qyliang/CodeNanoFix huggingface dataset:
Buggy code:
import sys
S = input()

if (len(S)%2 == 0):
    print('No')
    sys.exit()

N1 = int((len(S)-1) / 2)
N3 = int((len(S)+3) / 2)

print(N1,N3)

sl = []
nl = []
for i in range(N1):
    sl.append(S[i])

for j in range(N3-1, len(S)):
    nl.append(S[j])

print(sl,nl)
moji1= ''
for x in sl:
    moji1 = moji1+ x

moji2 = ''
for x in nl:
    moji2 = moji2 + x

remoji1 = list(reversed(moji1))
remoji2 = list(reversed(moji2))

if moji1 == ''.join(remoji1) and moji2 == ''.join(remoji2):
    print('Yes')
else:
    print('No')

Fixed code:
import sys
S = input()

if (len(S)%2 == 0):
    print('No')
    sys.exit()

N1 = int((len(S)-1) / 2)
N3 = int((len(S)+3) / 2)

sl = []
nl = []
for i in range(N1):
    sl.append(S[i])

for j in range(N3-1, len(S)):
    nl.append(S[j])

moji1= ''
for x in sl:
    moji1 = moji1+ x

moji2 = ''
for x in nl:
    moji2 = moji2 + x

remoji1 = list(reversed(moji1))
remoji2 = list(reversed(moji2))

res = list(reversed(S))

if moji1 == ''.join(remoji1) and moji2 == ''.join(remoji2) and S == ''.join(res):
    print('Yes')
else:
    print('No')
Buggy code:
ef hantei(s):
    rev_s = s[::-1]

    for x in range(len(s)):
        if s[x] != rev_s[x]:
            return False
    
    return True

s = input()

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


Fixed code:
def hantei(s):
    rev_s = s[::-1]

    for x in range(len(s)):
        if s[x] != rev_s[x]:
            return False
    
    return True

s = input()

if hantei(s) and hantei(s[:int((len(s)-1)/2)]) and hantei(s[int((len(s)+3)/2)-1:]):
    print("Yes")
else:
    print("No")
Buggy code:
def is_p(s):
    return s == s[::-1]
s = input()
n = len(s)
l, r = (n - 1)//2, l + 1
print('Yes' if is_p(s) and is_p(s[:l]) and is_p(s[r:]) else 'No')

Fixed code:
def is_p(s):
    return s == s[::-1]
s = input()
n = len(s)
l = (n - 1)//2
r = l + 1
print('Yes' if is_p(s) and is_p(s[:l]) and is_p(s[r:]) else 'No')
Buggy code:
S = input()
k1 = ''
k2 = ''
for i in range(0,(len(S) - 1) // 2):
  k1 += S[i]
for i in range(((len(S) + 3) // 2) - 1, len(S)):
  k2 += S[i]
print(k1)
print(k2)
if k1 == k1[::-1] and k2 == k2[::-1] and 3 <= len(S) <= 99:
  print('Yes')
else:
  print('No')

Fixed code:
S = input()
k1 = ''
k2 = ''
for i in range(0,(len(S) - 1) // 2):
  k1 += S[i]
for j in range(((len(S) + 3) // 2) - 1, len(S)):
  k2 += S[j]
if k1 == k1[::-1] and k2 == k2[::-1] and 3 <= len(S) <= 99 and len(S) % 2 == 1 and S == S[::-1]:
  print('Yes')
else:
  print('No')
#print(k2)
Buggy code:
S = input()
N = len(S)

for i in range(int((len(S)-1)/2)):
  if(S[i] != S[(i+1)*(-1)]):
    print(1)
    print('No')
    exit()

for i in range(int((len(S)-1)/4)):
  if S[i] != S[int((N-1)/2-1-i)]:
    print(2)
    print('No')
    exit()

for i in range(int((len(S)-1)/4)):
  #print(S[int((N+3)/2-1+i)])
  #print(S[(i+1)*(-1)])
  #print('===')
  if S[int((N+3)/2-1+i)] != S[(i+1)*(-1)]:
    print('No')
    exit()

print('Yes')

