Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
nodd = 0
neven = 0
for x in range(0,n//2):
    Vodd.append(V[2*x])
    Veven.append(V[2*x+1]) 

for x in set(Vodd):
    k = Vodd.count(x)
    if k > nodd:
        nodd = k
        odd_number = x
for x in set(Veven):
    k = Veven.count(x)
    if k > neven:
        neven = k
        even_number = x

answer = n - nodd - neven

if odd_number == even_number:
    Vodd = [i for i in Vodd if not i == odd_number]
    Veven = [i for i in Veven if not i == even_number]
    a = 0
    b = 0
    if not Vodd is []:
        for x in set(Vodd):
            k = Vodd.count(x)
            if k > a:
                a = k
    if not Veven is []:
        for x in set(Veven):
            k = Veven.count(x)
            if k > a:
                a = k
    answer = min(n - a - neven,n - nodd - b)

print(answer)

Fixed submission:
from collections import Counter
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
for x in range(0,n//2):
    Vodd.append(V[2*x])
    Veven.append(V[2*x+1]) 

oddcounts = Counter(Vodd).most_common(2)
evencounts = Counter(Veven).most_common(2)

number = n - oddcounts[0][1] - evencounts[0][1]

if oddcounts[0][0] == evencounts[0][0]:
    if len(oddcounts) == 1:
        a = 0
    else:
        a = oddcounts[1][1]
    if len(evencounts) == 1:
        b = 0
    else:
        b = evencounts[1][1]
    number = min(n - a - evencounts[0][1],n - oddcounts[0][1] - b)

print(number)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
for x in range(0,n//2):
    Vodd.append(V[2*x])
    Veven.append(V[2*x+1]) 
oddcounts = {x:Vodd.count(x) for x in set(Vodd)}
evencounts = {x:Veven.count(x) for x in set(Veven)}

max_odd = max(oddcounts.items(),key=lambda x:x[1])
max_even = max(evencounts.items(),key=lambda x:x[1])

number = n - max_odd[1] - max_even[1]

if max_odd[0] == max_even[0]:
    if len(oddcounts) == 1:
        a = 0
    else:
        del oddcounts[max_odd[0]]
        max_odd1 = max(oddcounts.items(),key=lambda x:x[1])
        a = max_odd1[1]
    if len(evencounts) == 1:
        b = 0
    else:
        del evencounts[max_even[0]]
        max_even1 = max(oddcounts.items(),key=lambda x:x[1])
        b = max_even1[1]
    number = min(n - a - max_even[1],n - max_odd[1] - b)

print(number)

Fixed submission:
from collections import Counter
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
for x in range(0,n//2):
    Vodd.append(V[2*x])
    Veven.append(V[2*x+1]) 

oddcounts = Counter(Vodd).most_common(2)
evencounts = Counter(Veven).most_common(2)

number = n - oddcounts[0][1] - evencounts[0][1]

if oddcounts[0][0] == evencounts[0][0]:
    if len(oddcounts) == 1:
        a = 0
    else:
        a = oddcounts[1][1]
    if len(evencounts) == 1:
        b = 0
    else:
        b = evencounts[1][1]
    number = min(n - a - evencounts[0][1],n - oddcounts[0][1] - b)

print(number)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
nodd = 0
neven = 0
for x in range(0,n,2):
    Vodd.append(V[x])
    Veven.append(V[x+1]) 
oddcounts = {x:Vodd.count(x) for x in Vodd}
evencounts = {x:Veven.count(x) for x in Veven}

max_odd = max(oddcounts.items(),key=lambda x:x[1])
max_even = max(evencounts.items(),key=lambda x:x[1])

number = n - max_odd[1] - max_even[1]

if max_odd[0] == max_even[0]:
    if len(oddcounts) == 1:
        a = 0
    else:
        del oddcounts[max_odd[0]]
        max_odd1 = max(oddcounts.items(),key=lambda x:x[1])
        a = max_odd1[1]
    if len(evencounts) == 1:
        b = 0
    else:
        del evencounts[max_even[0]]
        max_even1 = max(oddcounts.items(),key=lambda x:x[1])
        b = max_even1[1]
    number = min(n - a - max_even[1],n - max_odd[1] - b)

print(number)

