qyliang/CodeNanoFix huggingface dataset:
Buggy code:
N = int(input())
S = N
B = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
A = []
li = [0]
li2 = []
for i in range (14):
    li.append(26**(1+i))
a = 0
for j in range (14):
    a += li[j]
    li2.append(a)
k = 0
while(N > li2[k]):
    k+=1

S -= (li2[k-1] +1)
amari = S % 26
K = S
for l in range (k):
    A.append(B[(K//li[k - l])])
    print(li[k-l])

    K = K % li[k - l]
A.append(B[amari])
print(''.join(A[1:]))




Fixed code:
N = int(input())
S = N
B = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
A = []
li = [0]
li2 = []
for i in range (14):
    li.append(26**(1+i))
a = 0
for j in range (14):
    a += li[j]
    li2.append(a)
k = 0
while(N > li2[k]):
    k+=1

S -= (li2[k-1] +1)
amari = S % 26
K = S
for l in range (k):
    A.append(B[(K//li[k - l])])

    K = K % li[k - l]
A.append(B[amari])
print(''.join(A[1:]))
Buggy code:
N=int(input())
chars="Xabcdefghijklmnopqrstuvwxyz")
res=""
n_rem=N
while True:
  x=n_rem%26
  if x==0:
    x=26
  res+=chars[x]
  n_rem-=x
  if n_rem==0:
    break
  n_rem//=26
print(res[::-1])
  
    

Fixed code:
N=int(input())
chars="Xabcdefghijklmnopqrstuvwxyz"
res=""
n_rem=N
while True:
  x=n_rem%26
  if x==0:
    x=26
  res+=chars[x]
  n_rem-=x
  if n_rem==0:
    break
  n_rem//=26
print(res[::-1])
Buggy code:
al = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
N = int(input())
M = N
v = 1
while True:
    if(M<26**v):
        break
    v += 1
if(v>=2):
    N -= 26**(v-1)
ans = []
for i in range(v):
    ans.append("a")
for i in range(v):
    ans[-i-1]=al[N%26]
    N = N//26
ans.reverse()
anss = ""
for i in range(len(ans)):
    anss += ans[-i-1]
print(anss)
    



Fixed code:
al = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
N = int(input())
M = N
v = 1
while True:
    if(M<=26**v):
        break
    M -= 26**v
    v += 1
if(N<=26):
    anss = al[N%26-1]
else:
  for i in range(v):
      N -= 26**i  
  ans = []
  for i in range(v):
      ans.append("a")
  for i in range(v):
      ans[-i-1]=al[N%26]
      N = N//26
  ans.reverse()
  anss = ""
  for i in range(len(ans)):
      anss += ans[-i-1]
print(anss)
Buggy code:

n = int(input())
strr = []
i = 0
while n > 0:
    rem = n % 26
    if rem == 0:
        strr.append('z')
        n = (n // 26) - 1
    else:
        strr.append(chr((rem - 1) + ord('a')))
        n = n // 26
strr.append('\0')
# strr = strr[::-1]
print("".join(strr))


Fixed code:

n = int(input())
strr = []
i = 0
while n > 0:
    rem = n % 26
    if rem == 0:
        strr.append('z')
        n = (n // 26) - 1
    else:
        strr.append(chr((rem - 1) + ord('a')))
        n = n // 26
strr = strr[::-1]
print("".join(strr))
Buggy code:
n = int(input())

ans = ''

while n > 0:
    n -= 1
    n, mod = divmod(n, 26)
    ans += chr(ord('a') + mod)

print(ans)

