text: import math
  
  raw_a = raw_input('a = ...\n') 
  raw_b = raw_input('b = ...\n') 
  a = int(raw_a)
  b = int(raw_b)
  
  # function outline (test the return statement)
  #def hypotenuse(a,b):
  #    return 0.0
  
  # argument validation
  #def hypotenuse(a,b):
  #    print a
  #    print b
  #    return 0.0
  
  # compute the sum of argument squares
  #def hypotenuse(a,b):
  #    print a
  #    print b
  #    sum = a**2 + b**2
  #    print sum
  #    return 0.0
  
  # compute square root of the sum
  #def hypotenuse(a,b):
  #    print a
  #    print b
  #    sum = a**2 + b**2
  #    print sum
  #    hypotenuse = math.sqrt(sum)
  #    return hypotenuse
  
  # final version (remove scaffolding)
  def hypotenuse(a,b):
      sum = a**2 + b**2
      hypotenuse = math.sqrt(sum)
      return hypotenuse
  
  # final version 2 (simplified)
  #def hypotenuse(a,b):
  #    return math.sqrt(a**2 + b**2)
  
  #print hypotenuse(3,4)
  print hypotenuse(a,b)
  
  