output_description: Print the area of a circle of radius r, divided by the area of a circle of
  radius 1, as an integer.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      r
attempt: print(int(input().split()) ** 2)
  
problem_description: Statement
  
  Given is an integer r.
  
  How many times is the area of a circle of radius r larger than the area of a
  circle of radius 1?
  
  It can be proved that the answer is always an integer under the constraints
  given.
samples: [{"input": "2", "output": "4\n    \n\nThe area of a circle of radius 2 is 4 times larger than the area of a circle\nof radius 1.\n\nNote that output must be an integer - for example, `4.0` will not be accepted.\n\n* * *"}, {"input": "100", "output": "10000"}]