Fixed code:
n = int(input())

ans = ''

while n > 0:
    n -= 1
    n, mod = divmod(n, 26)
    ans += chr(ord('a') + mod)

ans = ans[::-1]
print(ans)
Buggy code:
N = int(input())

digit = 0
max = 0
while True:
    if N <= max:
        break
    digit += 1
    max += 26 ** digit
under_digit = 0

for i in range(1, digit):
    under_digit += 26 ** i

order = N - under_digit - 1 #0_index
# print("order:", order)

letter = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']

remain = order
now = digit - 1

# print("digit:", digit)
ans = ""
# print(ans)
counter = 0
while remain != 0:
    # print("---------------")
    counter += 1
    # print("counter", counter)
    if counter >= 10:
        break

    ans = ans + letter[remain // (26 ** now)]
    remain %= 26 ** now
    now -= 1
    # print("ans:", ans, "remain:", remain, "now:", now)

print(ans)


Fixed code:
N = int(input())

digit = 0
max = 0
while True:
    if N <= max:
        break
    digit += 1
    max += 26 ** digit
under_digit = 0

for i in range(1, digit):
    under_digit += 26 ** i

order = N - under_digit - 1 #0_index
# print("order:", order)

letter = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']

remain = order
now = digit - 1

# print("digit:", digit)
ans = ""
# print(ans)
# counter = 0
if remain == 0:
    ans = "a" * digit
while remain != 0:
    # print("---------------")
    # counter += 1
    # print("counter", counter)
    # if counter >= 10:
    #     break

    ans = ans + letter[remain // (26 ** now)]
    remain %= 26 ** now
    now -= 1
    # print("ans:", ans, "remain:", remain, "now:", now)
    if remain == 0 and now == 0:
        ans = ans + "a"
        break

print(ans)
Buggy code:
ans=[]
N=int(input())
alf=['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']

while N>1:
    N,b=divmod(N,26)
    b=alf[b-1]
    ans.insert(0,b)


print(''.join(ans))

Fixed code:
ans=[]
N=int(input())
alf=['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']

while N>0:
    N,b=divmod(N-1,26)
    b=alf[b]
    ans.insert(0,b)


print(''.join(ans))
Buggy code:
def main():
    N = int(input())
    max_d = 1
    while N >= sum([26**i for i in range(max_d + 1)]):
        max_d += 1
    digits = [0 for _ in range(max_d)]
    for k in range(max_d - 1, -1, -1):
        d = min(26, N // (26 ** k))
        digits[k] = d
        N -= d * (26 ** k)
    ans = ''
    for d in digits:
        ans += chr(d - 1 + ord('a'))
    print(ans)


if __name__ == '__main__':
    main()

Fixed code:
def main():
    N = int(input())
    max_d = 1
    while N >= sum([26**i for i in range(max_d + 1)]):
        max_d += 1
    digits = [0 for _ in range(max_d)]
    for k in range(max_d - 1, -1, -1):
        r = N - sum([26**i for i in range(k)])
        digits[k] = r // (26 ** k)
        N -= digits[k] * (26 ** k)
    digits.reverse()
    ans = ''
    for d in digits:
        ans += chr(d - 1 + ord('a'))
    print(ans)


if __name__ == '__main__':
    main()
Buggy code:
n = int(input()) - 1
result = ""
while n != 0:
    result = chr(ord('a') + n % 26) + result
    n = n // 26
print(result)

Fixed code:
n = int(input())
result = ""
while n != 0:
    result = chr(ord('a') + (n - 1) % 26) + result
    n = (n - 1) // 26
print(result)
Buggy code:
n = int(input())
n -= 1
name = []
while n > 0:
    modulo = n % 26
    name += chr(ord("a")+modulo)
    #print (modulo)
    #print (n // 26-1)
    n = n // 26 - 1
print ("".join(reversed(name)))

Fixed code:
n = int(input())
n -= 1
name = []
while n >= 0:
    modulo = n % 26
    name += chr(ord("a")+modulo)
    #print (modulo)
    #print (n // 26-1)
    n = n // 26 - 1
print ("".join(reversed(name)))
Buggy code:
N = int(input())

ABC = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","X","y","z"]
ANS=[]
ANS_N=[]

while N != 0:
  ANS.append(N%27)
  N = N // 27

for i in range(len(ANS)):
  ANS_N.append(ABC[ANS[i]-1])

ans = "".join(reversed(ANS_N))
print(ans)

