output_description: Print the abbreviation for the N-th round of ABC.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N
attempt: #!/usr/bin
  # -*- coding="utf-8" -*-
  
  n = int(input())
  if n >= 64:
      a = 64
  elif n >= 32:
      a = 32
  elif n >= 16:
      a = 16
  elif n >= 8:
      a = 8
  elif n >= 4:
      a = 4
  elif n >= 2:
      a = 2
  else:
      a = 1
  print(a)
  
problem_description: Statement
  
  This contest, _AtCoder Beginner Contest_ , is abbreviated as _ABC_.
  
  When we refer to a specific round of ABC, a three-digit number is appended
  after ABC. For example, ABC680 is the 680th round of ABC.
  
  What is the abbreviation for the N-th round of ABC? Write a program to output
  the answer.
samples: [{"input": "100", "output": "ABC100\n    \n\nThe 100th round of ABC is ABC100.\n\n* * *"}, {"input": "425", "output": "ABC425\n    \n\n* * *"}, {"input": "999", "output": "ABC999"}]