output_description: Print the answer to Roger's question as a string consisting of lowercase
  English letters.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N
attempt: import string
  
  alphabet = list(string.ascii_lowercase)
  N = int(input())
  if N // 26 < 1:
      c = alphabet[N - 1]
  elif N // 26 < 26:
      c = alphabet[(N // 26**1) - 1] + alphabet[(N - 1) % 26]
  elif N // 26 < 26**2:
      c = (
          alphabet[(N // (26**2)) - 1]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**3:
      c = (
          alphabet[(N // (26**3)) - 1]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**4:
      c = (
          alphabet[(N // (26**4)) - 1]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**5:
      c = (
          alphabet[(N // (26**5)) - 1]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**6:
      c = (
          alphabet[(N // (26**6)) - 1]
          + alphabet[((N // (26**5)) - 1) % 26]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**7:
      c = (
          alphabet[(N // (26**7)) - 1]
          + alphabet[(N // (26**6)) - 1]
          + alphabet[((N // (26**5)) - 1) % 26]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**8:
      c = (
          alphabet[(N // (26**8)) - 1]
          + alphabet[(N // (26**7)) - 1]
          + alphabet[(N // (26**6)) - 1]
          + alphabet[((N // (26**5)) - 1) % 26]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**9:
      c = (
          alphabet[(N // (26**9)) - 1]
          + alphabet[(N // (26**8)) - 1]
          + alphabet[(N // (26**7)) - 1]
          + alphabet[(N // (26**6)) - 1]
          + alphabet[((N // (26**5)) - 1) % 26]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**10:
      c = (
          alphabet[(N // (26**10)) - 1]
          + alphabet[(N // (26**9)) - 1]
          + alphabet[(N // (26**8)) - 1]
          + alphabet[(N // (26**7)) - 1]
          + alphabet[(N // (26**6)) - 1]
          + alphabet[((N // (26**5)) - 1) % 26]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**11:
      c = (
          alphabet[(N // (26**11)) - 1]
          + alphabet[(N // (26**10)) - 1]
          + alphabet[(N // (26**9)) - 1]
          + alphabet[(N // (26**8)) - 1]
          + alphabet[(N // (26**7)) - 1]
          + alphabet[(N // (26**6)) - 1]
          + alphabet[((N // (26**5)) - 1) % 26]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  elif N // 26 < 26**12:
      c = (
          alphabet[(N // (26**12)) - 1]
          + alphabet[(N // (26**11)) - 1]
          + alphabet[(N // (26**10)) - 1]
          + alphabet[(N // (26**9)) - 1]
          + alphabet[(N // (26**8)) - 1]
          + alphabet[(N // (26**7)) - 1]
          + alphabet[(N // (26**6)) - 1]
          + alphabet[((N // (26**5)) - 1) % 26]
          + alphabet[((N // (26**4)) - 1) % 26]
          + alphabet[((N // (26**3)) - 1) % 26]
          + alphabet[((N // (26**2)) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[((N // 26) - 1) % 26]
          + alphabet[(N - 1) % 26]
      )
  else:
      c = "a"
  print(c)
  
problem_description: Statement
  
  1000000000000001 dogs suddenly appeared under the roof of Roger's house, all
  of which he decided to keep. The dogs had been numbered 1 through
  1000000000000001, but he gave them new names, as follows:
  
    * the dogs numbered 1,2,\cdots,26 were respectively given the names `a`, `b`, ..., `z`;
    * the dogs numbered 27,28,29,\cdots,701,702  were respectively given the names `aa`, `ab`, `ac`, ..., `zy`, `zz`;
    * the dogs numbered 703,704,705,\cdots,18277,18278  were respectively given the names `aaa`, `aab`, `aac`, ..., `zzy`, `zzz`;
    * the dogs numbered 18279,18280,18281,\cdots,475253,475254  were respectively given the names `aaaa`, `aaab`, `aaac`, ..., `zzzy`, `zzzz`;
    * the dogs numbered 475255,475256,\cdots  were respectively given the names `aaaaa`, `aaaab`, ...;
    * and so on.
  
  To sum it up, the dogs numbered 1, 2, \cdots were respectively given the
  following names:
  
  `a`, `b`, ..., `z`, `aa`, `ab`, ..., `az`, `ba`, `bb`, ..., `bz`, ..., `za`,
  `zb`, ..., `zz`, `aaa`, `aab`, ..., `aaz`, `aba`, `abb`, ..., `abz`, ...,
  `zzz`, `aaaa`, ...
  
  Now, Roger asks you:
  
  "What is the name for the dog numbered N?"
samples: [{"input": "2", "output": "b\n    \n\n* * *"}, {"input": "27", "output": "aa\n    \n\n* * *"}, {"input": "123456789", "output": "jjddja"}]