Fixed code:
N = int(input())
 
ABC = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
ANS=[]
ANS_N=[]
 
while N != 0:
  N -= 1
  ANS.append(N%26)
  N = N // 26
 
for i in range(len(ANS)):
  ANS_N.append(ABC[ANS[i]])
 
ans = "".join(reversed(ANS_N))
print(ans)
Buggy code:
n = int(input())
ans = ''
while n > 0:
    n -= 1;
    ans += chr(ord('a') + n % 26)
    n //= 26
print(ans)

Fixed code:
n = int(input())
ans = ''
while n > 0:
    n -= 1;
    ans += chr(ord('a') + n % 26)
    n //= 26
print(ans[::-1])
Buggy code:
N = int(input())

cnt = 1
a = ord("a")
while True:
    if N <= 26**cnt:
        N -= 1
        ans = []
        while 0 < N:
            ans.append(N%26)
            N //= 26
        print("a"*(cnt-len(ans)),end="")
        for i in range(len(ans)-1,-1,-1):
            print(chr(a+ans[i]),end="")
        print()
        break
    else:
        N -= 26**cnt
        cnt += 1
        print(N)

Fixed code:
N = int(input())

cnt = 1
a = ord("a")
while True:
    if N <= 26**cnt:
        N -= 1
        ans = []
        while 0 < N:
            ans.append(N%26)
            N //= 26
        print("a"*(cnt-len(ans)),end="")
        for i in range(len(ans)-1,-1,-1):
            print(chr(a+ans[i]),end="")
        print()
        break
    else:
        N -= 26**cnt
        cnt += 1
Buggy code:
def II(): return int(input())
N=II()
N-=1
i=1
while N>(26**i):
  N-=26**i
  i+=1
ans=''
for j in range(i):
  q,mod=divmod(N,26)
  ans=ans+chr(mod+ord('a'))
  N=q
ans=ans[::-1]
print(ans)

Fixed code:
def II(): return int(input())
N=II()
N-=1
i=1
while N>=(26**i):
  N-=26**i
  i+=1
ans=''
for j in range(i):
  q,mod=divmod(N,26)
  ans=ans+chr(mod+ord('a'))
  N=q
ans=ans[::-1]
print(ans)
Buggy code:
n = int(input())

ans = ""

al = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
      'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']

while n > 0:
    tmp = n % 26
    if tmp > 0:
        ans += al[tmp-1]
    else:
        ans += 'z'
        n -= 1
    n /= 26
    if n == 0:
        break

print(ans[::-1])


Fixed code:
n = int(input())

ans = ""

al = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
      'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']

while n > 0:
    tmp = n % 26
    if tmp > 0:
        ans += al[tmp-1]
    else:
        ans += 'z'
        n = n - 1
    n = n // 26

print(ans[::-1])
Buggy code:
aalphabets = [""] + [s for s in "abcdefghijklmnopqrstuvwxyz"]

s = int(input())

nums = []

while s > 0:
  nums.append((s - 1) % 26 + 1)
  s = (s - 1) // 26

res = ""
  
for _ in range(len(nums)):
  res = res + alphabets[nums.pop()]

print(res)

Fixed code:
alphabets = [""] + [s for s in "abcdefghijklmnopqrstuvwxyz"]

s = int(input())

nums = []

while s > 0:
  nums.append((s - 1) % 26 + 1)
  s = (s - 1) // 26

res = ""
  
for _ in range(len(nums)):
  res = res + alphabets[nums.pop()]

print(res)
Buggy code:
N=int(input())
ans=''
whileN>0:
  N-=15
  ans+=chr(ord('a')+N%26)
  N//=26
print(ans[::-1])

