qyliang/CodeNanoFix huggingface dataset:
Buggy code:
import sys
sys.setrecursionlimit(300000)

def I(): return int(sys.stdin.readline())
def MI(): return map(int, sys.stdin.readline().split())
def LMI(): return list(map(int, sys.stdin.readline().split()))
MOD = 10 ** 9 + 7
INF = float('inf')


S = input()
print('Yes' if len(set(list(S))) == len(S) else 'No')


Fixed code:
import sys
sys.setrecursionlimit(300000)

def I(): return int(sys.stdin.readline())
def MI(): return map(int, sys.stdin.readline().split())
def LMI(): return list(map(int, sys.stdin.readline().split()))
MOD = 10 ** 9 + 7
INF = float('inf')


S = input()
print('yes' if len(set(list(S))) == len(S) else 'no')
Buggy code:
s=list(input());"yneos"[len(s)>len(set(s))::2]

Fixed code:
s=list(input());print("yneos"[len(s)>len(set(s))::2])
Buggy code:
S = input()
count = len(S)
a = 0
for i in range(count):
    if S[i] in S[i+1:]:
        print(S[i+1:])
        a = a+1
    else:
        pass
if a>0:
    print("no")
else:
    print("yes")


Fixed code:
S = input()
count = len(S)
a = 0
for i in range(count):
    if S[i] in S[i+1:]:
        a = a+1
    else:
        pass
if a>0:
    print("no")
else:
    print("yes")
Buggy code:
s = input()

str=[]
for char in s:
    str.append(char)

str.sort()

for char in str:
    if str.count(char) > 1:
        print "no"
        break
else:
    print "yes"


Fixed code:
s = input()

str=[]
for char in s:
    str.append(char)

str.sort()

for char in str:
    if str.count(char) > 1:
        print("no")
        break
else:
    print("yes")
Buggy code:
S=str(input())
no = False
for i in range(len(S)):
  for k in range(i+1,len(S)):
    if S[i] == S[k]:
      no == True
      break
if no:
  print('no')
else:
  print('yes')

Fixed code:
S=str(input())
no = False
for i in range(len(S)):
  for k in range(i+1,len(S)):
    if S[i] == S[k]:
      no = True
      break
if no:
  print('no')
else:
  print('yes')
Buggy code:
s = input()
ss = set(s)s = input()
li_s = list(s) 
li_ss= list(set(s)) 

if len(li_s)==len(li_ss):
  print("yes")
else:
  print("no")

Fixed code:
s = input()
li_s = list(s) 
li_ss= list(set(s)) 
 
if len(li_s)==len(li_ss):
  print("yes")
else:
  print("no")
Buggy code:
a = input()
ans = 'no'
for i in a:
    if a.count(i) >= 2:
        ans = 'yes'
print(ans)

Fixed code:
a = input()
ans = 'yes'
for i in a:
    if a.count(i) >= 2:
        ans = 'no'
print(ans)
Buggy code:
s = list(str(input()))
s1 = list(set(s1))

print('yes' if len(s)==len(s1) else 'no')

Fixed code:
s = list(str(input()))
s1 = list(set(s))

print('yes' if len(s)==len(s1) else 'no')
Buggy code:
import sys
def input(): return sys.stdin.readline().strip()


def main():
    s = input()
    d = set()
    for c in s:
        if c in d:
            print("no")
            return
    print("yes")

if __name__ == "__main__":
    main()


Fixed code:
import sys
def input(): return sys.stdin.readline().strip()


def main():
    s = input()
    d = set()
    for c in s:
        if c in d:
            print("no")
            return
        d.add(c)
    print("yes")

if __name__ == "__main__":
    main()
Buggy code:
s = input()
if s == str((set(s)):
    print("yes")
else:
    print("no")

Fixed code:
s = str(input())
if len(s) == len(set(s)):
    print("yes")
else:
    print("no")
Buggy code:
s = list(input())
if s == list(set(s)):
    print("yes")
else:
    print("no")

Fixed code:
s = input()
if sorted(list(s)) == sorted(list((set(s)))):
    print("yes")
else:
    print("no")
Buggy code:
st = input()
tmp = []
for s in st:
    tmp.append(s)
if tmp == set(tmp):
    print('yes')
else:
    print('no')

