break
print(result)
Buggy code:
s = input()
n = len(s)
a = int((n-1)/2)
b = int((n+3)/2)
if n>0:
    x=s[:a]
    y = s[b-1:]
    print(x,y)
    if x==x[::-1] and y==y[::-1]:
      print("Yes")
    else:
      print("No")
else:
    print("No")

Fixed code:
s = input()
n = len(s)
a = int((n-1)/2)
b = int((n+3)/2)
x=s[:a]
y = s[b-1:]
if x==x[::-1] and y==y[::-1] and s==s[::-1]:
  print("Yes")
else:
  print("No")
Buggy code:
s = input()
n = len(s)

sa = s[:(n-1) // 2]
sb = s[(n + 1) // 2:]

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

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

sa = s[:(n - 1) // 2]
sb = s[(n + 1) // 2:]

if s == s[::-1] and sa == sa[::-1] and sb == sb[::-1]:
  print("Yes")
  
else:
  print("No")
Buggy code:
import sys

S = input()

# S = 'akasaka'

N = len(S)

S_rev = S[::-1]
if S != S_rev:
    print('No')
    sys.exit(1)

sub_S = S[:int((N - 1)/2)+1]
sub_S_rev = S[int((N + 3)/2)-1:]
if sub_S != sub_S_rev:
    print('No')
    sys.exit(1)

print('Yes')

Fixed code:
import sys

S = input()

# S = 'akasaka'

N = len(S)

S_rev = S[::-1]
if S != S_rev:
    print('No')
    sys.exit(0)

sub_S = S[:int((N - 1)/2)]
sub_S_rev = S[int((N + 3)/2)-1:]
if sub_S != sub_S_rev:
    print('No')
    sys.exit(0)

print('Yes')
Buggy code:
str = input()
n = len(str)
str_list = list(str)

for i in range(0,n//2):
    if str_list[i] != str_list[n//2-i-1]:
        print('No')
        return

for j in range(n//2+1,n):
    if str_list[i] != str_list[-i-1]:
        print('No')
        return

print('Yes')

Fixed code:
str = input()
n = len(str)
str_list = list(str)

ans = 'Yes'
for i in range(0,n//2):
    if str_list[i] != str_list[n//2-i-1]:
        ans = 'No'

for j in range(n//2+1,n):
    if str_list[i] != str_list[-i-1]:
        ans = 'No'

for i in range(n):
    if str_list[i] != str_list[-i-1]:
        ans = 'No'

print(ans)
Buggy code:
def check(a):
    i=0
    j=len(a)-1
    b=True
    while(i<=j):
        if(a[i]!=a[j]):
            return False
        i+=1;
        j-=1
    return b


a=(input())
b=a[:(len(a)-1)//2:]
c=a[(len(a)+3)//2::]
if(check(a)==True and check(b)==True and check(c)==True):
    print("Yes")
else:
    print("No")
           

Fixed code:
def check(a):
    i=0
    j=len(a)-1
    b=True
    while(i<=j):
        if(a[i]!=a[j]):
            return False
        i+=1;
        j-=1
    return b


a=(input())
b=a[:(len(a)-1)//2:]
c=a[(len(a)+2)//2::]
#print(a,b,c)
if(check(a)==True and check(b)==True and check(c)==True):
    print("Yes")
else:
    print("No")
Buggy code:
l=list(input())
def kaibun(c):
  d=c[::-1]
  if c = d:
    return 0
  else:
    return 1
a=kaibun(l)
m=l[:int((len(l)-1)/2)]
n=l[int((len(l)+1)/2):]

b=kaibun(m)
c=kaibun(n)

if a+b+c==0:
  print('Yes')
else:
  print('No')
 

