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())
  v = list(map(int,input().split()))
  
  dic0 = [0 for i in range(10**5+1)]
  dic1 = [0 for i in range(10**5+1)]
  for i in range(n):
      if i%2==0:    
          dic0[v[i]] += 1
      if i%2==1:
          dic1[v[i]] += 1
  
  MX0_1 = max(dic0)
  MX1_1 = max(dic1)
  
  li0 = []
  li1 = []
  
  
  for i in range(10**5+1):
      if dic0[i]>10:
          #print(i,dic0[i])
      if dic1[i]>10:
          #print(i,dic1[i],"\n")
      
      if dic0[i] == MX0_1:
          li0.append(i)
          dic0[i] = 0
      if dic1[i] == MX1_1:
          li1.append(i)
          dic1[i] = 0
  
  # print(li0,li1)
  # print(MX0_1,MX0_1)
  
  if len(li0)>=2 or len(li1)>=2:
      print(n-MX0_1-MX1_1)
  elif li0[0] == li1[0]:
      if MX0_1+max(dic1) >= MX1_1+max(dic0):
          print(n-MX0_1-max(dic1))
      else:
          print(n-MX1_1-max(dic0))
          print(1/0)
  
  elif li0[0] != li1[0]:
      print(n-MX0_1-MX1_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 /\\/\\/\\/."}]