Fixed code:
st = input()
tmp = []
for s in st:
    tmp.append(s)
if len(tmp) == len(set(tmp)):
    print('yes')
else:
    print('no')
Buggy code:
def hantei(s):
    return len(s) == len(set(s))

def main():
    s = input()
    s = list(s)

    if hantei(s) == True:
        print('yes') 
    else:
        print('No')
        
if __name__ == '__main__':
    main()

Fixed code:
def hantei(s):
    return len(s) == len(set(s))

def main():
    s = input()
    s = list(s)

    if hantei(s) == True:
        print('yes') 
    else:
        print('no')
        
if __name__ == '__main__':
    main()
Buggy code:
S = list(input())
s = set(S)

if len(s) == len(S):
    print('yes')
else:
    prirnt('no')

Fixed code:
S = list(input())

s = set(S)

if len(s) == len(S):
    print("yes")
else:
    print("no")
Buggy code:
S = input()

word = ['qwertyuiopasdfghjklzxcvbnm']

for i in range(len(word)):
    if S.count(word[i]) > 1:
        print('no')
        exit()
        
print('yes')

Fixed code:
S = input()

word = 'qwertyuiopasdfghjklzxcvbnm'

for i in range(len(word)):
    if S.count(word[i]) > 1:
        print('no')
        exit()
        
print('yes')
Buggy code:
from collections import Counter
lst = list(input())
c = sorted(Counter(lst).values(), reverse=True)
if c[0]==0: print("yes")
else: print("no")

Fixed code:
from collections import Counter
lst = list(input())
c = sorted(Counter(lst).values(), reverse=True)
if c[0]==1: print("yes")
else: print("no")
Buggy code:
print("no"if len(set(input()))!=len(input()) else"yes")

Fixed code:
a=input()
print("no"if len(set(a))!=len(a)else"yes")
Buggy code:
S = list(input())
S.sort()
N = len(S)
judge = "yes"
for i in range(N - 1):
	if S[i] == S[i + 1]:
		judge = "yes"
		break

print(judge)

Fixed code:
S = list(input())
S.sort()
N = len(S)
judge = "yes"
for i in range(N - 1):
	if S[i] == S[i + 1]:
		judge = "no"
		break

print(judge)
Buggy code:
S = list(str(input()))
l = []

for i in range(len(S)):
  if not S[i] in l:
    l.append(S)
  else:
    print('no')
  if i == len(S) - 1:
    print('yes')

Fixed code:
S = list(str(input()))
l = []
 
for i in range(len(S)):
  if not S[i] in l:
    l.append(S[i])
  else:
    print('no')
    break
  if i == len(S) - 1:
    print('yes')
Buggy code:
S = input()
S = list(S)
l = set(S)

if S == l:
    print('yes')
else:
    print('no')


Fixed code:
S = input()
S = list(S)
l = set(S)

if len(S) == len(l):
    print('yes')
else:
    print('no')
Buggy code:
s = input()
t = set(s)
print("yes" if len(s) == set(t) else "no")

Fixed code:
s = input()
t = set(s)
if len(s) == len(t):
    print("yes")
else:
    print("no")
Buggy code:
S=input()
if len(S)==len(set(list(S))):
  print('yes'):
else:
  print('no')

Fixed code:
S=list(input())

if len(S)==len(set(S)):
    print("yes")
else :
    print("no")
Buggy code:
s = list(input())
s.sort()
flag = True
for i in range(len(s) - 1):
    if s[i] == [i + 1]:
        flag = False

if flag:
    print("yes")
else:
    print("no")


Fixed code:
s = list(input())
s.sort()
flag = True
for i in range(len(s) - 1):
    if s[i] == s[i + 1]:
        flag = False

if flag:
    print("yes")
else:
    print("no")
Buggy code:
S= input()
k=len(S)
c=0
for i in range(k):
    for j in range(k-i):
        if S[i]!=S[i+j]:
            c+=1
print(c)
if c==k*(k-1)/2:
    print("yes")
else:
    print("No")