Fixed code:
l=list(input())
def kaibun(c):
  d=c[::-1]
  if c == d:
    return 0
  else:
    return 1
a=kaibun(l)
m=l[:int((len(l)-1)/2)]
n=l[int((len(l)+1)/2):]

b=kaibun(m)
c=kaibun(n)

if a+b+c==0:
  print('Yes')
else:
  print('No')
Buggy code:
s = list(input())
n = len(s)
s_0 = s[:(n-1)//2]
s_1 = s[(n+1)//2:]
if s_0 == s_0[::-1] and s_1 == s_1[::-1] and s == s[::-1]
    print("Yes")
else:
    print("No")

Fixed code:
s = list(input())
n = len(s)
s_0 = s[:(n-1)//2]
s_1 = s[(n+1)//2:]
if s_0 == s_0[::-1] and s_1 == s_1[::-1] and s == s[::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
t = s[:(len(s)-1)/2]
u = s[(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[:(len(s)-1)//2]
u = s[(len(s)+3)//2-1:]
if s == s[::-1] and t == t[::-1] and u == u[::-1]:
  print("Yes")
else:
  print("No")
Buggy code:
# -*- coding: utf-8 -*-

S = input()
N = len(S)

befor = S[0:(( N ) // 2)]
after = S[(( N + 1) // 2):N]
print(befor)
print(after)
if ( befor == after ) :
    print("Yes")
else :
    print("No")


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

S = input()
N = len(S)

befor = S[0:(( N ) // 2)]
after = S[(( N + 1) // 2):N]
if ( befor == after ) :
    print("Yes")
else :
    print("No")
Buggy code:
akacaka
S = []
S_reverse = []
S_first = []
S_first_reverse = []
S_last = []
S_last_reverse = []

S = list(input())
S_reverse = S.copy()
S_reverse.reverse()
S_first = S[:len(S)//2]
S_last = S[(len(S)+1)//2:]
S_first_reverse = S_first.copy()
S_first_reverse.reverse()
S_last_reverse = S_last.copy()
S_last_reverse.reverse()


if S != S_reverse:
    print("No")
elif S_first == S_first_reverse and S_last == S_last_reverse:
    print("Yes")
else:
    print("No")

Fixed code:
S = []
S_reverse = []
S_first = []
S_first_reverse = []
S_last = []
S_last_reverse = []

S = list(input())
S_reverse = S.copy()
S_reverse.reverse()
S_first = S[:len(S)//2]
S_last = S[(len(S)+1)//2:]
S_first_reverse = S_first.copy()
S_first_reverse.reverse()
S_last_reverse = S_last.copy()
S_last_reverse.reverse()


if S != S_reverse:
    print("No")
elif S_first == S_first_reverse and S_last == S_last_reverse:
    print("Yes")
else:
    print("No")
Buggy code:
s=input()
n=len(s)
a=int(n/2)
s1a=s[0:a]
s2a=s[n-a:n]
s2=s[::-1]
s1b=s1a[::-1]
s2b=s2a[::-1]
print(s,s2,s1a,s1b,s2a,s2b)
if s==s2 and s1a==s1b and s2a==s2b:
	print("Yes")
else:
	print("No")


Fixed code:
s=input()
n=len(s)
a=int(n/2)
s1a=s[0:a]
s2a=s[n-a:n]
s2=s[::-1]
s1b=s1a[::-1]
s2b=s2a[::-1]
if s==s2 and s1a==s1b and s2a==s2b:
	print("Yes")
else:
	print("No")
Buggy code:
def kaibun(str):
    return True if str == str[::-1] else False

s = input()
if not kaibun(s) :
    print('No')
    return
n = len(s)
n1 = (n - 1) // 2
if not kaibun(s[:n1]) :
    print('No')
    return
n2 = (n + 3) // 2 - 1
if not kaibun(s[n2:]) :
    print('No')
    return
print('Yes')

