Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
Odd = []
OddCount = []
Even = []
EvenCount = []
list = input().split(" ")

for i in range(n):
    if i%2==1:
        x = int(list[i])
        if x in Odd:
            OddCount[Odd.index(x)] += 1
        else:
            OddCount.append(1)
            Odd.append(x)
    else:
        x = int(list[i])
        if x in Even:
            EvenCount[Even.index(x)] += 1
        else:
            EvenCount.append(1)
            Even.append(x)

O1c = max(OddCount)
O1n = Odd[OddCount.index(O1c)]
Odd[OddCount.index(O1c)] = 0
OddCount[OddCount.index(O1c)] = 0

E1c = max(EvenCount)
E1n = Even[EvenCount.index(E1c)]
Even[EvenCount.index(E1c)] = 0
EvenCount[EvenCount.index(E1c)] = 0

if O1c > E1c:
    if O1n != E1n:
        print(n-O1c-E1c)
    else:
        print(n-O1c-max(EvenCount))
elif O1c < E1c:
    if O1n != E1n:
        print(n-O1c-E1c)
    else:
        print(n-max(OddCount)-E1c)
else:
    if O1n == E1n:
        if max(EvenCount) > max(OddCount):
            print(n-O1c-max(EvenCount))
        else:
            print(n-max(OddCount)-E1c)
    else:
        print(n-O1c-E1c)


Fixed submission:
import collections

def answer(list,n):
    Even = collections.Counter(list[::2]).most_common(2)
    Odd = collections.Counter(list[1::2]).most_common(2)

    if Even[0][0] != Odd[0][0]:
        return n - Even[0][1] - Odd[0][1]
    else:
        if len(Even) == 1 or len(Odd) == 1:
            return n // 2
        else:
            return n - max(Even[0][1]+Odd[1][1],Even[1][1]+Odd[0][1])

N = int(input())
list = input().split(" ")
print(answer(list,N))

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
Odd = []
OddCount = []
Even = []
EvenCount = []
list = input()

for i in range(n):
    if i%2==1:
        x = int(list.split(" ")[i])
        if x in Odd:
            OddCount[Odd.index(x)] += 1
        else:
            OddCount.append(1)
            Odd.append(x)
    else:
        x = int(list.split(" ")[i])
        if x in Even:
            EvenCount[Even.index(x)] += 1
        else:
            EvenCount.append(1)
            Even.append(x)

O1c = max(OddCount)
O1n = Odd[OddCount.index(O1c)]
Odd[OddCount.index(O1c)] = 0
OddCount[OddCount.index(O1c)] = 0

E1c = max(EvenCount)
E1n = Even[EvenCount.index(E1c)]
Even[EvenCount.index(E1c)] = 0
EvenCount[EvenCount.index(E1c)] = 0

if O1c > E1c:
    if O1n != E1n:
        print(n-O1c-E1c)
    else:
        print(n-O1c-max(EvenCount))
elif O1c < E1c:
    if O1n != E1n:
        print(n-O1c-E1c)
    else:
        print(n-max(OddCount)-E1c)
else:
    if O1n == E1n:
        if max(EvenCount) > max(OddCount):
            print(n-O1c-max(EvenCount))
        else:
            print(n-max(OddCount)-E1c)
    else:
        print(n-O1c-E1c)


Fixed submission:
import collections

def answer(list,n):
    Even = collections.Counter(list[::2]).most_common(2)
    Odd = collections.Counter(list[1::2]).most_common(2)

    if Even[0][0] != Odd[0][0]:
        return n - Even[0][1] - Odd[0][1]
    else:
        if len(Even) == 1 or len(Odd) == 1:
            return n // 2
        else:
            return n - max(Even[0][1]+Odd[1][1],Even[1][1]+Odd[0][1])

N = int(input())
list = input().split(" ")
print(answer(list,N))

Buggy python submission (verdict: Time Limit Exceeded):
import collections

n = int(input())
OddList = []
EvenList = []
list = input()

for i in range(n):
    if i%2==1:
        OddList.append(int(list.split(" ")[i]))
    else:
        EvenList.append(int(list.split(" ")[i]))

Odd = collections.Counter(OddList)
Even = collections.Counter(EvenList)

if (Odd.most_common(1)[0][0] == Even.most_common(1)[0][0]):
    if (len(Odd) == 1)and(len(Even) == 1):
        print(len(OddList))
    elif (len(Odd) == 1)and(len(Even) > 1):
        print(len(EvenList) - Even.most_common(2)[1][0])
    elif (len(Odd) > 1)and(len(Even) == 1):
        print(len(OddList) - Odd.most_common(2)[1][0])
    else:
        if Odd.most_common(2)[1][1] >= Even.most_common(2)[1][1]:
            print(len(OddList)*2 - Odd.most_common(2)[1][1] - Even.most_common(2)[0][1])
        else:
            print(len(OddList)*2 - Odd.most_common(2)[0][1] - Even.most_common(2)[1][1])
else:
    print(len(OddList)*2-Odd.most_common(1)[0][1]-Even.most_common(1)[0][1])


Fixed submission:
import collections

def answer(list,n):
    Even = collections.Counter(list[::2]).most_common(2)
    Odd = collections.Counter(list[1::2]).most_common(2)

    if Even[0][0] != Odd[0][0]:
        return n - Even[0][1] - Odd[0][1]
    else:
        if len(Even) == 1 or len(Odd) == 1:
            return n // 2
        else:
            return n - max(Even[0][1]+Odd[1][1],Even[1][1]+Odd[0][1])

N = int(input())
list = input().split(" ")
print(answer(list,N))

Buggy python submission (verdict: Time Limit Exceeded):
import collections

n = int(input())
OddList = []
EvenList = []
list = input()

for i in range(n):
    if i%2==1:
        OddList.append(int(list.split(" ")[i]))
    else:
        EvenList.append(int(list.split(" ")[i]))

Odd = collections.Counter(OddList)
Even = collections.Counter(EvenList)

if (Odd.most_common()[0][0] == Even.most_common()[0][0]):
    if (len(Odd) == 1)and(len(Even) == 1):
        print(len(OddList))
    elif (len(Odd) == 1)and(len(Even) > 1):
        print(len(EvenList) - Even.most_common()[1][0])
    elif (len(Odd) > 1)and(len(Even) == 1):
        print(len(OddList) - Odd.most_common()[1][0])
    else:
        if Odd.most_common()[1][1] >= Even.most_common()[1][1]:
            print(len(OddList) - Odd.most_common()[1][1] + len(EvenList) - Even.most_common()[0][1])
        else:
            print(len(OddList) - Odd.most_common()[0][1] + len(EvenList) - Even.most_common()[1][1])
else:
    print(len(OddList)+len(EvenList)-Odd.most_common()[0][1]-Even.most_common()[0][1])


Fixed submission:
import collections

def answer(list,n):
    Even = collections.Counter(list[::2]).most_common(2)
    Odd = collections.Counter(list[1::2]).most_common(2)

    if Even[0][0] != Odd[0][0]:
        return n - Even[0][1] - Odd[0][1]
    else:
        if len(Even) == 1 or len(Odd) == 1:
            return n // 2
        else:
            return n - max(Even[0][1]+Odd[1][1],Even[1][1]+Odd[0][1])

N = int(input())
list = input().split(" ")
print(answer(list,N))