Fixed code:
S=input()
k=len(S)
c=0
for i in range(k):
    for j in range(k-i):
        if S[i]!=S[i+j]:
            c+=1
if c==k*(k-1)/2:
    print('yes')
else:
    print('no')
Buggy code:
s=input()
print("yes" if len(s)==len(set(s) else "no")

Fixed code:
s = input()
if len(s) == len(set(s)):
  print('yes')
else :
  print('no')
Buggy code:
s = list(input())
t = set(s)
print(s)
print(t)
if len(s) == len(t):
	print('yes')
else:
	print('no')

Fixed code:
s = list(input())
t = set(s)
if len(s) == len(t):
	print('yes')
else:
	print('no')
Buggy code:
s=input()
x={}
for i in s:
  if i in x:
    print('no')
    exit()
  else:
    x.add(i)
print('yes')

Fixed code:
s=input()
x={1}
for i in s:
  if i in x:
    print('no')
    exit()
  else:
    x.add(i)
print('yes')
Buggy code:
S=list(input())

sset=set()
for s in S:
  sset.add(s)
  
if len(sset)==26:
  print("yes")
else:
  print("no")

Fixed code:
S=list(input())

sset=set()
for s in S:
  sset.add(s)
  
if len(sset)==len(S):
  print("yes")
else:
  print("no")
Buggy code:
s=input()
for i in range(len(s)-1):
  for j in range(i+1,len(s)+1):
    if A[i]==A[j]:
      print("no")
      exit()
print("yes")

Fixed code:
s=input()
for i in range(len(s)-1):
  for j in range(i+1,len(s)):
    if s[i]==s[j]:
      print("no")
      exit()
print("yes")
Buggy code:
# -*- coding: utf-8 -*-


def main():
    """Function."""
    s = str(input())

    check = set()
    for i in range(s):
        check.add(s[i])

    if len(s) != len(s):
        print("no")
    else:
        print("yes")


if __name__ == "__main__":
    main()


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


def main():
    """Function."""
    s = str(input())
    check = set()

    for i in range(len(s)):
        check.add(s[i])

    if len(s) != len(check):
        print("no")
    else:
        print("yes")


if __name__ == "__main__":
    main()
Buggy code:
s = input()
a = [i for i in s]
s = sorted(a)
b = 1
for i in range(len(s)-1):
  if s[i] == s[i+1]:
    b = 0
    break
print("yes") if b = 1 else print("no")


  

Fixed code:
s = input()
a = [i for i in s]
s = sorted(a)
b = 1
for i in range(len(s)-1):
  if s[i] == s[i+1]:
    b = 0
print("yes") if b == 1 else print("no")
Buggy code:
s = input()
print('yes' if list(s) == set(s) else 'no')

Fixed code:
s = input()
print('yes' if len(list(s)) == len(set(s)) else 'no')
Buggy code:
def check(s):
  for i in range(1, len(s)):
    if i - 1 in s[i:]:
      return "no"
  return "yes"

s = input()
print(check(s))

Fixed code:
def varied(s):
	for i in range(1, len(s)):
		if s[i-1] in s[i:]:
			return "no"
	return "yes"

s = input()
print(varied(s))
Buggy code:
s = input()
for i in s:
    if s.count(i) >= 2:
        print("no")
    else:
        print("yes")

Fixed code:
s = input()
for i in s:
    if s.count(i) >= 2:
        print('no')
        exit()
else:
	print('yes')
Buggy code:
s = input()
a = 0
for i in range(len(s)):
  a = a + s.count(s[i])
if a = len(s):
  print("yes")
else:
  print("no")

Fixed code:
s = input()
a = 0
for i in range(len(s)):
  a = a + s.count(s[i])
if a == len(s):
  print("yes")
else:
  print("no")
Buggy code:
S=list(input())
S.sort()
print (S)
nd=0
i=0
while nd==0 and i<len(S)-1:
    if S[i]==S[i+1]:
         nd=1
    i+=1
if nd==1:
    print ("no")
else:
    print ("yes")

