output_description: Print the largest square number not exceeding N.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N
attempt: X = int(input())
    print(int(X**0.5)**2)
problem_description: Statement
  
  Find the largest square number not exceeding N. Here, a _square number_ is an
  integer that can be represented as the square of an integer.
samples: [{"input": "10", "output": "9\n    \n\n10 is not square, but 9 = 3 \u00d7 3 is. Thus, we print 9.\n\n* * *"}, {"input": "81", "output": "81\n    \n\n* * *"}, {"input": "271828182", "output": "271821169"}]