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

for i in range(int((len(S)-1)/2)):
  if(S[i] != S[(i+1)*(-1)]):
    print('No')
    exit()

for i in range(int((len(S)-1)/4)):
  if S[i] != S[int((N-1)/2-1-i)]:
    print('No')
    exit()

for i in range(int((len(S)-1)/4)):
  if S[int((N+3)/2-1+i)] != S[(i+1)*(-1)]:
    print('No')
    exit()

print('Yes')
Buggy code:
s = list(input())
s_f = s[0: (len(s) - 1) // 2]
s_b = s[(len(s) + 3) // 2 - 1:len(s)]

if (s != s[::-1]) or (s_f != s_f[::-1]) or (s_b != s_b[::-1]):
    print('No')
else:
    print('Yes')

print(s_f, s_b)


Fixed code:
s = list(input())
s_f = s[0: (len(s) - 1) // 2]
s_b = s[(len(s) + 3) // 2 - 1:len(s)]

if (s != s[::-1]) or (s_f != s_f[::-1]) or (s_b != s_b[::-1]):
    print('No')
else:
    print('Yes')
Buggy code:
s = input()
n = len(s)
left = s[0:int((n-1)/2)]
print(left)
right = s[int((n+3)/2)-1:n]
print(right)
if s == s[::-1] and left == left[::-1] and right == right[::-1]:
    print("Yes")
else:
    print("No")

Fixed code:
s = input()
n = len(s)
left = s[0:int((n-1)/2)]
right = s[int((n+3)/2)-1:n]
if s == s[::-1] and left == left[::-1] and right == right[::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
# -*- coding: utf-8 -*-

s = list(input())
fl = True

sf = list(s)
sf.reverse()

if sf != s:
    fl = False
else:
    s1 = s[:len(s)//2]
    s1r = list(s1)
    s1r.reverse()
    if s1 != s1r:
        fl = False
    else:
        s2 = s[:(len(s) + 3) // 2]
        s2r = list(s2)
        s2r.reverse()
        if s2r != s2:
            fl = False

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

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

s = list(input())
fl = True

sf = list(s)
sf.reverse()

if sf != s:
    fl = False
else:
    s1 = s[:len(s)//2]
    s1r = list(s1)
    s1r.reverse()
    if s1 != s1r:
        fl = False
    else:
        s2 = s[(len(s) + 3) // 2 - 1:]
        s2r = list(s2)
        s2r.reverse()
        if s2r != s2:
            fl = False

if fl:
    print('Yes')
else:
    print('No')
Buggy code:
s=input()

n=len(s)
flag=0
kaibun=0
l=[]

for i in range(int((n-1)/2)):
    if s[i] != s[n-1-i]:
        flag=1
    l.append(s[i])
    if flag ==1:
        break
if flag ==1:
    print('No')
if len(l)%2==0:
    for i in range(int(len(l)/2)):
        if l[i]!=l[len(l)-1-i]:
            kaibun=1
        if kaibun ==1:
            break
else:
    for i in range(int((len(l)-1)/2)):
        if l[i]!=l[len(l)-1-i]:
            kaibun=1
        if kaibun ==1:
            break  
if kaibun ==1:
    print('No')
else:
    print('Yes')

Fixed code:
s=input()

n=len(s)
flag=0
kaibun=0
l=[]

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

if len(l)%2==0:
    for i in range(int(len(l)/2)):
        if l[i]!=l[len(l)-1-i]:
            kaibun=1
        if kaibun ==1:
            break
else:
    for i in range(int((len(l)-1)/2)):
        if l[i]!=l[len(l)-1-i]:
            kaibun=1
        if kaibun ==1:
            break  
if kaibun ==1 or flag==1:
    print('No')
else:
    print('Yes')
Buggy code:
S=input()
for i in range(len(S)//4):
    print(i)
    if not S[i]==S[-i-len(S)//2-2]==S[i+len(S)//2+1]==S[-i-1]:
        exit()
print("Yes")