Fixed code:
S=list(input())
S.sort()
nd=0
i=0
while nd==0 and i<len(S)-1:
    if S[i]==S[i+1]:
         nd=1
    i+=1
if nd==1:
    print ("no")
else:
    print ("yes")
Buggy code:
A=input()
B=[]
for i in range(len(A)):
    B.append(A[i])
    B.sort()
flg=0
for i in range(len(A)-1):
    if B[i]==B[i+1]:
        flg=+1
if flg>0:
    print("yes")
else:
    print("no")

Fixed code:
A=input()
B=[]
for i in range(len(A)):
    B.append(A[i])
    B.sort()
flg=0
for i in range(len(A)-1):
    if B[i]==B[i+1]:
        flg=+1
if flg>0:
    print("no")
else:
    print("yes")
Buggy code:
S = input()

import collections

c = collections.Counter(list(S))

ans = "yes"
for i in c.values():
    print(i)
    if i == 1:
        pass
    else:
        ans = "no"
        break

print(ans)

Fixed code:
S = input()

import collections

c = collections.Counter(list(S))

ans = "yes"
for i in c.values():
    if i == 1:
        pass
    else:
        ans = "no"
        break

print(ans)
Buggy code:
s = input()
letters = []
ans = 'no'
for i in s:
  if i in letters:
    ans = 'yes'
    break
  else:
    letters.append(i)
print(ans)

Fixed code:
s = input()
ans = 'yes'
ls = []
for i in s:
    if i in ls:
        ans = 'no'
        break
    else:
        ls.append(i)
print(ans)
Buggy code:
import sys
input = sys.stdin.readline

s = input().rstrip()
print("yes" if set(s) == s else "no")

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

s = input().rstrip()
print("yes" if len(set(s)) == len(s) else "no")
Buggy code:
sl = list(input())
s2 = set(s1)
if len(s1) == len(s2):
  print("yes")
elif len(s1) != len(s2):
  print("no")


Fixed code:
s1 = list(input())
s2 = set(s1)
if len(s1) == len(s2):
  print("yes")
elif len(s1) != len(s2):
  print("no")
Buggy code:
# -*- coding:utf-8 -*-

def solve():
    S = input()

    for i in range(len(S)):
        target = S[i]
        for j in range(i+1, len(S)):
            if target != S[j]:
                continue
            print("no")
    print("yes")


if __name__ == "__main__":
    solve()


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

def solve():
    S = input()

    for i in range(len(S)):
        target = S[i]
        for j in range(i+1, len(S)):
            if target != S[j]:
                continue
            print("no")
            return
    print("yes")


if __name__ == "__main__":
    solve()
Buggy code:
s,temp = list(input()),[]
for i in range(len(s)):
    if s in temp:
        print("no")
        exit()
    else:
        temp.append(s[i])
print("yes")

Fixed code:
s,temp = list(input()),[]
for i in range(len(s)):
    if s[i] in temp:
        print("no")
        exit()
    else:
        temp.append(s[i])
print("yes")
Buggy code:
u = input()
for i in range(len(u)):
  for j in range(i,len(u)):
    if u[i]==u[j]:
      print("no")
      exit()
print("yes")

Fixed code:
u = input()
for i in range(len(u)):
  for j in range(i+1,len(u)):
    if u[i]==u[j]:
      print("no")
      exit()
print("yes")
Buggy code:
s = str(input())
if len(s)==(len(set(s)):
    ans = "yes"
else:
    ans = "no"
print(ans)

Fixed code:
s = str(input())
if len(s)==len(set(s)):
    ans = "yes"
else:
    ans = "no"
print(ans)
Buggy code:
S = input()

li = set()
for i in len(S):
  li.add(S[i])

if len(S) == len(li):
  print("yes")
else:
  print("no")

Fixed code:
S = input()

li = set()
for i in range(len(S)):
  li.add(S[i])

if len(S) == len(li):
  print("yes")
else:
  print("no")
Buggy code:
s=input()
from collections import Counter
c=Counter(s)
if most_common(c)[0]>1:
  print("no")
else:
  print("yes")