Fixed code:
N=int(input())
ans=''
while N>0:
  N-=1
  ans+=chr(ord('a')+N%26)
  N//=26
print(ans[::-1])
Buggy code:
import sys
import heapq
import math
import fractions
import bisect
import itertools
from collections import Counter
from collections import deque
from operator import itemgetter
def input(): return sys.stdin.readline().strip()
def mp(): return map(int,input().split())
def lmp(): return list(map(int,input().split()))

l= "zabcdefghijklmnopqrstuvwxy"
n=int(input())
a=[0,26]
b=[0,26]
ans=[]
for i in range(13):
    a.append(a[-1]*26)
    b.append(b[-1]+a[-1])
for i in range(15):
    if n<=b[i]:
        c=i
        m=n-b[i-1]
        break
for i in range(c,0,-1):
    m,ind=divmod(m,26)
    ans.append(l[ind])
ans=reversed(ans)
print(*ans,sep="")

Fixed code:
import sys
import heapq
import math
import fractions
import bisect
import itertools
from collections import Counter
from collections import deque
from operator import itemgetter
def input(): return sys.stdin.readline().strip()
def mp(): return map(int,input().split())
def lmp(): return list(map(int,input().split()))

l= "abcdefghijklmnopqrstuvwxyz"
n=int(input())
a=[1,26]
b=[1,26]
ans=[]
if n==1:
    print("a")
    exit()
for i in range(13):
    a.append(a[-1]*26)
    b.append(b[-1]+a[-1])
for i in range(15):
    if n<=b[i]:
        c=i
        m=n-b[i]-1
        break
for i in range(c,0,-1):
    m,ind=divmod(m,26)
    ans.append(l[ind])
ans=reversed(ans)
print(*ans,sep="")
Buggy code:
N = int(input())

ans = ""
while N > 0:
    ans += chr(ord("a") + N%26)
    N //= 26

print(ans[::-1])


Fixed code:
N = int(input())

ans = ""
while N > 0:
    N -= 1
    ans += chr(ord("a") + N%26)
    N //= 26

print(ans[::-1])
Buggy code:
N = int(input())

ans = ""
li = "abcdefghijklmnopprstuvwxyz"

while N>0:
    N -= 1
    ans += li[N%26]
    N //= 26

print(ans)


Fixed code:
N = int(input())

ans = ""
li = "abcdefghijklmnopqrstuvwxyz"

while N > 0:
    N -= 1
    ans += li[N % 26]
    N //= 26

print(ans[::-1])
Buggy code:
a=int(input())
K = 0
b = 0
List = [27]*13
res = ""
for i in range(12):
  K = a % 26
  List[i] = int(K)
  b = a-K
  if b >26:
    a = b/26
  else:
    break
for i in range(13):
  if List[12-i] ==27:
    pass
  elif List[12-i] ==0:
    res += chr(26+96)
  else:
    res += chr(List[12-i]+96)
print(List,res)

Fixed code:
a=int(input())
K = 0
b = 0
List = [27]*13
res = ""
for i in range(12):
  K = a % 26
  if K ==0:
    K=26
  List[i] = int(K)
  b = a-K
  if b >=26:
    a = b/26
  else:
    break
for i in range(13):
  if List[12-i] ==27:
    pass
  else:
    res += chr(List[12-i]+96)
print(res)
Buggy code:
import math
N=int(input())

a=[chr(i) for i in range(97, 97+26)]
# [chr(i) for i in range(ord('a'), ord('z')+1)]
if N>26:
    answers = []
    while N >= 26:
        N-=1
        b = N % 26
        answers.append(a[b ])
        N = N // 26

    answers.reverse()
    b = ''
    for a in answers:
        b += a
    print(b)
else:
    print(a[N-1])


Fixed code:
import math
N=int(input())

a=[chr(i) for i in range(97, 97+26)]
# [chr(i) for i in range(ord('a'), ord('z')+1)]
if N>26:
    answers = []
    while N > 0:
        N-=1
        b = N % 26
        answers.append(a[b ])
        N = N // 26

    answers.reverse()
    b = ''
    for a in answers:
        b += a
    print(b)
else:
    print(a[N-1])
Buggy code:
N = int(input())


def base10to(n, b):
    if n // b:
        return base10to(n // b - 1, b) + ',' + str(n % b)
    return str(n % b)

res_26 = base10to(N - 1, 26)
print(res_26)

res = []
for s in res_26.split(','):
    res.append(chr(97 + int(s)))

print(''.join(reversed(res)))