Fixed code:
S=input()
for i in range(len(S)//2):
    if S[i]!=S[-i-1]:
        print("No")
        exit()
for i in range(len(S)//4):
    if not S[i]==S[-i-len(S)//2-2]==S[i+len(S)//2+1]==S[-i-1]:
        print("No")
        exit()
print("Yes")
Buggy code:
s = str(input())
#s = 'bakasakab'
x = len(s)

ck = 1
for i in range(x//2):
  if not s[i] == s[x-i-1]:
    ck = 0
    break

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


Fixed code:
s = str(input())
#s = 'bakasakab'
x = len(s)

ck = 1
for i in range(x//2):
  if not s[i] == s[x-i-1]:
    ck = 0
    break
  if not s[i] == s[(x-1)//2-i-1]:
    ck = 0
    break
  if not s[i] == s[(x+3)//2+i-1]:
    ck = 0
    break

if ck:
  print('Yes')
else:
  print('No')
Buggy code:
s=input()
n = len(s)
front = s[1:(n-1)//2]
back = s[(n+3)//2:n]
if s==s[::-1]:
  if front==front[::-1]:
    if back==back[::-1]:
      print('Yes')
    else:
      print('No')
  


Fixed code:
s=input()
n = len(s)
front = s[:(n-1)//2]
back = s[(n+3)//2-1:n]
if s==s[::-1]:
  if front==front[::-1]:
    if back==back[::-1]:
      print('Yes')
    else:
      print('No')
  else:
      print('No')
else:
      print('No')
Buggy code:
s = list(str(input()))
t = s
t.reverse()
x = ''.join(s)
y = ''.join(t)
n = len(s)
k = int((n-1)/2)
M = int((n+3)/2)
l = []
m = []
for i in range(N):
    l.append(s[i])
for i in range (M-1,N):
    m.append(s[i])
a = ''.join(l)
b = ''.join(m)
l.reverse()
m.reverse()
A = ''.join(l)
B = ''.join(m)
if (a==A and b==B and x == y):
    print('Yes')
else:
    print('No')

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

n = len(s)
N = int((n-1)/2)
M = int((n+3)/2)

l = []
m = []

for i in range(N):
    l.append(s[i])
    
for i in range (M-1,n):
    m.append(s[i])
    
a = ''.join(l)
l.reverse()
A = ''.join(l)

b = ''.join(m)
m.reverse()
B = ''.join(m)

t = s
t.reverse()
x = ''.join(s)
y = ''.join(t)

if (a==A and b==B and a == b):
    print('Yes')
else:
    print('No')
Buggy code:
S=list(input())
N=len(S)
S1=S[:(N-1)//2]
S2=S[(N+1)//2:]
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[:(N-1)//2]
S2=S[(N+1)//2:]
if S==S[::-1] and S1==S1[::-1] and S2==S2[::-1]:
  print("Yes")
else:
  print("No")
Buggy code:
# This file is a "Hello, world!" in Python language by CPython for wandbox.
import sys

s = input()
if s != s[::-1]:
    print("No")
    sys.exit()
index = (int)(len(s) - 1) // 2
s1 = s[0:index]
if s1 != s1[::-1]:
    print("No1")
    sys.exit()
index1 = (len(s)+3) // 2
s2 = s[index1:-1]
if s2 != s2[::-1]:
    print("No2")
    sys.exit()
print("Yes")