Fixed submission:
from collections import Counter
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
for x in range(0,n//2):
    Vodd.append(V[2*x])
    Veven.append(V[2*x+1]) 

oddcounts = Counter(Vodd).most_common(2)
evencounts = Counter(Veven).most_common(2)

number = n - oddcounts[0][1] - evencounts[0][1]

if oddcounts[0][0] == evencounts[0][0]:
    if len(oddcounts) == 1:
        a = 0
    else:
        a = oddcounts[1][1]
    if len(evencounts) == 1:
        b = 0
    else:
        b = evencounts[1][1]
    number = min(n - a - evencounts[0][1],n - oddcounts[0][1] - b)

print(number)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
nodd = 0
neven = 0
for x in range(0,n,2):
    Vodd.append(V[x])
    Veven.append(V[x+1]) 
oddcounts = {x:Vodd.count(x) for x in Vodd}
evencounts = {x:Veven.count(x) for x in Veven}

y = sorted(oddcounts.items(),key=lambda x:x[1],reverse=True)
z = sorted(evencounts.items(),key=lambda x:x[1],reverse=True)

number = len(Vodd) - y[0][1] + len(Veven) - z[0][1]

if y[0][0] == z[0][0]:
    if len(y) == 1:
        y.append((0,0))
    if len(z) == 1:
        z.append((0,0))
    number = min(len(Vodd)-y[1][1]+len(Veven)-z[0][1],len(Vodd)-y[0][1]+len(Veven)-z[1][1])

print(number)

Fixed submission:
from collections import Counter
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
for x in range(0,n//2):
    Vodd.append(V[2*x])
    Veven.append(V[2*x+1]) 

oddcounts = Counter(Vodd).most_common(2)
evencounts = Counter(Veven).most_common(2)

number = n - oddcounts[0][1] - evencounts[0][1]

if oddcounts[0][0] == evencounts[0][0]:
    if len(oddcounts) == 1:
        a = 0
    else:
        a = oddcounts[1][1]
    if len(evencounts) == 1:
        b = 0
    else:
        b = evencounts[1][1]
    number = min(n - a - evencounts[0][1],n - oddcounts[0][1] - b)

print(number)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
nodd = 0
neven = 0
for x in range(0,n,2):
    Vodd.append(V[x])
    Veven.append(V[x+1]) 
oddcounts = {x:Vodd.count(x) for x in set(Vodd)}
evencounts = {x:Veven.count(x) for x in set(Veven)}

y = sorted(oddcounts.items(),key=lambda x:x[1],reverse=True)
z = sorted(evencounts.items(),key=lambda x:x[1],reverse=True)

number = len(Vodd) - y[0][1] + len(Veven) - z[0][1]

if y[0][0] == z[0][0]:
    if len(y) == 1:
        y.append((0,0))
    if len(z) == 1:
        z.append((0,0))
    number = min(len(Vodd)-y[1][1]+len(Veven)-z[0][1],len(Vodd)-y[0][1]+len(Veven)-z[1][1])

print(number)

Fixed submission:
from collections import Counter
n = int(input())
V = list(map(int,input().split()))
Vodd = list()
Veven = list()
for x in range(0,n//2):
    Vodd.append(V[2*x])
    Veven.append(V[2*x+1]) 

oddcounts = Counter(Vodd).most_common(2)
evencounts = Counter(Veven).most_common(2)

number = n - oddcounts[0][1] - evencounts[0][1]

if oddcounts[0][0] == evencounts[0][0]:
    if len(oddcounts) == 1:
        a = 0
    else:
        a = oddcounts[1][1]
    if len(evencounts) == 1:
        b = 0
    else:
        b = evencounts[1][1]
    number = min(n - a - evencounts[0][1],n - oddcounts[0][1] - b)

print(number)