Fixed code:
N = int(input())


def base10to(n, b):
    if n // b:
        return base10to(n // b - 1, b) + ',' + str(n % b)
    return str(n % b)

res_26 = base10to(N - 1, 26)

res = []
for s in res_26.split(','):
    res.append(chr(97 + int(s)))

print(''.join(res))
Buggy code:
n = int(input())
ans = ''

for i in range(1,99):
    if n <= 26**i:
        n -= 1
        for j in range(i):
            ans += chr(ord('a')+N%26)
            n //= 26
        break
    else:
        n -= 26**i

print(ans[::-1])

Fixed code:
n = int(input())
ans = ''

for i in range(1,99):
    if n <= 26**i:
        n -= 1
        for j in range(i):
            ans += chr(ord('a')+n%26)
            n //= 26
        break
    else:
        n -= 26**i

print(ans[::-1])
Buggy code:
ii = lambda : int(input())
mi = lambda : map(int,input().split())
li = lambda : list(map(int,input().split()))

n = ii()

al = [1]
nc = 0

def ntow(x):
    if x == 0:
        return 'z'
    v = chr(ord('a')+x-1)
    # print(x,v)
    return v

for i in range(1,15):
    nc += 26 ** i
    al.append(nc+1)
    if nc > 1000000000000001:
        break

# print(al)

for i in range(15):
    if n <= al[i]:
        keta = i
        break

# print('keta',keta)
ans = ''

for i in range(keta):
    tmp = 26**(i+1)
    # print('tmp',tmp)
    nk = n%tmp
    if nk == 0:
        ans =  'z' + ans
        n -= tmp
    else:
        # print(nk//(26**i))
        ans =  ntow(nk//(26**i)) + ans
        n -= nk

print(ans)









Fixed code:
ii = lambda : int(input())
mi = lambda : map(int,input().split())
li = lambda : list(map(int,input().split()))

n = ii()

al = [1]
nc = 0

def ntow(x):
    if x == 0:
        return 'z'
    v = chr(ord('a')+x-1)
    # print(x,v)
    return v

for i in range(1,15):
    nc += 26 ** i
    al.append(nc+1)
    if nc > 1000000000000001:
        break

# print(al)

for i in range(15):
    if n < al[i]:
        keta = i
        break

# print('keta',keta)
ans = ''

for i in range(keta):
    tmp = 26**(i+1)
    # print('tmp',tmp)
    nk = n%tmp
    if nk == 0:
        ans =  'z' + ans
        n -= tmp
    else:
        # print(nk//(26**i))
        ans =  ntow(nk//(26**i)) + ans
        n -= nk

print(ans)
Buggy code:
import sys
stdin = sys.stdin
sys.setrecursionlimit(10**6)
ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
nn = lambda: list(stdin.readline().split())
ns = lambda: stdin.readline().rstrip()

n = ni()

def f(k):
    return chr(97+k)

c = 0
i = 1
while True:
    d = c+pow(26,i)
    if c < n <= d:
        break
    c = d
    i+=1

m = n-c-1
ans = ''
while m > 26:
    ans = f(m%26) + ans
    m = m//26
ans = f(m%26) + ans

print(ans)

Fixed code:
import sys
stdin = sys.stdin
sys.setrecursionlimit(10**6)
ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
nn = lambda: list(stdin.readline().split())
ns = lambda: stdin.readline().rstrip()

n = ni()

def f(k):
    return chr(97+k)

c = 0
i = 1
while True:
    d = c+pow(26,i)
    if c < n <= d:
        break
    c = d
    i+=1

m = n-c-1

ans = ''
while m >= 26:
    ans = f(m%26) + ans
    m = m//26
ans = f(m%26) + ans

ans = 'a'*(i-len(ans)) + ans

print(ans)
Buggy code:
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

n = I()
s = "abcdefghijklmnopqrstuvwxyz"

val = [-1]*100

i = 0
tmp = n - 1
while(True):
    val[i] = tmp % 26
    tmp = tmp // 26
    tmp = tmp - 1
    i += 1
    if(tmp < 0):
        break

print(val)
result = ''
i = 0
while(val[i] >= 0):
    if(i == 0):
        result += s[val[i]]
    else:
        result += s[val[i]]
    i += 1

result = result[::-1]
print(result)