Fixed code:
# This file is a "Hello, world!" in Python language by CPython for wandbox.
import sys

s = input()
if s != s[::-1]:
    print("No")
    sys.exit()
index = (int)(len(s) - 1) // 2
s1 = s[0:index]
if s1 != s1[::-1]:
    print("No")
    sys.exit()
index1 = (len(s)+3) // 2
s2 = s[index1:-1]
if s2 != s2[::-1]:
    print("No")
    sys.exit()
print("Yes")
Buggy code:
S=input()
N=len(S)
S1=S[:(N-1)//2]
S2=S[(N+3)//2:]
if S==S[::-1] and S1=S1[::-1] and S2==S2[::-1]:
  print("Yes")
else:
  print("No")

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

end = (N-1)//2
stt = (N+3)//2

S1 = S[:end]
S2 = S[stt-1:]

if S == S[::-1] and S1 == S1[::-1] and S2 == S2[::-1]:
  print('Yes')
else:
  print('No')
Buggy code:
s = str(input())
t = s[::-1]
if(s != t):
    print("No")
    exit
c = ""
for i in range((len(s)-1)//2):
    c += s[i]
e = c[::-1]
if(e != c):
    print("No")
    exit()
r = ""
for i in range(((len(s)+3)//2)-1,len(s),1):
    r += s[i]
y = r[::-1]
if(r != y):
    print("No")
    exit()
"""
print("Yes")
print(s,t)
print(e,c)
print(r,y)

Fixed code:
s = str(input())
t = s[::-1]
if(s != t):
    print("No")
    exit()
c = ""
for i in range((len(s)-1)//2):
    c += s[i]
e = c[::-1]
if(e != c):
    print("No")
    exit()
r = ""
for i in range(((len(s)+3)//2)-1,len(s),1):
    r += s[i]
y = r[::-1]
if(r != y):
    print("No")
    exit()
print("Yes")
"""
print(s,t)
print(e,c)
print(r,y)
"""
Buggy code:
S=input()
ans=1

for i in range((len(S)-1)//2):
    
    if S[i]==S[len(S)-1-i]:
        ans*=1
    else:
        ans*=2

for j in range((len(S)-1)//2):
    
    if S[j]==S[(len(S)-1)//2-j-1]:
        ans*=1
    else:
        ans*=3

if ans==1:
    print("Yes")
else:
    print("NO")

Fixed code:
S=input()
ans=1

for i in range((len(S)-1)//2):
    
    if S[i]==S[len(S)-1-i]:
        ans*=1
    else:
        ans*=2

for j in range((len(S)-1)//2):
    
    if S[j]==S[(len(S)-1)//2-j-1]:
        ans*=1
    else:
        ans*=3

if ans==1:
    print("Yes")
else:
    print("No")
Buggy code:
s = list(input())
t = s[::-1]
n = len(s)
if s != t:
  print ('No')
  exit()
if n == 3:
  print('Yes')
  exit()
d = s[:int((n-1)/2)+1]
e = d[::-1]
#print(d,e)
r = s[int((n+3)/2-1):]
q = r[::-1]
#print(r,q)
if d != e:
  print('No')
  exit()
if r != q:
  print ('No')
  exit()

Fixed code:
s = list(input())
t = s[::-1]
n = len(s)
if s != t:
  print ('No')
  exit()
if n == 3:
  print('Yes')
  exit()
d = s[:int((n-1)/2)]
e = d[::-1]
#print(d,e)
r = s[int((n+3)/2-1):]
q = r[::-1]
#print(r,q)
if d != e:
  print('No')
  exit()
if r != q:
  print ('No')
  exit()
  
print('Yes')
Buggy code:
def check(s: str):
    return s == s[::-1]


s = input()
if check(s) and check(s[:(n-1)//2]):
    print("Yes")
else:
    print("No")