Fixed code:
def resolve():
    s = input()
    if not kaibun(s) :
        print('No')
        return
    n = len(s)
    n1 = (n - 1) // 2
    if not kaibun(s[:n1]) :
        print('No')
        return
    n2 = (n + 3) // 2 - 1
    if not kaibun(s[n2:]) :
        print('No')
        return
    print('Yes')

def kaibun(str):
    return True if str == str[::-1] else False

resolve()
Buggy code:
def kaibun(s):
    print("kaibun: ", s)
    for i in range(round((len(s) / 2))):
        if s[i] == s[len(s) - i - 1]:
            continue
        else:
            return False
    return True


s = str(input())
n = len(s)

if kaibun(s):
    if kaibun(s[0:round((n - 1) / 2)]):
        if kaibun(s[round((n + 3) / 2):]):
            print('Yes')
        else:
            print('No')
    else:
        print('No')
else:
    print('No')


Fixed code:
def kaibun(s):
    for i in range(round((len(s) / 2))):
        if s[i] == s[len(s) - i - 1]:
            continue
        else:
            return False
    return True


s = str(input())
n = len(s)
if kaibun(s):
    if kaibun(s[0:round((n - 1) / 2)]):
        if kaibun(s[round((n + 3) / 2) - 1:]):
            print('Yes')
        else:
            print('No')
    else:
        print('No')
else:
    print('No')
Buggy code:
s=input()
n=len(s)
flag=0


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

if v==((n-1)//2)
    print("Yes")
else:
    print("No")

Fixed code:
s=input()
n=len(s)
flag=0


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

if flag==((n-1)//2):
    print("Yes")
else:
    print("No")
Buggy code:
s=input()
n=len(s)
s1=s[(n-1)//2]
flag=0
for i in range(len(s1)//2):
    if(s1[i]!=s1[-1-i]):
        flag=1
        break

s1=s[(n+3)//2-1]
for i in range(len(s1)//2):
    if(s1[i]!=s1[-1-i]):
        flag=1
        break

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

if flag==1:
    print("No")
else:
    print("Yes")

Fixed code:
s=input()
n=len(s)
s1=s[:(n-1)//2]
flag=0
for i in range(len(s1)//2):
    if(s1[i]!=s1[-1-i]):
        flag=1
        break

s1=s[(n+3)//2-1:]
for i in range(len(s1)//2):
    if(s1[i]!=s1[-1-i]):
        flag=1
        break

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

if flag==1:
    print("No")
else:
    print("Yes")
Buggy code:
 = input()
flag = True
for i in range((len(s)-1)//2):
	if s[i] == s[len(s)-i-1]:
		continue
	else:
		flag = False
		break

if flag:
	left = s[:(len(s)-1)//2]
	right = s[(len(s)+3)//2-1:]
	if left == right:
		print("Yes")
	else:
		print("No")
else:
	print("No")


Fixed code:
s= input()
flag = True
for i in range((len(s)-1)//2):
	if s[i] == s[len(s)-i-1]:
		continue
	else:
		flag = False
		break

if flag:
	left = s[:(len(s)-1)//2]
	right = s[(len(s)+3)//2-1:]
	if left == right:
		print("Yes")
	else:
		print("No")
else:
	print("No")
Buggy code:
S = input()
N = len(S)

pre = S[0 : int((N-1)/2)]
print(pre)
bck = S[int((N+1)/2) : N]
print(bck)

if S == S[::-1] and pre == pre[::-1] and bck == bck[::-1]:
    print("Yes")
else:
    print("No")

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

pre = S[0 : int((N-1)/2)]

bck = S[int((N+1)/2) : N]

if S == S[::-1] and pre == pre[::-1] and bck == bck[::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
if len(s) / 2 == 0:
    print("No")
    exit()

def check(i):
    if len(i) % 2 != 0:
        i2 = i[len(i) // 2 + 1:len(i)]
    else:
        i2 = i[len(i) // 2:len(i)]
    if i[0:len(i) // 2] == i2[::-1] or len(i2) == 1:
        return(True)
    return(False)

s2 = s[0:(len(s) - 1) // 2]
s3 = s[(len(s) - 1) // 2 + 1:len(s)]

if check(s) == True and check(s2) == True and check(s3) == True:
    print("Yes")
else:
    print("No")


