qyliang/CodeNanoFix huggingface dataset:
Buggy code:
def main():
    n = int(input())
    ans = []
    for i in range(1, 12):
        if n <= 26**i:
            n -= 1
            for j in range(i):
                a = n % 26
                ans.append(chr(97+a))
                n = n // 26
            break
        else:
            n -= 26**i
    print(*ans[::-1], sep='')

Fixed code:
def main():
    n = int(input())
    ans = []
    for i in range(1, 12):
        if n <= 26**i:
            n -= 1
            for j in range(i):
                a = n % 26
                ans.append(chr(97+a))
                n = n // 26
            break
        else:
            n -= 26**i
    print(*ans[::-1], sep='')
 
if __name__ == '__main__':
    main()
Buggy code:
n=int(input())
a=[]
while n>1:
    b=n%26
    if b==0:
        b=26
    c=lambda b:chr(b+64)
    a.append(c(b))
    n//=26
d=len(a)
e=[]
for i in range(d):
    e.append(a[-1-i])
ans=''.join(e)
print(ans)

Fixed code:
n=int(input())
a=[]
t=0
while n>0:
    b=n%26
    if b==0:
        b=26
        t=1
    c=lambda b:chr(b+64)
    a.append(c(b))
    n//=26
    if t==1:
        n-=1
        t=0
d=len(a)
e=[]
for i in range(d):
    e.append(a[-1-i])
ans=''.join(e)
ans=ans.lower()
print(ans)
Buggy code:
n=int(input())

basis=[26**i for i in range(12)]
l=[]
s=0
for b in basis:
    s+=b
    l.append(s)    

i=0
f=12
while(f-i>1):
#     print(f-i)
    x=(i+f)//2
    if l[x]>n:
        f=x
    else:
        i=x

k=n-l[i]
length=i+1
x=k-1
res=[]
for i in range(length):
    q=k//26
    r=k%26
    x=q
    res.append(r)

ans=list(map(lambda x: chr(ord("a")+x),list(reversed(res))))
print("".join(ans))

Fixed code:
n=int(input())

basis=[26**i for i in range(12)]
l=[]
s=0
for b in basis:
    s+=b
    l.append(s)    

i=0
f=12
while(f-i>1):
#     print(f-i)
    x=(i+f)//2
    if l[x]>n:
        f=x
    else:
        i=x

k=n-l[i]
length=i+1

res=[]
for i in range(length):
    q=k//26
    r=k%26
    k=q
    res.append(r)

ans=list(map(lambda x: chr(ord("a")+x),list(reversed(res))))
print("".join(ans))
Buggy code:
n = int(input())
a = []
while n > 0:
    n -= 1
    a.append(n%26)
    n = n // 26
ans = ""
print(a)
for i in range(len(a)):
    ans += chr(ord("a")+a[(-1)*(i+1)])
print(ans)

Fixed code:
n = int(input())
a = []
while n > 0:
    n -= 1
    a.append(n%26)
    n = n // 26
ans = ""
for i in range(len(a)):
    ans += chr(ord("a")+a[(-1)*(i+1)])
print(ans)
Buggy code:
N = int(input())


set_index = ''
while N > 0:
    N -= 1
    index = (N % 26) + ord('a')
    set_index += chr(index)
    N //= 26
print(set_index)

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

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

print(ans)

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

lst = [0]
for i in range(1, 1000):
    tmp = pow(26, i)
    lst.append(tmp)
    if tmp > n:
        break
cum = [lst[0]]
for i in range(1, len(lst)):
    cum.append(cum[-1] + lst[i])
idx = 0
while True:
    if n-1 < cum[idx]:
        break
    idx += 1
num = n - lst[idx-1] - 1
ans = ''
for i in range(idx)[::-1]:
    tmp = pow(26, i)
    if num >= tmp:
        k = num // tmp
        num = num - 26*k
    else:
        k = num
    ans += lc[k]
print(ans)