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


s = input()
n = len(s)
if check(s) and check(s[:(n-1)//2]):
    print("Yes")
else:
    print("No")
Buggy code:
#!usr/bin/env python3
from collections import defaultdict, deque
from heapq import heappush, heappop
from itertools import permutations
import sys
import math
import bisect


def LI(): return [int(x) for x in sys.stdin.readline().split()]


def I(): return int(sys.stdin.readline())


def LS(): return [list(x) for x in sys.stdin.readline().split()]


def S():
    res = list(sys.stdin.readline())
    if res[-1] == "\n":
        return res[:-1]
    return res


def IR(n):
    return [I() for i in range(n)]


def LIR(n):
    return [LI() for i in range(n)]


def SR(n):
    return [S() for i in range(n)]


def LSR(n):
    return [LS() for i in range(n)]


sys.setrecursionlimit(1000000)
mod = 1000000007


def solve():
    s = S()
    n = len(s)
    s1 = s[:(n-1)//2]
    s2 = s[((n+3)//2)-1:][::-1]
    s11 = s1[:(len(s1)-1)//2]
    s12 = s1[((len(s1)+3)//2)-1:][::-1]
    print(s1, s2, s11, s12)
    if s1 == s2 and s11 == s12:
        print('Yes')
    else:
        print('No')
    return


# Solve
if __name__ == "__main__":
    solve()


Fixed code:
#!usr/bin/env python3
from collections import defaultdict, deque
from heapq import heappush, heappop
from itertools import permutations
import sys
import math
import bisect


def LI(): return [int(x) for x in sys.stdin.readline().split()]


def I(): return int(sys.stdin.readline())


def LS(): return [list(x) for x in sys.stdin.readline().split()]


def S():
    res = list(sys.stdin.readline())
    if res[-1] == "\n":
        return res[:-1]
    return res


def IR(n):
    return [I() for i in range(n)]


def LIR(n):
    return [LI() for i in range(n)]


def SR(n):
    return [S() for i in range(n)]


def LSR(n):
    return [LS() for i in range(n)]


sys.setrecursionlimit(1000000)
mod = 1000000007


def solve():
    s = S()
    n = len(s)
    s1 = s[:(n-1)//2]
    s2 = s[((n+3)//2)-1:][::-1]
    if len(s1) % 2 == 0:
        s11 = s1[:len(s1)//2]
    else:
        s11 = s1[:(len(s1)-1)//2]
    s12 = s1[((len(s1)+3)//2)-1:][::-1]
    if s1 == s2 and s11 == s12:
        print('Yes')
    else:
        print('No')
    return


# Solve
if __name__ == "__main__":
    solve()
Buggy code:
s = input()
n = len(s)
top = s[:(n-1)//2]
bottom = s[(n+3)//2-1:]

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

Fixed code:
s = input()
n = len(s)
top = s[: (n - 1) // 2]
bottom = s[(n + 3) // 2 - 1 :]

if s == s[::-1] and top == top[::-1] and bottom == bottom[::-1]:
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
n = len(s)
c = 0
for i in range(int((n - 1)/2)):
  if (s[i] != s[n - 1 - i]):
    c = 1
x = int((n - 1)/2)
for i in range(int((x - 1)/2)):
  if (s[i] != s[x - 1 - i]):
    c = 1
if (c == 1):
  print("No")
else:
  print("Yes")
  


Fixed code:
s = input()
n = len(s)
c = 0
for i in range(int((n - 1)/2)):
  if (s[i] != s[n - 1 - i]):
    c = 1
x = int((n - 1)/2)
for i in range(x):
  if (s[i] != s[x - 1 - i]):
    c = 1
if (c == 1):
  print("No")
else:
  print("Yes")
Buggy code:
a = input()
for i in range(len(a) // 2):
    if a[i] != b[-(i+1)]:
        print("No")
        exit()
b = a[0:(len(a) - 1) // 2]
c = a[(len(a) + 3) // 2 - 1:len(a)]
for i in range(len(b) // 2):
    if b[i] != b[-(i+1)]:
        print("No")
        exit()
for i in range(len(c) // 2):
    if c[i] != c[-(i+1)]:
        print("No")
        exit()
print("Yes")