Fixed code:
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())
INF = 1000000000000

n = I()
s = "abcdefghijklmnopqrstuvwxyz"

val = [-1]*100

i = 0
tmp = n - 1
while(True):
    val[i] = tmp % 26
    tmp = tmp // 26
    tmp = tmp - 1
    i += 1
    if(tmp < 0):
        break

result = ''
i = 0
while(val[i] >= 0):
    if(i == 0):
        result += s[val[i]]
    else:
        result += s[val[i]]
    i += 1

result = result[::-1]
print(result)
Buggy code:
N = int(input())
ans = ''
while N >0:
    N -= 1
    ans += chr(97 + N%26)
    N //= 26
print(ans)

Fixed code:
N = int(input())
ans = ''
while N >0:
    N -= 1
    ans += chr(97 + N%26)
    N //= 26
print(ans[::-1])
Buggy code:
n=int(input())
alpha=[chr(ord('a') + i) for i in range(26)]
list_num=[]
while n>1:
  num=n%26
  list_num.append(num)
  n=n//26
list_num.reverse()
list_alpha=[]
for i in list_num:
  s=alpha[i-1]
  list_alpha.append(s)
  
print(''.join(list_alpha))
  

Fixed code:
n=int(input())
alpha=['z']+[chr(ord('a') + i) for i in range(26)]
list_num=[]
while n>=1:
  num=n%26
  list_num.append(num)
  if num==0:
    n-=1
  n=n//26
list_num.reverse()
list_alpha=[]
for i in list_num:
  s=alpha[i]
  list_alpha.append(s)
  
print(''.join(list_alpha))
Buggy code:
n = int(input())
chars = 'Xabcdefghijklmnopqrstuvwxyz'
res = ''
while True:
    x = n%26
    if x == 0:
        x = 26
    res += chars[x]
    n -= x
    if n == 0 :
        break
    #n //= 26
print(res[::-1])

Fixed code:
n = int(input())
chars = 'Xabcdefghijklmnopqrstuvwxyz'
res = ''
while True:
    x = n%26
    if x == 0:
        x = 26
    res += chars[x]
    n -= x
    if n == 0 :
        break
    n //= 26
print(res[::-1])
Buggy code:
import string
alpha = string.ascii_lowercase

n = int(input())

ans = []
while (n):
    res = (n % 26)
    print("n % 26: ", n % 26)
    print("letra: ", alpha[res-1])
    print(" n // 26: ", n // 26)
    ans.append(alpha[res-1])
    if (n <= 26):
        break
    if n % 26:
        n = n // 26
    else:
        n = n // 26
        n = n - 1


# print(ans)
ans = ans[::-1]
print(ans)

# 1 -> 26
# 2 -> 26 * 26 + 26
# 3 -> 26 * 26 * 26


Fixed code:
import string
alpha = string.ascii_lowercase

n = int(input())

ans = []
while (n):
    res = (n % 26)
    # print("n % 26: ", n % 26)
    # print("letra: ", alpha[res-1])
    # print(" n // 26: ", n // 26)
    ans.append(alpha[res-1])
    if (n <= 26):
        break
    if n % 26:
        n = n // 26
    else:
        n = n // 26
        n = n - 1


