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: n = int(input())
  list_all = list(map(int, input().split()))
  ans = 0
  list_even = []
  list_odd = []
  max_even = 0
  max_odd = 0
  for i in range(0, n, 2):
      list_odd.append(list_all[i])
  for i in range(1, n, 2):
      list_even.append(list_all[i])
  dic_odd = {}
  dic_even = {}
  li_odd = [0]
  li_even = [0]
  for i in list_odd:
      if i not in dic_odd:
          dic_odd[i] = 1
      else:
          dic_odd[i] += 1
  for i in list_even:
      if i not in dic_even:
          dic_even[i] = 1
      else:
          dic_even[i] += 1
  for i in dic_odd.keys():
      if dic_odd[i] > max_odd:
          max_odd = i
      li_odd.append(dic_odd[i])
  for i in dic_even.keys():
      if i > max_even:
          max_even = i
      li_even.append(dic_even[i])
  li_even.sort(reverse=True)
  li_odd.sort(reverse=True)
  if max_odd == max_even:
      print(n - li_even[0] - max(li_even[1], li_odd[1]))
  else:
      print(n - li_even[0] - li_odd[0])
  
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 /\\/\\/\\/."}]