Fixed code:
s=input()
from collections import Counter
c=Counter(s)
if c.most_common()[0][1]>1:
  print("no")
else:
  print("yes")
Buggy code:
a= input().strip()
b=set(a)
if len(a)==len(b):
    print("yes")
else:
    print("no")
print(len(a),len(b))

Fixed code:
a= input().strip()
b=set(a)
if len(a)==len(b):
    print("yes")
else:
    print("no")
Buggy code:
l = list(input())
strlen = l.__len__()
"no" if strlen - list(set(l)).__len__() else "yes"

Fixed code:
l = list(input())
strlen = l.__len__()
print("no" if strlen - list(set(l)).__len__() else "yes")
Buggy code:
# -*- coding: utf-8 -*-

S = input()
list(S)
boolean = True
for i in range(len(S)):
    for j in range(i+1, len(S)):
        if i == j:
            boolean = False

[print('no') if boolean == True else print('yes')]

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

S = input()
list(S)
boolean = True
for i in range(len(S)):
    for j in range(i+1, len(S)):
        if S[i] == S[j]:
            boolean = False

[print('no') if boolean == False else print('yes')]
Buggy code:
S=[for i in input()]
print('yes' if len(S)==len(set(S)) else 'no')


Fixed code:
S = [i for i in input()]
print('yes' if len(S) == len(set(S)) else 'no')
Buggy code:
S = list(S)
print('yes' if len(set(S)) == len(S) else 'no')

Fixed code:
S=list(input())
print("yes"if len(S)==len(set(S))else"no")
Buggy code:
s = list(input())
print("yes" if s == list(set(s)) else "no")


Fixed code:
s = list(input())
print("yes" if len(s) == len(list(set(s))) else "no")
Buggy code:
s = [x for x in input()]
print('yes' if all(s.count(c)==1 for c in s else 'no')

Fixed code:
s = [x for x in input()]
print('yes' if all([(s.count(c)==1) for c in s])  else 'no')
Buggy code:
from collections import Counter

S = list(input())

c = Counter(S)

for i in c.most_common():
    if i[1] > 1:
        print("no")

print("yes")

Fixed code:
from collections import Counter

S = list(input())

c = Counter(S)

for i in c.most_common():
    if i[1] > 1:
        print("no")
        exit()

print("yes")
Buggy code:
s = input()
end = []
for i in s:
    if (end.count(i)==0):
        end.append(i)
    else:
        print("no")
        exit()
print("Yes")

Fixed code:
s = input()
end = []
for i in s:
    if (end.count(i)==0):
        end.append(i)
    else:
        print("no")
        exit()
print("yes")
Buggy code:
s = input()
print("no" if len(s) - set(s) == 0 else "yes")

Fixed code:
s = input()
print("no" if len(s) - len(set(s)) else "yes")
Buggy code:
s = [i for i in input()]
print("yes" len(s) == len(set(s)) else "no")

Fixed code:
s = [i for i in input()]
print("yes" if len(s) == len(set(s)) else "no")
Buggy code:
def varied(S: str)->bool:
    d = {}
    for c in S:
        if c in S:
            return False
        d[c] = True
    return True


if __name__ == "__main__":
    S = input()
    yes = varied(S)
    print('yes' if yes else 'no')


Fixed code:
def varied(S: str)->bool:
    d = {}
    for c in S:
        if c in d:
            return False
        d[c] = True
    return True


if __name__ == "__main__":
    S = input()
    yes = varied(S)
    print('yes' if yes else 'no')
Buggy code:
S = list(input())
sum = len(S)
S.sort()
suma = 1
for i in range(sum-1) :
    if S[i] != S[i+1] :
        suma +=1
if sum == suma :
    print("yes")
else :
    print("No")

Fixed code:
S = list(input())
sum = len(S)
S.sort()
suma = 1
for i in range(sum-1) :
    if S[i] != S[i+1] :
        suma +=1
if sum == suma :
    print("yes")
else :
    print("no")
Buggy code:
s = sorted(input())
x = len(s)
for i in range(s-1):
  if s[i+1] ==s[i]:
    print('no')
    exit()
print('yes') 