# print(ans)
ans = ans[::-1]
print("".join(ans))

# 1 -> 26
# 2 -> 26 * 26 + 26
# 3 -> 26 * 26 * 26
Buggy code:
n = int(input())
l = [0]
ans = []
a = 0
cur = 1
while a < 1000000000000001:
  a += 26**cur
  cur += 1
  l.append(a)
l = list(reversed(l))
for i in range(len(l)-1):
  if l[i] >= n:
    ans.append(0)
  else:
    div = min((n-l[i+1]-1)//(l[i]-l[i+1]),26)
    n = n-div*(l[i]-l[i+1])
    ans.append(div)
ans.append(n)
ans =list(map(lambda x:x+96, ans))
for i in range(len(ans)):
  if ans[i] > 96:
    ans2 = ans[i:]
    break
ans2 = "".join([chr(i) for i in ans2])
print(n)
print(ans)
print(ans2)

Fixed code:
n = int(input())
l = [0]
ans = []
a = 0
cur = 1
while a < 1000000000000001:
  a += 26**cur
  cur += 1
  l.append(a)
l = list(reversed(l))
for i in range(len(l)-1):
  if l[i] >= n:
    ans.append(0)
  else:
    div = min((n-l[i+1]-1)//(l[i]-l[i+1]),26)
    n = n-div*(l[i]-l[i+1])
    ans.append(div)
ans.append(n)
ans =list(map(lambda x:x+96, ans))
for i in range(len(ans)):
  if ans[i] > 96:
    ans2 = ans[i:]
    break
ans2 = "".join([chr(i) for i in ans2])
print(ans2)
Buggy code:
N = int(input())

N -= 1
a = list()
alpha = [i for i in 'abcdefghijklmnopqrstuvwxyz']
if N < 26:
    a.append(alpha[N])
else:
    while N > 0:
        sho = N // 26
        amari = N % 26
        print(sho, amari, alpha[amari])
        a.append(alpha[amari])
        N = N // 26 - 1
    if N == 0:
        a.append(alpha[N])
a.reverse()
print(''.join(a))

Fixed code:
N = int(input())

N -= 1
a = list()
alpha = [i for i in 'abcdefghijklmnopqrstuvwxyz']
if N < 26:
    a.append(alpha[N])
else:
    while N > 0:
        sho = N // 26
        amari = N % 26
        a.append(alpha[amari])
        N = N // 26 - 1
    if N == 0:
        a.append(alpha[N])
a.reverse()
print(''.join(a))
Buggy code:
import math as mt
import collections as cc
I=lambda:list(map(int,input().split()))
ans=[]
prev=0
for i in range(1,15):
    ans.append(26**i+prev)
    prev+=26**i
    
n,=I()
p=0
s='abcdefghijklmnopqrstuvwxyz'
f={}
for i in range(1,27):
    f[i]=s[i-1]
for i in range(len(ans)):
    p+=1
    if n<=ans[i]:
        break
an=''
for i in range(p):
    an+=f[n%26]
    n//=26
print(an)
    

Fixed code:
import math as mt
import collections as cc
I=lambda:list(map(int,input().split()))
ans=[]
prev=0
for i in range(1,15):
    ans.append(26**i+prev)
    prev+=26**i
    
n,=I()
p=0
s='abcdefghijklmnopqrstuvwxyz'
f={}
for i in range(1,27):
    f[i]=s[i-1]
for i in range(len(ans)):
    p+=1
    if n<=ans[i]:
        break
an=''
f[0]='z'
for i in range(p):

    an+=f[n%26]
    if n%26:
        n//=26
    else:
        n//=26
        n-=1
    
print(an[::-1])
Buggy code:
def num2alpha(num):
    if num<=26:
        return chr(64+num)
    elif num%26==0:
        return num2alpha(num//26-1)+chr(90)
    else:
        return num2alpha(num//26)+chr(64+num%26)
N = int(input())
print(num2alpha(N))

Fixed code:
def num2alpha(num):
    if num<=26:
        return chr(64+num)
    elif num%26==0:
        return num2alpha(num//26-1)+chr(90)
    else:
        return num2alpha(num//26)+chr(64+num%26)
N = int(input())
print(num2alpha(N).lower())