Buggy python submission (verdict: Runtime Error):
n = int(input())
list=[0,'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']
word = []
i = 12
while i>=0:
  x = n//(26**i)
  word.append(x)
  n = n-x*26**i
  i -= 1

while True:
  word = int(''.join(word)).split()
  if 0 in word:
    p = word.index(0)
    word[p-1] = word[p-1]-1 
    word[p] = 26
  else:
    break

h=''
for i in range(len(word)):
  h += list[word[i]]
print(h)

Fixed submission:
list = [0,'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']
num_list =[0]
for i in range(1,15):
    num_list.append(26**i+num_list[i-1])

n = int(input())
i = 0
while True:
    if num_list[i] >= n:
        break
    else:
        i +=1


word = []
for j in range(i,0,-1):
    x = n//26**(j-1)
    if x==27:
        word.append(26)
        n = n -26**(j-1)*(n//26**(j-1))+26**(j-1)
    else:
        word.append(x)
        n = n -26**(j-1)*(n//26**(j-1))
while True:
    if 0 in word:
        p = word.index(0)
        word[p-1] = word[p-1]-1
        word[p] = 26
    else:
        break
h =''
for k in range(len(word)):
    h+=str(list[word[k]])
print(h)

Buggy python submission (verdict: Runtime Error):
n = int(input())
list=[0,'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']
word = []
i = 12
while i>=0:
  x = n//(26**i)
  word.append(x)
  n = n-x*26**i
  i -= 1

while True:
  word = int(''.join(word)).split()
  if 0 in word:
    p = word.index(0)
    word[p-1] = word[p-1]-1 
    word[p] = 26
  else:
    break

h=''
for i in range(len(word)):
  h += list[word[i]]
print(h)


Fixed submission:
list = [0,'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']
num_list =[0]
for i in range(1,15):
    num_list.append(26**i+num_list[i-1])

n = int(input())
i = 0
while True:
    if num_list[i] >= n:
        break
    else:
        i +=1


word = []
for j in range(i,0,-1):
    x = n//26**(j-1)
    if x==27:
        word.append(26)
        n = n -26**(j-1)*(n//26**(j-1))+26**(j-1)
    else:
        word.append(x)
        n = n -26**(j-1)*(n//26**(j-1))
while True:
    if 0 in word:
        p = word.index(0)
        word[p-1] = word[p-1]-1
        word[p] = 26
    else:
        break
h =''
for k in range(len(word)):
    h+=str(list[word[k]])
print(h)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
list=[0,'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']
word = []
i = 12
while i>=0:
  x = n//(26**i)
  word.append(x)
  n = n-x*26**i

while True:
  word = int(''.join(word)).split()
  if 0 in word:
    p = word.index(0)
    word[p-1] = word[p-1]-1 
    word[p] = 26
  else:
    break

h=''
for i in range(len(word)):
  h += list[word[i]]
print(h)

Fixed submission:
list = [0,'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']
num_list =[0]
for i in range(1,15):
    num_list.append(26**i+num_list[i-1])

n = int(input())
i = 0
while True:
    if num_list[i] >= n:
        break
    else:
        i +=1


word = []
for j in range(i,0,-1):
    x = n//26**(j-1)
    if x==27:
        word.append(26)
        n = n -26**(j-1)*(n//26**(j-1))+26**(j-1)
    else:
        word.append(x)
        n = n -26**(j-1)*(n//26**(j-1))
while True:
    if 0 in word:
        p = word.index(0)
        word[p-1] = word[p-1]-1
        word[p] = 26
    else:
        break
h =''
for k in range(len(word)):
    h+=str(list[word[k]])
print(h)

Buggy python submission (verdict: Runtime Error):
list = [0,'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']
num_list =[0]
for i in range(1,15):
    num_list.append(26**i+num_list[i-1])

n = int(input())
i = 0
while True:
    if num_list[i] >= n:
        break
    else:
        i +=1


word = []
for j in range(i,0,-1):
    x = n//26**(j-1)
    elif x==27:
        word.append(26)
        n = n -26**(j-1)*(n//26**(j-1))+26**(j-1)
    else:
        word.append(x)
        n = n -26**(j-1)*(n//26**(j-1))
while 0 in word:
    p = word.index(0)
    word[p-1] = word[p-1]-1
    word[p] = 26
h =''
for k in range(len(word)):
    h+=str(list[word[k]])
print(h)

Fixed submission:
list = [0,'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']
num_list =[0]
for i in range(1,15):
    num_list.append(26**i+num_list[i-1])

n = int(input())
i = 0
while True:
    if num_list[i] >= n:
        break
    else:
        i +=1


word = []
for j in range(i,0,-1):
    x = n//26**(j-1)
    if x==27:
        word.append(26)
        n = n -26**(j-1)*(n//26**(j-1))+26**(j-1)
    else:
        word.append(x)
        n = n -26**(j-1)*(n//26**(j-1))
while True:
    if 0 in word:
        p = word.index(0)
        word[p-1] = word[p-1]-1
        word[p] = 26
    else:
        break
h =''
for k in range(len(word)):
    h+=str(list[word[k]])
print(h)