Fixed code:
s = input()
if len(s) / 2 == 0:
    print("No")
    exit()

def check(i):
    if len(i) % 2 != 0:
        i2 = i[len(i) // 2 + 1:len(i)]
    else:
        i2 = i[len(i) // 2:len(i)]
    if i[0:len(i) // 2] == i2[::-1] or len(i) == 1:
        return(True)
    return(False)

s2 = s[0:(len(s) - 1) // 2]
s3 = s[(len(s) - 1) // 2 + 1:len(s)]

if check(s) == True and check(s2) == True and check(s3) == True:
    print("Yes")
else:
    print("No")
Buggy code:
s=input()
n=len(s)
for i in range(n):
    if s[i]!=s[n-1-i]:
        print("No")
        exit()
harf=int((n-1)/2
for i in range(harf):
    if s[i]!=s[harf-1-i]:
        print("No")
        exit()
for i in range(harf+1,n):
    if s[i]!=s[n-1-(i-harf-1)]:
        print("No")
        exit()
print("Yes")

Fixed code:
s=input()
n=len(s)
for i in range(n):
    if s[i]!=s[n-1-i]:
        print("No")
        exit()
harf=int((n-1)/2)
for i in range(harf):
    if s[i]!=s[harf-1-i]:
        print("No")
        exit()
for i in range(harf+1,n):
    if s[i]!=s[n-1-(i-harf-1)]:
        print("No")
        exit()
print("Yes")
Buggy code:
s = input()
l = len(s)
s1 = s[:int((l-1)/2)]
s2 = s1[::-1]
s3 = s[int((l+1)/2):]
s4 = s3[::-1]

m = s[:int((l-1)/2)]
n = len(m)
m1 = m[:int((n-1)/2)]
m2 = m1[::-1]
m3 = m[int((n+1)/2):]
m4 = m3[::-1]

a = s[int((l+3)/2-1):]
b = len(a)
a1 = a[:int((b-1)/2)]
a2 = a1[::-1]
a3 = a[int((b+1)/2):]
a4 = a3[::-1]

print(s, s1, s2, s3, s4)
print(m, m1, m2, m3, m4)
print(a, a1, a2, a3, a4)

if (s2 in s4) & (m2 in m4) & (a2 in a4):
    print("Yes")
else:
    print("No")

Fixed code:
s = input()
l = len(s)
s1 = s[:int((l-1)/2)]
s3 = s[int((l+1)/2):]
s4 = s3[::-1]

m = s[:int((l-1)/2)]
n = len(m)
m1 = m[:int((n)/2)]
m3 = m[int((n+1)/2):]
m4 = m3[::-1]

a = s[int((l+3)/2-1):]
b = len(a)
a1 = a[:int((b-1)/2)]
a3 = a[int((b+1)/2):]
a4 = a3[::-1]


if (s1 in s4) & (m1 in m4) & (a1 in a4):
    print("Yes")
else:
    print("No")
Buggy code:
str = input()
rev_str = str[::-1]
len_str = len(str)

pre_str = str[0:((len_str-1)//2)]
pro_str = str[(((len_str+3)//2)-1)::]

print(pre_str)
print(pro_str)


rev_pre_str = pre_str[::-1]
rev_pro_str = pro_str[::-1]

pali = 0

if str == rev_str:
    if pre_str == rev_pre_str:
        if pro_str == rev_pro_str:
            pali = 1

if pali == 1:
    print("Yes")
else:
    print("No")


Fixed code:
str = input()
rev_str = str[::-1]
len_str = len(str)

pre_str = str[0:((len_str-1)//2)]
pro_str = str[(((len_str+3)//2)-1)::]