Fixed code:
import string
lc = string.ascii_lowercase
n = int(input())

lst = [0]
for i in range(1, 100000):
    tmp = pow(26, i)
    lst.append(tmp)
    if tmp > n:
        break
cum = [lst[0]]
for i in range(1, len(lst)):
    cum.append(cum[-1] + lst[i])
idx = 0
while True:
    if n-1 < cum[idx]:
        break
    idx += 1
num = n - cum[idx-1] - 1
ans = ''
for i in range(idx)[::-1]:
    tmp = pow(26, i)
    k = num // tmp
    num = num - tmp *k
    ans += lc[k]
print(ans)
Buggy code:
n = int(input())
d = ['z', '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 = ''
f = 0
if n % 26 == 0:
  f = 1
  while n > f:
    a = d[n % 26] + a
    n //= 26
    print(a)

Fixed code:
n = int(input())
d = ['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 = ''
while n:
  n -= 1
  a = d[n % 26] + a
  n //= 26
print(a)
Buggy code:
N = input()
N = int(N)
print(N)
N-=1

dit = [0 for _ in range(100)]
i = 0
while True:
  dit[i] = N % 26
  N = N // 26
  if N == 0:
    break
  else:
    N -= 1
  i+=1

print(dit)
name = ""
for j in range(i,-1,-1):
  name += chr(97+dit[j])
  
print(name)

Fixed code:
N = input()
N = int(N)
#print(N)
N-=1

dit = [0 for _ in range(100)]
i = 0
while True:
  dit[i] = N % 26
  N = N // 26
  if N == 0:
    break
  else:
    N -= 1
  i+=1

#print(dit)
name = ""
for j in range(i,-1,-1):
  name += chr(97+dit[j])
  
print(name)
Buggy code:
N = int(input())

ans = ""

while N > 0:
    N -= 1
    ans += chr(97 + N%26)
    N = N // 26

print(ans)

Fixed code:
N = int(input())

ans = ""

while N > 0:
    N -= 1
    ans += chr(97 + N%26)
    N = N // 26

print(ans[::-1])
Buggy code:
from sys import stdin

def Base_10_to_n(X, n):
    if X == 26:
        return "z"
    alpha = "zabcdefghijklmnopqrstuvwxy"
    X_dumy = X
    out = ''
    while X_dumy>0:
        amari = X_dumy%n
        if amari == 0:
            new = alpha[amari]
            out = new+out
            X_dumy = int(X_dumy/n)-1
        else:
            new = alpha[X_dumy%n]
            out = new+out
            X_dumy = int(X_dumy/n)
    return out

def main():
    n = int(input())
    n = 78
    x16_expr = Base_10_to_n(n, 26)
    print(x16_expr)

if __name__ == "__main__":
    main()

Fixed code:
from sys import stdin

def Base_10_to_n(X, n):
    if X == 26:
        return "z"
    alpha = "zabcdefghijklmnopqrstuvwxy"
    X_dumy = X
    out = ''
    while X_dumy>0:
        amari = X_dumy%n
        if amari == 0:
            new = alpha[amari]
            out = new+out
            X_dumy = int(X_dumy/n)-1
        else:
            new = alpha[X_dumy%n]
            out = new+out
            X_dumy = int(X_dumy/n)
    return out

def main():
    n = int(input())
    x16_expr = Base_10_to_n(n, 26)
    print(x16_expr)

if __name__ == "__main__":
    main()
Buggy code:
n = int(input())
s = ""
al = "abcdefghijklmnopqrstuvwxyz"

while n > 0:
  n -= 1
  x = n%26
  n /= 26
  s += al[int(x)]

print(s[::-1])
  


Fixed code:
n = int(input())
s = ""
al = "abcdefghijklmnopqrstuvwxyz"

while n > 0:
  o = (n-1) % 26
  n = (n-1) // 26
  s += al[int(o)]

print(s[::-1])
Buggy code:
n = 123456789

m = {}
for i in range(0,26):
  m[i] = chr(97+i)

ans = ''
while 1:

  n -= 1

  x = n // 26
  y = n % 26

  ans = m[y] + ans

  n = x
  if n == 0:
    break

print(ans)