Fixed code:
s = sorted(input())
x = len(s)
for i in range(x-1):
  if s[i+1] ==s[i]:
    print('no')
    exit()
print('yes')
Buggy code:
s = str(input())
S = []
for m in s:
    S.append(m)
set_S = set(S)
if len(s) == len(set_S):
    ans = 'yes'
else:
    ans = 'no'


Fixed code:
s = str(input())
S = []
for m in s:
    S.append(m)
set_S = set(S)
if len(s) == len(set_S):
    print('yes')
else:
    print('no')
Buggy code:
s = list(input())
n = set(s)
ans = 'yes'
for nn in n:
    if s.count(nn):
        ans = 'no'
        break
print(ans)

Fixed code:
s = list(input())
n = set(s)
ans = 'yes'
for nn in n:
    if s.count(nn) != 1:
        ans = 'no'
        break
print(ans)
Buggy code:
import  collections
dic=collections.Counter(list(input()))
if max((dic.values()))==1:
	print('yes')
else:print('No')	


Fixed code:
import  collections
dic=collections.Counter(list(input()))
if max((dic.values()))==1:
	print('yes')
else:print('no')
Buggy code:
s = input()
if len(s)==set(s):
  print('yes')
else:
  print('no)

Fixed code:
s = input()
print("yes" if len(s)==len(set(s)) else "no")
Buggy code:
s=input()

k=list(s)
m=list(set(l))

if len(k)==len(m):
  print("yes")
else:
  print("no")

Fixed code:
s=input()

k=list(s)
m=list(set(s))

if len(k)==len(m):
  print("yes")
else:
  print("no")
Buggy code:
s = str(input())
dp=0
for i in range(len(s)):
    for j in range(len(s)):
        if s[i] == s[j]:
            dp += 1

if dp == 0:
    print("yes")
else:
    print("no")

Fixed code:
s = str(input())
dp=0
for i in range(len(s)-1):
    for j in range(i+1,len(s)):
        if s[i] == s[j]:
            dp += 1

if dp == 0:
    print("yes")
else:
    print("no")
Buggy code:
S = input()
alpha = lambda c:chr(c+96)
List = []
for i in range(len(S)):
  tmp = S[i]
  List.append[tmp]
for k in range(1,27):
  if(List.count(alpha(k)) <= 1):
    pass
  else:
    print("no")
    exit()
print("yes")

Fixed code:
S = input()
alpha = lambda c:chr(c+96)
List = []
for i in range(len(S)):
  tmp = S[i]
  List.append(tmp)
for k in range(1,27):
  if(List.count(alpha(k)) <= 1):
    pass
  else:
    print("no")
    exit()
print("yes")
Buggy code:
#!/usr/bin/env python
from __future__ import division, print_function
import sys


def main():
    d = set()
    s = sys.stdin.readline().strip()
    for c in s:
        if c in d:
            print("no")
            return
        d.add(c)
        print(d)
    print("yes")


if __name__ == '__main__':
    main()


Fixed code:
#!/usr/bin/env python
from __future__ import division, print_function
import sys


def main():
    d = set()
    s = sys.stdin.readline().strip()
    for c in s:
        if c in d:
            print("no")
            return
        d.add(c)
    print("yes")


if __name__ == '__main__':
    main()
Buggy code:
l = list(map(str, input()))

if len([x for x in set(l) if l.count(x) > 1]) > 0:
  print('yes')
else:
  print('no')

Fixed code:
l = list(map(str, input()))

if len([x for x in set(l) if l.count(x) > 1]) > 0:
  print('no')
else:
  print('yes')
Buggy code:

S = input()

print("yes" if set(len(S))==len(S) else "no")


Fixed code:

S = input()

print("yes" if len(set(S))==len(S) else "no")
Buggy code:
s=input()
import collections
c = collections.Counter(l)

for i in c.values():
  if i!=1:
    print("no")
    exit()
print("yes")

Fixed code:
import collections
s = input()
c = collections.Counter(s)
for i in c.values():
    if i != 1:
        print('no')
        exit()
print('yes')
Buggy code:
s = list(str(input()))
for i in range(len(s)-1):
    for j in range(i,len(s)):
        if s[i] == s[j]:
            print('no')
            exit(0)
print('yes')