#print(pre_str)
#print(pro_str)


rev_pre_str = pre_str[::-1]
rev_pro_str = pro_str[::-1]

pali = 0

if str == rev_str:
    if pre_str == rev_pre_str:
        if pro_str == rev_pro_str:
            pali = 1

if pali == 1:
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
length = len(s)

def palindrome(string):
    if s == s[::-1]:
        return True
    else:
        return False

if palindrome(s) and palindrome(s[:(length-1)//2]) and palindrome(s[(length+1)//2:]):
    print('Yes')
else:
    print('No')

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

def palindrome(string):
    if string == string[::-1]:
        return True
    else:
        return False

if palindrome(s) and palindrome(s[:(length-1)//2]) and palindrome(s[(length+1)//2:]):
    print('Yes')
else:
    print('No')
Buggy code:
s = input()
n = len(s)
sf = s[0:(n-1)//2]
sr = s[::-1][0:(n-1)//2]
print('YNeos'[not[sf == sf[::-1] and sr == sr[::-1]]::2])

Fixed code:
s = input()
n = len(s)
sf = s[0:(n-1)//2]
sr = s[::-1][0:(n-1)//2]
print('YNeos'[not(s == s[::-1] and sf == sf[::-1] and sr == sr[::-1])::2])
Buggy code:
S=input()
N=len(S)
def chk(s):
  n=len(s)
  for i in range(n//2):
    if s[i]!=s[n-1-i]:
      return False
if chk(S) and chk(S[:((N-1)//2)+1]) and chk(S[(N+3)//2:]):
  print('Yes')
else:
  print('No')

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

res='Yes'
N=len(S)

def ispalindrome(s):
    h = len(s) // 2
    if (len(s)==2) & (h==1):
        if s[0]==s[1]:
            return 1
        else: return 0
    else:
        for a, b in zip(s[:h], reversed(s[h+1:])):
            if a != b: return 0
        return 1
    
if ispalindrome(S)==0:
    res='No'
else:
    for i in range(N):
        s1=S[0:(N-1)//2]
        s2=S[(N+4)//2:N]
        if (ispalindrome(s1)==0):
            res='No'
        if (ispalindrome(s2)==0):
            res='No'
print(res)

Fixed code:
S=list(input())

res='Yes'
N=len(S)

def ispalindrome(s):
    h = len(s) // 2
    if (len(s)==2) & (h==1):
        if s[0]==s[1]:
            return 1
        else: return 0
    else:
        for a, b in zip(s[:h], reversed(s[h+1:])):
            if a != b: return 0
        return 1
    
if ispalindrome(S)==0:
    res='No'
else:
    for i in range(N):
        s1=S[0:(N-1)//2]
        s2=S[(N+2)//2:N]
        if (ispalindrome(s1)==0):
            res='No'
        if (ispalindrome(s2)==0):
            res='No'
print(res)
Buggy code:
letter = str(input())
N = len(letter)

l_1 = letter[:int((N-1)/2)]
l_2 = letter[int((N+3)/2-1):]

if(l == l[::-1] and l_1 == l_1[::-1] and l_2 == l_2[::-1]):
    ans = "Yes"
else:
    ans = "No"
# print(l_1)
# print(l_2)

print(ans)


Fixed code:
letter = str(input())
N = len(letter)

l_1 = letter[:int((N-1)/2)]
l_2 = letter[int((N+3)/2-1):]

if(letter == letter[::-1] and l_1 == l_1[::-1] and l_2 == l_2[::-1]):
    ans = "Yes"
else:
    ans = "No"
# print(l_1)
# print(l_2)

print(ans)
Buggy code:
S=input()
N=len(S)

A=S[:(N-1)//2]
B=S[(N+3)//2-1:])
for i in range(len(A)):
	if A[i]!=A[-(i+1)]:
		print("No")
		exit()
for i in range(len(B)):
	if B[i]!=B[-(i+1)]:
		print("No")
		exit()
print("Yes")