Fixed code:
n = int(input())

m = {}
for i in range(0,26):
  m[i] = chr(97+i)

ans = ''
while 1:

  n -= 1

  x = n // 26
  y = n % 26

  ans = m[y] + ans

  n = x
  if n == 0:
    break

print(ans)
Buggy code:
n=int(input())
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)

print(num2alpha(n))

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

print(num2alpha(n).lower())
Buggy code:
n = int(input())
s = "abcdefghijklmnopqrstuvwxyz"
ans = []

t = 1

while n > 26:
    n -= 1
    tmp = n % 26
    ans.append(tmp)
    n //= 26

ans.append(n)

for i in ans[::-1]:
    print(s[i-1], end="")


Fixed code:
n = int(input())
s = "abcdefghijklmnopqrstuvwxyz"
ans = []

t = 1

while n > 26:
    tmp = n % 26
    if tmp == 0:
        tmp = 26
        n //= 26
        n -= 1
        ans.append(tmp)
        continue
    ans.append(tmp)
    n //= 26

ans.append(n)

for i in ans[::-1]:
    print(s[i-1], end="")
Buggy code:
n=int(input())
alphabet="abcdefghijklmnopqrstuvwxyz"
ans=[]
while n>0:
    ans.append(alphabet[n%26-1])
    n=n//26
print("".join(ans))


Fixed code:
n=int(input())
alphabet="abcdefghijklmnopqrstuvwxyz"
ans=[]
while n>0:
    n-=1
    ans.append(alphabet[n%26])
    n=n//26
ans.reverse()
print("".join(ans))
Buggy code:
N = int(input())

ans = 0
cnt = 0
add = []
sum = []
while ans < N:
    add.append(ans)
    sum.append(ans**(cnt+1))
    cnt += 1
    ans += (26**cnt)


A = N - add[cnt-1]
print(A)
name =[]
for i in reversed(range(cnt)):
    div = A // (26**i)
    if i == 0:
        name.append(div-1)
    else:
        name.append(div)
    A -= div * (26**i)


name_a =''
for i in range(cnt):
    name_a += chr(name[i]+97)
print(name_a)


Fixed code:
N = int(input())

ans = 0
cnt = 0
add = []
sum = []
while ans < N:
    add.append(ans)
    sum.append(ans**(cnt+1))
    cnt += 1
    ans += (26**cnt)


A = N - add[cnt-1]
name =[]
for i in reversed(range(cnt)):
    if i == 0:
        div = A
    else:
        div = (A-1) // (26**i)

    if i == 0 or div == 26:
        name.append(div-1)
        A -= (div-1) * (26**i)
    else:
        name.append(div)
        A -= div * (26**i)



name_a =''
for i in range(cnt):
    name_a += chr(name[i]+97)
print(name_a)
Buggy code:

 k=0
ans=[]
while k<1:
    if num<=26:
        ans.append((chr(96+num)))
        k=1
    elif num%26==0:
        num=(num//26-1)
        ans.append((chr(96+26)))
    else:
        ans.append((chr(96+num%26)))
        num=(num//26)

for i in range(len(ans)-1,-1,-1):
    if i ==0:
        print(ans[i])
    else:
        print(ans[i], end="")

Fixed code:
num = int(input())
k=0
ans=[]
while k<1:
    if num<=26:
        ans.append((chr(96+num)))
        k=1
    elif num%26==0:
        num=(num//26-1)
        ans.append((chr(96+26)))
    else:
        ans.append((chr(96+num%26)))
        num=(num//26)

for i in range(len(ans)-1,-1,-1):
    if i ==0:
        print(ans[i])
    else:
        print(ans[i], end="")
Buggy code:
N=int(input())
lis=[chr(i) for i in range(97, 97+26)]
ans=''
while N>0:
    N-=1
    ans+=lis[N%26]
    N=N//26
print(ans[::-1]

