output_description: Print the number of different kinds of colors of the paint cans.
  
  * * *
input_description: The input is given from Standard Input in the following format:
  
      
      
      a b c
attempt: icase = 46
  if icase == 46:
      a = list(map(int, input().split()))
      icnt = 1
      if a[0] != a[1]:
          icnt = icnt + 1
      if a[0] != a[2] and a[1] != a[2]:
          icnt = icnt + 1
      print(icnt)
  
problem_description: Statement
  
  AtCoDeer the deer recently bought three paint cans. The color of the one he
  bought two days ago is a, the color of the one he bought yesterday is b, and
  the color of the one he bought today is c. Here, the color of each paint can
  is represented by an integer between 1 and 100, inclusive.
  
  Since he is forgetful, he might have bought more than one paint can in the
  same color. Count the number of different kinds of colors of these paint cans
  and tell him.
samples: [{"input": "3 1 4", "output": "3\n    \n\nThree different colors: 1, 3, and 4.\n\n* * *"}, {"input": "3 3 33", "output": "2\n    \n\nTwo different colors: 3 and 33."}]