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

A=S[:(N-1)//2]
B=S[(N+3)//2-1:]

for i in range(len(S)):
	if S[i]!=S[-(i+1)]:
		print("No")
		exit()
for i in range(len(A)):
	if A[i]!=A[-(i+1)]:
		print("No")
		exit()
for i in range(len(B)):
	if B[i]!=B[-(i+1)]:
		print("No")
		exit()
print("Yes")
Buggy code:
S = input()

def judge(x):
  if "".join(list(reversed(x))) == x:
    return True
  else:
    return False
  
def solve(x):
  if judge(x) and judge(x[0:(len(x)-1)/2]) and judge(x[(len(x)+1)/2:]):
    print("Yes")
  else:
    print("No")
    
    
solve(S)

Fixed code:
S = input()

def judge(x):
  if "".join(list(reversed(x))) == x:
    return True
  else:
    return False
  
def solve(x):
  if judge(x) and judge(x[0:int((len(x)-1)/2)]) and judge(x[int((len(x)+1)/2):]):
    print("Yes")
  else:
    print("No")
    
    
solve(S)
Buggy code:
data = input()
S = [c for c in data]
S_inverse = list(reversed(S))

print(S)
print(S_inverse)

if S != S_inverse:
    print("No")
    exit(0)

N = len(S)
if S[: int((N - 1) / 2)] != S_inverse[int((N + 3) / 2):]:
    print("No")
    exit(0)

if S[int((N + 3) / 2):] != S_inverse[:int((N - 1) / 2)]:
    print("No")
    exit(0)

print("Yes")


Fixed code:
data = input()
S = [c for c in data]
S_inverse = list(reversed(S))

N = len(S)

if S != S_inverse:
    print("No")
    exit(0)

if S[: int((N - 1) / 2)] != S_inverse[int((N + 3) / 2 - 1):]:
    print("No")
    exit(0)

if S[int((N + 3) / 2 - 1):] != S_inverse[:int((N - 1) / 2)]:
    print("No")
    exit(0)

print("Yes")
Buggy code:
S=input()
sum="Yes"
kai=len(S)
unk=(int(kai)-1)/2
unk1=(int(kai)+3)/2
A=S[0:int(unk)]
B=S[int(unk1):int(kai)]
for i in range(kai//2):
  if S[i]!=S[-i-1]:
    sum="No"
for i in range(len(A)):
  if A[i]!=A[-i-1]:
    sum="No"
for i in range(len(B)):
  if B[i]!=B[-i-1]:
    sum="No"
print(sum)

Fixed code:
S=input()
sum="Yes"
kai=len(S)
unk=(int(kai)-1)/2
unk1=(int(kai)+3)/2
A=S[0:int(unk)]
B=S[int(unk1-1):int(kai)]
#print(B)
for i in range(kai//2):
  if S[i]!=S[-i-1]:
    sum="No"
for i in range(len(A)):
  if A[i]!=A[-i-1]:
    sum="No"
for i in range(len(B)):
  if B[i]!=B[-i-1]:
    sum="No"
print(sum)
Buggy code:
s=input()
sl=len(s)
if s[:(sl-1)/2]==s[((sl+3)/2)-1:]:
    print('Yes')
else :
    print('No')


Fixed code:
s=input()
sl=len(s)
if s[:int((sl-1)/2)]==s[int(((sl+3)/2)-1):]:
    print('Yes')
else :
    print('No')
Buggy code:
def pal(string):
    return True if string==string[::-1] else False

S = input()

if palindrome(S) and palindrome(S[0:int((len(S)-1)/2)]) and palindrome(S[int((len(S)+3)/2)-1:]):
    print('Yes')
else:
    print('No')

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

S = input()

if pal(S) and pal(S[0:int((len(S)-1)/2)]) and pal(S[int((len(S)+3)/2)-1:]):
    print('Yes')
else:
    print('No')