Fixed code:
N=int(input())
alphabet=[chr(i) for i in range(97,123)]
ans=""
while N>0:
    N-=1
    ans=chr(97+(N%26))+ans
    N//=26
print(ans)
Buggy code:
n = int(input())
s = ''
while n > 0:
  n-=1
  ans += chr(ord('a') + n%26)
  n//=26
 
print(ans[::-1])
  

Fixed code:
n = int(input())
s = ''
while n > 0:
  n-=1
  s += chr(ord('a') + n%26)
  n//=26
 
print(s[::-1])
Buggy code:
=int(input())
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']
s=''
M=[26**i for i in range(12)]
S=[]
k=0
for i in range(11):
    k=k+M[i]
    if N<k:
        m=k-M[i]
        N=N-m
        L=[0]
        n=0
        for j in range(1, i+1):
            L.append(N%M[j])
            s=Al[(L[j]-L[j-1])//M[j-1]]+s
        break
print(s)

Fixed code:
N=int(input())
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']
s=''
M=[26**i for i in range(12)]
k=0
for i in range(12):
    k=k+M[i]
    if N<k:
        m=k-M[i]
        N=N-m
        L=[0]
        n=0
        for j in range(1, i+1):
            L.append(N%M[j])
            s=Al[(L[j]-L[j-1])//M[j-1]]+s
        break
print(s)
Buggy code:
N=int(input())

ans=[]
a=ord("a")
tmp=0
while N>0:
    tmp+=1
    if N%26==0:
        ans.append("z")
    else:
        if tmp==1:
            ans.append(chr(a+N%26-1))
        else:
            ans.append(chr(a+(N//(26**(tmp-1)))%26))
    N-=26**tmp
    print(N)

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

Fixed code:
N=int(input())

ans=[]
a=ord("a")
tmp=0
while N>0:
    tmp+=1
    if tmp==1:
        chrr=N%26-1
        if chrr<0:
            chrr+=26
        ans.append(chr(a+chrr))
    else:
        chrr=((N-1)//(26**(tmp-1)))%26
        if chrr<0:
            chrr+=26
        ans.append(chr(a+chrr))
    N-=26**tmp

print("".join(ans[::-1]))
Buggy code:
entierAConvertir = int(input())
baseArrivee= 26 
sortie = []
while entierAConvertir>0:
  reste = entierAConvertir % baseArrivee
  if reste==0:
    reste = 26
  sortie.append(reste)
  entierAConvertir-=reste
  entierAConvertir = (entierAConvertir//baseArrivee)
print(sortie)
for i in range(len(sortie)):
  print(chr(sortie[len(sortie)-1-i]+ord('a')-1),end="")

Fixed code:
entierAConvertir = int(input())
baseArrivee= 26 
sortie = []
while entierAConvertir>0:
  reste = entierAConvertir % baseArrivee
  if reste==0:
    reste = 26
  sortie.append(reste)
  entierAConvertir-=reste
  entierAConvertir = (entierAConvertir//baseArrivee)
for i in range(len(sortie)):
  print(chr(sortie[len(sortie)-1-i]+ord('a')-1),end="")
Buggy code:
import sys
read = sys.stdin.read
readlines = sys.stdin.readlines
def main():
    no = int(input())

    n26 = 1
    n = no
    while n > 0:
        n26 *= 26
        n -= n26
    n += n26
    n -= 1
    r = []
    while n:
        t1 = n % 26
        r.append(chr(t1 + 97))
        n = n // 26
    print("".join(r[::-1]))

if __name__ == '__main__':
    main()