Fixed code:
a = input()
for i in range(len(a) // 2):
    if a[i] != a[-(i+1)]:
        print("No")
        exit()
b = a[0:(len(a) - 1) // 2]
c = a[(len(a) + 3) // 2 - 1:len(a)]
for i in range(len(b) // 2):
    if b[i] != b[-(i+1)]:
        print("No")
        exit()
for i in range(len(c) // 2):
    if c[i] != c[-(i+1)]:
        print("No")
        exit()
print("Yes")
Buggy code:
st=input()
def iskaibun(s):
  print(s)
  if(s==""):
      return 1;
  else:
      if(s[0]==s[-1]):
          return iskaibun(s[1:-1])
      else:
          return 0

l = len(st)
q = (l-1)//2
st1 = st[0:q]

st2 = st[q+1:]

if(st1 == st2[-1] and iskaibun(st1)==1 and iskaibun(st2)==1):
    print("Yes")
else:
    print("No")

Fixed code:
st=input()
def iskaibun(s):
  if(s==""):
      return 1;
  else:
      if(s[0]==s[-1]):
          return iskaibun(s[1:-1])
      else:
          return 0

l = len(st)
q = (l-1)//2
st1 = st[0:q]
st2 = st[q+1:]

if(st1 == st2[::-1] and iskaibun(st1)==1 and iskaibun(st2)==1):
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
l = len(s)
if list(s) != list(reversed(s)):
    print('No')
    exit()
if list(s[:l - 1 // 2]) != list(reversed(s[:l - 1 // 2])):
    print('No')
    exit()
if list(s[:l + 3 // 2]) != list(reversed(s[:l + 3 // 2])):
    print('No')
    exit()
print('Yes')

Fixed code:
s = input()
l = len(s)
if list(s) != list(reversed(s)):
    print('No')
    exit()
if list(s[:(l - 1) // 2]) != list(reversed(s[:(l - 1) // 2])):
    print('No')
    exit()
if list(s[(l + 3) // 2 -1:l]) != list(reversed(s[(l + 3) // 2 -1:l])):
    print('No')
    exit()
print('Yes')
Buggy code:
s = input()
n = len(s)
mae = (n-1)//2
usiro = (n+3)//2

for i in range(mae):
  if s[i] != s[mae-1-i]:
    print("No")
    exit()
    
for i in range(usiro-1, n):
  if s[i] != s[n-1+usiro-i]:
    print("No")
    exit()
print("Yes")

Fixed code:
s = input()
n = len(s)
mae = (n-1)//2
usiro = (n+3)//2

for i in range(mae):
  if s[i] != s[mae-1-i] or s[i] != s[usiro-1+i]:
    print("No")
    exit()
    
for i in range(usiro-1, n):
  if s[i] != s[n-1+usiro-1-i]:
    print("No")
    exit()
print("Yes")
Buggy code:
given = input()
n = len(given)
left, rite = given[:n//2], given[n//2+1:]
if given == given[::-1]:
    if left == left[::-1]:
        print("Yes")
    else:
        print("No")



Fixed code:
given = input()
n = len(given)
left, rite = given[:n//2], given[n//2+1:]
print("Yes" if left == left[::-1] and rite == rite[::-1] and given==given[::-1] else "No")
Buggy code:


S = input()

def is_kaibun(s):
    l = len(s)
    print('former', s[:int(l/2)])
    print('latter', s[:-(int(l/2))-1:-1])
    if s[:int(l/2)] == s[:-(int(l/2))-1:-1]:
        return True
    else:
        return False

if is_kaibun(S):
    if is_kaibun(S[:int((len(S)-1)/2)]):
        if is_kaibun(S[int((len(S)+3)/2)-1:]):
            print('Yes')
            exit()
print('No')

Fixed code:

