output_description: Print the minimum number of elements that needs to be replaced.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      n
      v_1 v_2 ... v_n
attempt: def check_num(numlist, num):
      index = len(numlist)
      if num in numlist:
          indexs = [i for i, x in enumerate(numlist) if x == num]
          for i in range(len(indexs)):
              if indexs[i] % 2 == 0:
                  index = indexs[i]
      if index == len(numlist):
          numlist.append(num)
          numlist.append(1)
      else:
          numlist[index + 1] += 1
  
      return numlist
  
  
  input = [input() for i in range(2)]
  n = int(input[0])
  input = list(map(int, input[1].split()))
  
  numlist = []
  for i in range(n):
      numlist = check_num(numlist, input[i])
  
  del numlist[::2]
  numlistlen = len(numlist)
  if numlistlen == 1:
      if n % 2 == 0:
          print(n // 2)
      else:
          print((n - 1) // 2)
  else:
      maxindex = numlist.index(max(numlist))
      maxval = numlist[maxindex]
      del numlist[maxindex]
      # max_t_index = numlist.index(max(numlist))
      # max_t_val = numlist[max_t_index]
      print(n - maxval - 1)
  
problem_description: Statement
  
  A sequence a_1,a_2,... ,a_n is said to be /\/\/\/ when the following
  conditions are satisfied:
  
    * For each i = 1,2,..., n-2, a_i = a_{i+2}.
    * Exactly two different numbers appear in the sequence.
  
  You are given a sequence v_1,v_2,...,v_n whose length is even. We would like
  to make this sequence /\/\/\/ by replacing some of its elements. Find the
  minimum number of elements that needs to be replaced.
samples: [{"input": "4\n    3 1 3 2", "output": "1\n    \n\nThe sequence 3,1,3,2 is not /\\/\\/\\/, but we can make it /\\/\\/\\/ by replacing\none of its elements: for example, replace the fourth element to make it\n3,1,3,1.\n\n* * *"}, {"input": "6\n    105 119 105 119 105 119", "output": "0\n    \n\nThe sequence 105,119,105,119,105,119 is /\\/\\/\\/.\n\n* * *"}, {"input": "4\n    1 1 1 1", "output": "2\n    \n\nThe elements of the sequence 1,1,1,1 are all the same, so it is not /\\/\\/\\/."}]