Buggy python submission (verdict: Runtime Error):
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = a[0]
        count00, count01 = n/2, 0
    else:
        c = Counter(l)
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = a[1]
        count10, count11 = n/2, 0
    else:
        c = Counter(l)
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)


Fixed submission:
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = a[0]
        count00, count01 = int(n/2), 0
    else:
        c = Counter(a[::2])
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = a[1]
        count10, count11 = int(n/2), 0
    else:
        c = Counter(a[1::2])
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)

Buggy python submission (verdict: Runtime Error):
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = b0[0]
        count00, count01 = n/2, 0
    else:
        c = Counter(l)
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = b1[0]
        count10, count11 = n/2, 0
    else:
        c = Counter(l)
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)



Fixed submission:
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = a[0]
        count00, count01 = int(n/2), 0
    else:
        c = Counter(a[::2])
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = a[1]
        count10, count11 = int(n/2), 0
    else:
        c = Counter(a[1::2])
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = [int(i) for i in input().split()]
def ans(l):
    max = 0
    b = set(l)
    if len(b)==1:
        return 0
    else:
        for i in b:
            s = l.count(i)
            if s>max:
                max = s
        return n/2 - max
if len(set(a)) == 1:
    p = int(n/2)
else:
    p = int(ans(a[::2]) + ans(a[1::2]))
print(p)


Fixed submission:
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = a[0]
        count00, count01 = int(n/2), 0
    else:
        c = Counter(a[::2])
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = a[1]
        count10, count11 = int(n/2), 0
    else:
        c = Counter(a[1::2])
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = [int(i) for i in input().split()]
def ans(l):
    max = 0
    b = set(l)
    for i in b:
        s = l.count(i)
        if s>max:
            max = s
    return n/2 - max
if len(set(a)) == 1:
    p = int(n/2)
else:
    p = int(ans(a[::2]) + ans(a[1::2]))
print(p)


Fixed submission:
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = a[0]
        count00, count01 = int(n/2), 0
    else:
        c = Counter(a[::2])
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = a[1]
        count10, count11 = int(n/2), 0
    else:
        c = Counter(a[1::2])
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = [int(i) for i in input().split()]
def ans(l):
    max = 0
    b = set(l)
    for i in b:
        s = l.count(i)
        if s>max:
            max = s
    return n/2 - max
if a.count(a[0])==n:
    p = int(n/2)
else:
    p = int(ans(a[::2]) + ans(a[1::2]))
print(p)


Fixed submission:
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = a[0]
        count00, count01 = int(n/2), 0
    else:
        c = Counter(a[::2])
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = a[1]
        count10, count11 = int(n/2), 0
    else:
        c = Counter(a[1::2])
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = [int(i) for i in input().split()]
def ans(l):
    max = 0
    for i in l:
        s = l.count(i)
        if s>max:
            max = s
    return n/2 - max
if a.count(a[0])==n:
    p = int(n/2)
else:
    p = int(ans(a[::2]) + ans(a[1::2]))
print(p)


Fixed submission:
from collections import Counter
n = int(input())
a = [int(i) for i in input().split()]

if len(set(a)) == 1:
    p = int(n/2)
else:
    b0 = set(a[::2])
    if len(b0)==1:
        q0 = 0
        mark00 = a[0]
        count00, count01 = int(n/2), 0
    else:
        c = Counter(a[::2])
        q0 =  int(n/2) - c.most_common(1)[0][1]
        mark00, mark01 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count00, count01 = c.most_common(2)[0][1], c.most_common(2)[1][1]

    b1 = set(a[1::2])
    if len(b1)==1:
        q1 = 0
        mark10 = a[1]
        count10, count11 = int(n/2), 0
    else:
        c = Counter(a[1::2])
        q1 =  int(n/2) - c.most_common(1)[0][1]
        mark10, mark11 = c.most_common(2)[0][0], c.most_common(2)[1][0]
        count10, count11 = c.most_common(2)[0][1], c.most_common(2)[1][1]
    if mark00==mark10:
        if count00+count01>count10+count11:
            p = n - (count00+count01)
        else:
            p = n - (count10+count11)
    else:
        p = n - (count00 + count10)

print(p)