S = input()

def is_kaibun(s):
    l = len(s)
    # print('former', s[:int(l/2)])
    # print('latter', s[:-(int(l/2))-1:-1])
    if s[:int(l/2)] == s[:-(int(l/2))-1:-1]:
        return True
    else:
        return False

if is_kaibun(S):
    if is_kaibun(S[:int((len(S)-1)/2)]):
        if is_kaibun(S[int((len(S)+3)/2)-1:]):
            print('Yes')
            exit()
print('No')
Buggy code:
def palindrome(S):
  for i in range(len(S)//2):
#    print(S[i],S[-(i+1)])
    if S[i] != S[-(i+1)]:
      return 0
  return 1
ans = "No"
S = input()
S1 = S[:(len(S)-1)//2]
S1 = S[(len(S)+3)//2:]
if palindrome(S) == 1:
  if palindrome(S1) == 1:
    if palindrome(S2) == 1:
      ans == "Yes"
print(ans)

Fixed code:
def palindrome(S):
  for i in range(len(S)//2):
#    print(S[i],S[-(i+1)])
    if S[i] != S[-(i+1)]:
      return 0
  return 1
ans = "No"
S = input()
S1 = S[:(len(S)-1)//2]
S2 = S[(len(S)+1)//2:]
#print(palindrome(S))
#print(palindrome(S1))
#print(palindrome(S2))

if palindrome(S) == 1:
  if palindrome(S1) == 1:
    if palindrome(S2) == 1:
      ans = "Yes"
print(ans)
Buggy code:
s=input()
n=len(s)+1
a=s[0:int((n-1)/2)]
b=s[int((n+3)/2)-1:n-1]
print(a,b)
if a==b:
  print('Yes')
else:
  print('No')

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

s3 = s[(n+3)//2-1:]
s4 = s3[::-1]

s0 = s[::-1]

print(s1, s2)
print(s3, s4)

if s1 == s2 and s3 == s4 and s == s0:
    print('Yes')
else:
    print('No')

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

s3 = s[(n+3)//2-1:]
s4 = s3[::-1]

s0 = s[::-1]

if s1 == s2 and s3 == s4 and s == s0:
    print('Yes')
else:
    print('No')
Buggy code:
S = list(input())
N = len(S)
M = (N-1)//2
S1 = S[:(N-1)//2]
S2 = S[(N+3)//2-1:]
S2.reverse()
S11 = S1[:M//2]
S12 = S1[(M+3)//2-1:]
print(S11)
print(S12)
S12.reverse()

if S1 == S2 and S11 == S12:
    print('Yes')
else:
    print('No')

Fixed code:
S = list(input())
N = len(S)
M = (N-1)//2
S1 = S[:(N-1)//2]
S2 = S[(N+1)//2:]
S2.reverse()
S11 = S1[:M//2]
S12 = S1[M//2 + M%2:]
S12.reverse()

if S1 == S2 and S11 == S12:
    print('Yes')
else:
    print('No')
Buggy code:
moji = list(input())
length = len(moji)
count = 0
m = n = 0

for i in range(int(length/2-1)):
    if moji[i] != moji[length-i-1]:
        count += 1
k = (length-1)//2-1
for i in range(int((length-1)/2-1)):
    if moji[i] != moji[k-n]:
        count += 1
    n += 1
n = (length+3-1)/2 
for n in range(int(length-1)):
    if moji[n] != moji[length-1-m]:
        count += 1
    m += 1
if count == 0:
    print("Yes")
else:
    print(count)

Fixed code:
moji = list(input())
length = len(moji)
count = 0
m = n = 0

for i in range(int(length/2-1)):
    if moji[i] != moji[length-i-1]:
        count += 1
k = (length-1)//2-1
for i in range(int((length-1)/2-1)):
    if moji[i] != moji[k-n]:
        count += 1
    n += 1
n = (length+3-1)/2 
for n in range(int(length-1)):
    if moji[n] != moji[length-1-m]:
        count += 1
    m += 1
if count == 0:
    print("Yes")
else:
    print("No")
Buggy code:
seq = input()
if seq == seq[::-1]:
    if seq[:int((len(seq) - 1) / 2)] == seq[:int((len(seq) - 1) / 2)][::-1]:
        if seq[int((len(seq) + 3) / 2) - 1:] == seq[int((len(seq) + 3) / 2) - 1:][::-1]:
            print("Yes")
else:
    print("No")