Fixed code:
s = list(str(input()))
for i in range(len(s)-1):
    for j in range(i+1,len(s)):
        if s[i] == s[j]:
            print('no')
            exit(0)
print('yes')
Buggy code:
from collections import Counter
l = list(input())
c = Counter(l)
if max(c) >= 2:
    print('yes')
else:
    print('no')

Fixed code:
from collections import Counter
l = list(input())
c = Counter(l)
if max(c.values()) >= 2:
    print('no')
else:
    print('yes')
Buggy code:
s=input()
if list(s)==list(set(list(s))):
  print('yes')
else:
  print('no')

Fixed code:
s=input()
if len(s)==len(set(list(s))):
  print('yes')
else:
  print('no')
Buggy code:
s=list(input())
li=[]
non=False
for c in s:
  if c in li:
    non=True
    break
    
if non:
  print("yes")
  
else:
  print("no")

Fixed code:
s=list(input())
li=[]
non=False
for c in s:
  if c in li:
    non=True
    break
  li.append(c)
    
if non:
  print("no")
  
else:
  print("yes")
Buggy code:
a=input()
b=[]
c=0
for i in range(len(a)):
  b.append(a[i])
b.sort()
for i in range(len(a-1)):
  if b[i]==b[i+1]:
    c=c+1
if c==0:
  print("yes")
else:
  print("no")

Fixed code:
a=input()
b=[]
c=0
for i in range(len(a)):
  b.append(a[i])
b.sort()
for i in range(len(a)-1):
  if b[i]==b[i+1]:
    c=c+1
if c==0:
  print("yes")
else:
  print("no")
Buggy code:
S = input()
S_s = set(S)
print(S_s)

if len(S)==len(S_s):
    print("yes")
else:
    print("no")

Fixed code:
S = input()
S_s = set(S)

if len(S)==len(S_s):
    print("yes")
else:
    print("no")
Buggy code:
s=input()
for i in range(len(s)):
  if s.count(s[i])!=1:
    print('no')
else:
  print('yes')

Fixed code:
s=input()
for i in range(len(s)):
  if s.count(s[i])!=1:
    print('no')
    break
else:
  print('yes')
Buggy code:
s = input()
word = []

for i in s:
    if (i not in word):
        word.append(i)
    else:
        print('no')

print('yes')


Fixed code:
s = input()
word = []

for i in s:
    if (i not in word):
        word.append(i)
    else:
        print('no')
        exit()

print('yes')
Buggy code:
# B - Varied
S = str(input())

if set(S) == len(S):
    print('yes')
else:
    print('no')

Fixed code:
# B - Varied
S = str(input())

if len(set(S)) == len(S):
    print('yes')
else:
    print('no')
Buggy code:
#ABC063B
S = input()
all_dif = True
for i in range(len(S)):
    for j in range(i+1, len(S)):
        if S[i] == S[i+j]:
            all_dif = False
if all_dif:
    print("yes")
else:
    print("no")

Fixed code:
#ABC063B
S = input()
all_dif = True
for i in range(len(S)):
    if i == len(S)-1:
        break
    for j in range(1,len(S)-i):
        if S[i] == S[i+j]:
            all_dif = False
if all_dif:
    print("yes")
else:
    print("no")
Buggy code:
s=str(input())
x=0
for i in range(len(s)):
  if s.count(s[i])==0:
    x+=1
if x==len(s):
  print('yes')
else:
  print('no')
  

Fixed code:
s=str(input())
x=0
for i in range(len(s)):
  if s.count(s[i])==1:
    x+=1
if x==len(s):
  print('yes')
else:
  print('no')
Buggy code:
S=input
print("yes" if len(S)=len(set(S)) else "no")

Fixed code:
S = input()
print('yes' if len(set(S))==len(S) else 'no')
Buggy code:
s=input()
S=[]
for i in range(len(s)):
  S.append(s[i])
print("yes" if len(setS))==len(s) else "No")

Fixed code:
s=input()
S=[]
for i in range(len(s)):
  S.append(s[i])
print("yes" if len(set(S))==len(s) else "no")