Fixed code:
import sys
read = sys.stdin.read
readlines = sys.stdin.readlines
def main():
    n = int(input())
    r = []
    while n > 0:
        n -= 1
        t1 = n % 26
        r.append(chr(t1+97))
        n = n // 26
    r2 = "".join(r[::-1])
    print(r2)

if __name__ == '__main__':
    main()
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:
import string
import itertools
n = int(input())
s = n
l = list(string.ascii_lowercase)
count = 1
for i in range(1, 100):
    s -= 26 ** i
    if s <= 0:
        break
    else:
        count += 1
n_list = []
answer = []
for i in reversed(range(1, count+1)):
    number = min(26, n // 26 ** (i-1))
    n -= number * 26 ** (i-1)
    n_list.append(number)
n_l = []
for i, x in  enumerate(reversed(n_list)):
    if x <= 0:
        n_l.append(26)
        n_list[i-1]
    else:
        n_l.append(x)
for i in n_l:
    answer.append(l[i-1])
print(''.join(answer))


Fixed code:
import string
import itertools
n = int(input())
s = n
l = list(string.ascii_lowercase)
count = 1
for i in range(1, 100):
    s -= 26 ** i
    if s <= 0:
        break
    else:
        count += 1
n_list = []
answer = []
for i in reversed(range(1, count+1)):
    number = min(26, n // 26 ** (i-1))
    n -= number * 26 ** (i-1)
    n_list.append(number)
n_l = []
for i, x in  enumerate(reversed(n_list)):
    if x <= 0:
        n_l.append(x + 26)
        n_list[-(i+2)] -= 1
    else:
        n_l.append(x)
for i in reversed(n_l):
    answer.append(l[i-1])
print(''.join(answer))
Buggy code:
import numpy as np
N=int(input())
a=["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=np.zeros(11,dtype=int)
for i in range(11):
  A[i]=(26**(i+1))
B=np.cumsum(A)
for i in range(11):
  if N<=B[i]:
    name=[" "]*(i+1)
    if i==0:
      N=N
    else:
      N-=B[i-1]
    for j in reversed(range(i+1)):
      if j>=1:
        if N-((N//A[j-1])*A[j-1])==0 or N==0:
          name[i-j]="z"
        else:
          name[i-j]=a[N//A[j-1]-1]
        N-=N//A[j-1]*A[j-1]
      else:
        if N==0:
          name[i-j]="z"
        else:
          name[i-j]=a[N-1]
    break

print(''.join(name))

Fixed code:
import numpy as np
N=int(input())
a=["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=np.zeros(11,dtype=int)
for i in range(11):
  A[i]=(26**(i+1))
B=np.cumsum(A)
for i in range(11):
  if N<=B[i]:
    name=[" "]*(i+1)
    if i==0:
      N=N
    else:
      N-=B[i-1]
    for j in reversed(range(i+1)):
      if j>=1:
        if N==0:
          name[i-j]="z"
        else:
          name[i-j]=a[(N-1)//A[j-1]]
        N-=N//A[j-1]*A[j-1]
      else:
        if N==0:
          name[i-j]="z"
        else:
          name[i-j]=a[N-1]
    break

print(''.join(name))
Buggy code:
import sys

def input():
    return sys.stdin.readline()[:-1]

N = int(input())

alphabet = "zabcdefghijklmnopqrstuvwxy"
#alpha = [chr(ord('a') + i) for i in range(26)]

name = ""

for i in range(10000):
    if N <= 26:
        q = N // 26
        mod = N % 26
        name = alphabet[mod] + name
        break
    else:
        q = N // 26
        mod = N % 26
        name = alphabet[mod] + name
        N = q - 1

    print(q, mod)


print(name)


Fixed code:
import sys

def input():
    return sys.stdin.readline()[:-1]

N = int(input())

alphabet = "zabcdefghijklmnopqrstuvwxy"
#alpha = [chr(ord('a') + i) for i in range(26)]

name = ""

for i in range(10000):
    if N <= 26:
        q = N // 26
        mod = N % 26
        if mod == 0:
            q -= 1
        name = alphabet[mod] + name
        break
    else:
        q = N // 26
        mod = N % 26
        if mod == 0:
            q -= 1
        name = alphabet[mod] + name
        N = q