Fixed code:
seq = input()
if seq == seq[::-1]:
    if seq[:int((len(seq) - 1) / 2)] == seq[:int((len(seq) - 1) / 2)][::-1]:
        if seq[int((len(seq) + 3) / 2) - 1:] == seq[int((len(seq) + 3) / 2) - 1:][::-1]:
            # print(seq[int((len(seq) + 3) / 2) - 1:])
            print("Yes")
        else:
            print("No")
    else:
        print("No")
else:
    print("No")
Buggy code:
S=str(input())
import sys
t=0
lista=[]
for i in range(99):
  try:
    lista.append(S[i])
    t=t+1
  except IndexError:
    break
print (t)
u=t//2
v=u//2+1
p=1
for i in range(v):
  if S[i]==S[u-i-1]:
    p=p*1
  else:
    print ('No')
    sys.exit()
for j in range(v):
  if S[u+j+1]==S[t-1-j]:
    p=p*1
  else:
    print ('No')
    sys.exit()
if t>3:
  print ('Yes')
else:
  if S[0]=S[2]:
    print ('Yes')
  else:
    print ('No')

Fixed code:
S=str(input())
import sys
t=0
lista=[]
for i in range(99):
    try:
        lista.append(S[i])
        t=t+1
    except IndexError:
        break
u=t//2
v=u//2+1
p=1
for i in range(v):
    if S[i]==S[u-i-1] and S[u-i-1]==S[u+i+1] and S[u+i+1]==S[t-1-i]:
        p=p*1
    else:
        print ('No')
        sys.exit()
print ('Yes')
Buggy code:
def checkStr(str):
  n = len(str)
  if n % 2 == 0:
    for i in range(int(n/2)):
      if str[i] != str[n-i-1]:
        return False
  else:
    for i in range(int((n-1)/2)):
      if str[i] != str[n-i-1]:
        return False
  return True


s = input()
print(checkStr(s[0:int((len(s)-1)/2)]) and checkStr(s) and checkStr(s[int((len(s)+3)/2)-1:]))

Fixed code:
def checkStr(str):
  n = len(str)
  if n % 2 == 0:
    for i in range(int(n/2)):
      if str[i] != str[n-i-1]:
        return False
  else:
    for i in range(int((n-1)/2)):
      if str[i] != str[n-i-1]:
        return False
  return True


s = input()
if checkStr(s[0:int((len(s)-1)/2)]) and checkStr(s) and checkStr(s[int((len(s)+3)/2)-1:]):
  print('Yes')
else:
  print('No')
Buggy code:
s=input()
n=len(s)

def circ_check(s):
    s_rev=s[::-1]
    n=len(s)
    print(s,s_rev[0:int((n-1)/2)],s[0:int((n-1)/2)])
    if s_rev[0:int((n-1)/2)] ==s[0:int((n-1)/2)]:
        s_check=1
    else:
        s_check=0
    return(s_check) 

    
if int((n-1)/2)%2==1:
    res1=circ_check(s)
    res2=circ_check(s[0:int((n-1)/2)])
    res3=circ_check(s[int((n-1)/2+1):len(s)])
    if res1*res2*res3==1:
        print('Yes')
    else:
        print('No')
else:
    print('No')

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

def circ_check(s):
    s_rev=s[::-1]
    n=len(s)
    if n%2==1:
        half_n=int((n-1)/2)
    else:
        half_n=int(n/2)
    if s_rev[0:half_n] ==s[0:half_n]:
        s_check=1
    else:
        s_check=0
    return(s_check) 


res1=circ_check(s)
res2=circ_check(s[0:int((n-1)/2)])
res3=circ_check(s[int((n-1)/2+1):len(s)])
if res1*res2*res3==1:
    print('Yes')
else:
    print('No')