code: 
  '''simple docstring'''
  
  
  
  
  
  from collections import Counter
  def   snake_case_       (							_a     :							list[int]			):
        return sum(socks_by_color // 2 for socks_by_color in Counter(_a			).values()			)
  
  
  if __name__ == "__main__":
       import doctest
  
       doctest.testmod()
  
       A           =   [int(x) for x in input("Enter socks by color :").rstrip().split()]
       print(F"""sock_merchant({colors}) = {sock_merchant(colors)}""")
  
  
style_context: 
  '''simple docstring'''
  
  
  
  
  
  def   snake_case_       (							_a     :							int = 1_000			):
        return sum(i for i in range(_a			) if i % 3 == 0 or i % 5 == 0			)
  
  
  if __name__ == "__main__":
       print(F"""{solution() = }""")
  
  