    #print(q, mod)


print(name)
Buggy code:
num = int(input())
s = 'abcdefghijklmnopqrstuvwxyz'
ans = ''
while num > 26:
    num, rest = divmod(num, 26)
    ans += s[rest - 1]
    if rest == 0:
        num -= 1
    #num -= 1
    print(ans, num, rest)
    
ans += s[num - 1]
print(ans[::-1])

Fixed code:
num = int(input())
s = 'abcdefghijklmnopqrstuvwxyz'
ans = ''
while num > 26:
    num, rest = divmod(num, 26)
    ans += s[rest - 1]
    if rest == 0:
        num -= 1
    #num -= 1
    #print(ans, num, rest)
    
ans += s[num - 1]
print(ans[::-1])
Buggy code:
#C
N=int(input())
alpha="abcdefghijklmnopqrstuvwxyz"
cnt=1
while True:
    if N<=26**cnt:
        break
    N-=26**cnt
    cnt+=1
ans=""
for i in range(cnt):
    ans=alpha[N%26-1]+ans
    N=N//26+1
    print(N)
print(ans)

Fixed code:
#C
N=int(input())
alpha="zabcdefghijklmnopqrstuvwxy"
cnt=1
while True:
    if N<=26**cnt:
        break
    N-=26**cnt
    cnt+=1
ans=""
for i in range(cnt):
    ans=alpha[N%26]+ans
    N=(N-1)//26+1
print(ans)
Buggy code:
n=int(input())  #96
a=""
while n>0:
    n-=1
    rem=n%26
    a+=chr(97+rem)
    n=(n-rem)//26
    
print(a)




Fixed code:
n=int(input())  #96
a=""
while n>0:
    n-=1
    rem=n%26
    a+=chr(97+rem)
    n=(n-rem)//26
    
print(a[::-1])
Buggy code:
a=[26, 702, 18278, 475254, 12356630, 321272406, 8353082582, 217180147158, 5646683826134, 146813779479510, 3817158266467286]
n=int(input())
k=0
for i in range(10):
    if n<=a[i]:
        k=i+1
        break
else:
    k=11
if k==1:
    print(chr(n+96))
else:
    ans=""
    print(n)
    for i in range(k):
        if i!=k-1:
            ans+=chr(n//(26**(k-1-i))+97)
            n=n%(26**(k-1-i))
        else:
            ans+=chr(n%26+96)
    print(ans)

Fixed code:
a=[26, 702, 18278, 475254, 12356630, 321272406, 8353082582, 217180147158, 5646683826134, 146813779479510, 3817158266467286]
n=int(input())
k=0
for i in range(10):
    if n<=a[i]:
        k=i+1
        break
else:
    k=11
if k==1:
    print(chr(n+96))
else:
    ans=""
    n=n-a[k-2]-1
    for i in range(k):
        if i!=k-1:
            ans+=chr(n//(26**(k-1-i))+97)
            n=n%(26**(k-1-i))
        else:
            ans+=chr(n%26+97)
    print(ans)
Buggy code:
N = int(input())

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)

print(num2alpha(N))


Fixed code:
N = int(input())

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)

print(num2alpha(N).lower())
Buggy code:
n=int(input())
s=''
while n:
    n-=1
    s=chr(97+total%26)+s
    n//=26

print(s)

Fixed code:
n=int(input())
s=''
while n:
    n-=1
    s=chr(97+n%26)+s
    n//=26

print(s)
Buggy code:
from itertools import accumulate
import numpy as np
N=int(input())-1
L=[26**(i+1) for i in range(10)]
sL=list(accumulate(L))
result=[]
for i in range(10):
    if N<=sL[i] and N>=26:
        N-=sL[i-1]
        k=i
        break
for m in range(k):
    time=0
    while N>=L[k-m-1]:
        N-=L[k-m-1]
        time+=1
    result.append(chr(time+97))
result.append(chr(N+97))
print(''.join(result))

