Buggy python submission (verdict: Runtime Error):
import collections
n = int(input())
vlist = list(map(int,input().split()))
list_odd = [vlist[i] for i in  range(n) if i % 2 ==0]
list_even = [vlist[i] for i in range(n) if i % 2 !=0]

def f(list1):
  ary1 = [[0,i] for i in range(10**5+2)]
  len1 = len(list1)
  for i in range(len1):
    ary1[list1[i]+1][0] += 1
  ary2 = sorted(ary1)
  return [ary2[-1],ary2[-2]]

list3 = f(list_odd)
list4 = f(list_even)


if list3[0][1] != list4[0][1]:
  print(n-list3[0][0]-list4[0][0])
else:
  x1 = n-list3[0][0]-list4[1][0]
  x2 = n-list3[1][0]-list4[0][0]
  print(min(x1,x2)


Fixed submission:
import collections
n = int(input())
vlist = list(map(int,input().split()))
list_odd = [vlist[i] for i in  range(n) if i % 2 ==0]
list_even = [vlist[i] for i in range(n) if i % 2 !=0]

def f(list1):
  ary1 = [[0,i] for i in range(10**5+2)]
  len1 = len(list1)
  for i in range(len1):
    ary1[list1[i]+1][0] += 1
  ary2 = sorted(ary1)
  return [ary2[-1],ary2[-2]]

list3 = f(list_odd)
list4 = f(list_even)


if list3[0][1] != list4[0][1]:
  print(n-list3[0][0]-list4[0][0])
else:
  x1 = n-list3[0][0]-list4[1][0]
  x2 = n-list3[1][0]-list4[0][0]
  print(min(x1,x2))

Buggy python submission (verdict: Runtime Error):
import collections
n = int(input())
vlist = list(map(int,input().split()))
list_odd = [vlist[i] for i in  range(n) if i % 2 ==0]
list_even = [vlist[i] for i in range(n) if i % 2 !=0]

def f(list1):
  ary1 = [0] * 10**5
  ary1 = [[0,i] for i in range(10**5+1)]
  len1 = len(list1)
  for i in range(len1):
    ary1[list1[i]+1][0] += 1
  ary2 = sorted(ary1)
  return [ary2[-1],ary2[-2]]

list3 = f(list_odd)
list4 = f(list_even)

print(n-list3[0][0]-list4[0][0])


Fixed submission:
import collections
n = int(input())
vlist = list(map(int,input().split()))
list_odd = [vlist[i] for i in  range(n) if i % 2 ==0]
list_even = [vlist[i] for i in range(n) if i % 2 !=0]

def f(list1):
  ary1 = [[0,i] for i in range(10**5+2)]
  len1 = len(list1)
  for i in range(len1):
    ary1[list1[i]+1][0] += 1
  ary2 = sorted(ary1)
  return [ary2[-1],ary2[-2]]

list3 = f(list_odd)
list4 = f(list_even)


if list3[0][1] != list4[0][1]:
  print(n-list3[0][0]-list4[0][0])
else:
  x1 = n-list3[0][0]-list4[1][0]
  x2 = n-list3[1][0]-list4[0][0]
  print(min(x1,x2))

Buggy python submission (verdict: Runtime Error):
import collections
n = int(input())
vlist = list(map(int,input().split()))
list_odd = [vlist[i] for i in  range(n) if i % 2 ==0]
list_even = [vlist[i] for i in range(n) if i % 2 !=0]

def f(list1):
  ary1 = [0] * 10**5
  ary1 = [[0,i] for i in range(10**5+1)]
  len1 = len(list1)
  for i in range(len1):
    ary1[list1[i]+1][0] += 1
  ary2 = sorted(ary1)
  return [ary2[-1],ary2[-2]]

list3 = f(list_odd)
list4 = f(list_even)

if list3[0][1] != list4[0][1]:
  print(n-list3[0][0]-list4[0][0])
else:
  if list3[0][0] >= list4[0][0]:
    print(n-list3[0][0]-list4[1][0])
  else:
    print(n-list3[1][0]-list4[0][0])

Fixed submission:
import collections
n = int(input())
vlist = list(map(int,input().split()))
list_odd = [vlist[i] for i in  range(n) if i % 2 ==0]
list_even = [vlist[i] for i in range(n) if i % 2 !=0]

def f(list1):
  ary1 = [[0,i] for i in range(10**5+2)]
  len1 = len(list1)
  for i in range(len1):
    ary1[list1[i]+1][0] += 1
  ary2 = sorted(ary1)
  return [ary2[-1],ary2[-2]]

list3 = f(list_odd)
list4 = f(list_even)


if list3[0][1] != list4[0][1]:
  print(n-list3[0][0]-list4[0][0])
else:
  x1 = n-list3[0][0]-list4[1][0]
  x2 = n-list3[1][0]-list4[0][0]
  print(min(x1,x2))