Fixed code:
from itertools import accumulate
import numpy as np
N=int(input())
N-=1
L=[26**(i+1) for i in range(15)]
sL=list(accumulate(L))
result=[]
k=0
for i in range(15):
    if N+1<=sL[i] and N>=25:
        N-=sL[i-1]
        k=i
        break
for m in range(k):
    time=0
    while N>=L[k-m-1]:
        N-=L[k-m-1]
        time+=1
    result.append(chr(time+97))
result.append(chr(N+97))
print(''.join(result))
Buggy code:
N=int(input())
keta=0
n=N
ketakari=0
while(1):
    keta+=1
    ketakari+=26**keta
    if N<=ketakari:
        break
for j in range(1,keta):
    N-=26**j
ans=""
#print(keta)
#print(ans)
print(N)
N-=1
for i in range(keta):
    kari=N%26
    ans=chr(ord("a")+kari)+ans
    N//=26
print(ans)

Fixed code:
N=int(input())
keta=0
n=N
ketakari=0
while(1):
    keta+=1
    ketakari+=26**keta
    if N<=ketakari:
        break
for j in range(1,keta):
    N-=26**j
ans=""
#print(keta)
#print(ans)
#print(N)
N-=1
for i in range(keta):
    kari=N%26
    ans=chr(ord("a")+kari)+ans
    N//=26
print(ans)
Buggy code:
N = int(input())
resulter = "abcdefghijklmnopqrstuvwxyz"

ans_list = []
while True:
    N = N - 1
    mod = N % 26
    ans_list.append(resulter[mod])
    N = N // 26
    if N < 26:
        break

print("".join(ans_list))



Fixed code:
N = int(input())
resulter = "abcdefghijklmnopqrstuvwxyz"

ans_list = []
while True:
    N = N - 1
    mod = N % 26
    ans_list.append(resulter[mod])
    N = N // 26
    if N < 1:
        break

ans_list.reverse()
print("".join(ans_list))
Buggy code:
def Quadrillion():

    Num = int(input())

    if Num<=26:
        moji = chr(96+Num)
    elif Num%26==0:
        moji = num2alpha(Num//26-1)+chr(97)
    else:
        moji = num2alpha(Num//26)+chr(97+Num%26)

    print(moji)

def num2alpha(num):
    if num<=26:
        return chr(96+num)
    elif num%26==0:
        return num2alpha(num//26-1)+chr(97)
    else:
        return num2alpha(num//26)+chr(97+num%26)

if __name__ == '__main__':
    Quadrillion()

Fixed code:
def Quadrillion():

    Num = int(input())

    moji = num2alpha(Num)

    print(moji)

def num2alpha(num):
    if num<=26:
        return chr(96+num)
    elif num%26==0:
        return num2alpha(num//26-1)+chr(122)
    else:
        return num2alpha(num//26)+chr(96+num%26)

if __name__ == '__main__':
    Quadrillion()
Buggy code:
N = int(input())

s = 1
while N > 26 ** s:
    N -= 26 ** s
    s += 1

ans = ""
N -= 1
for i in range(s):
    ans += chr(ord("a") + ord(N % 26))
    N = N // 26

print(ans[::-1])

Fixed code:
N = int(input())

s = 1
while N > 26 ** s:
    N -= 26 ** s
    s += 1

ans = ""
N -= 1
for i in range(s)[::-1]:
    a = N // (26 ** i)
    N -= (26 ** i) * a
    ans += chr(ord("a") + a)
    
print(ans)
Buggy code:
N = int(input())
alf = []
while 1 < N:
    if N % 26 == 0:
        alf.append('z')
    else:
        alf.append(chr((N % 26)+96))
    N //= 26
alf.reverse()
alf = ''.join(alf)
print(alf)

Fixed code:
N = int(input())
alf = []
while 0 < N:
    if N % 26 ==0:#Z
        alf.append('z')
        N = N//26-1
    else:
        alf.append(chr((N % 26)+96))
        N = N//26
alf.reverse()
alf = ''.join(alf)
print(alf)
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)
num2alpha(int(input())).lower()

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)

print(num2alpha(int(input())).lower())