Buggy python submission (verdict: Runtime Error):
import collections

n=int(input())
v=list(map(int,input().split()))
count=0
vo=[]
ve=[]
for i in range(n):
    if i%2==0:
        ve.append(v[i])
    else:
        vo.append(v[i])
e=collections.Counter(ve)
o=collections.Counter(vo)

emax=e.most_common()[0][0]
omax=o.most_common()[0][0]

if emax==omax:
    omax2 = o.most_common()[1][0]
    emax2 = e.most_common()[1][0]
    tempe=0
    tempo=0
    for i in range(n // 2):
        if ve[i] != emax2:
            tempe += 1
    for i in range(n // 2):
        if vo[i] != omax:
            tempe += 1
    for i in range(n // 2):
        if ve[i] != emax:
            tempo += 1
    for i in range(n // 2):
        if vo[i] != omax2:
            tempo += 1
    count=min(tempe,tempo)
else:
    for i in range(n // 2):
        if ve[i] != emax:
            count += 1
    for i in range(n // 2):
        if vo[i] != omax:
            count += 1

print(count)



Fixed submission:
import collections

n=int(input())
v=list(map(int,input().split()))
count=0
vo=[]
ve=[]
for i in range(n):
    if i%2==0:
        ve.append(v[i])
    else:
        vo.append(v[i])
e=collections.Counter(ve)
o=collections.Counter(vo)

emax=e.most_common()[0][0]
omax=o.most_common()[0][0]

if emax==omax:
    if e.most_common()[0][1]==len(ve) and o.most_common()[0][1]==len(vo):
        count=n//2
    else:
        omax2 = o.most_common()[1][0]
        emax2 = e.most_common()[1][0]
        tempe = 0
        tempo = 0
        for i in range(n // 2):
            if ve[i] != emax2:
                tempe += 1
        for i in range(n // 2):
            if vo[i] != omax:
                tempe += 1
        for i in range(n // 2):
            if ve[i] != emax:
                tempo += 1
        for i in range(n // 2):
            if vo[i] != omax2:
                tempo += 1
        count = min(tempe, tempo)
else:
    for i in range(n // 2):
        if ve[i] != emax:
            count += 1
    for i in range(n // 2):
        if vo[i] != omax:
            count += 1

print(count)
print()

Buggy python submission (verdict: Runtime Error):
import collections

n=int(input())
v=list(map(int,input().split()))
count=0
vo=[]
ve=[]
for i in range(n):
    if i%2==0:
        ve.append(v[i])
    else:
        vo.append(v[i])
e=collections.Counter(ve)
o=collections.Counter(vo)

emax=e.most_common()[0][0]
emax2=e.most_common()[1][0]
omax=o.most_common()[0][0]
omax2=o.most_common()[1][0]

if emax==omax:
    tempe=0
    tempo=0
    for i in range(n // 2):
        if ve[i] != emax2:
            tempe += 1
    for i in range(n // 2):
        if vo[i] != omax:
            tempe += 1
    for i in range(n // 2):
        if ve[i] != emax:
            tempo += 1
    for i in range(n // 2):
        if vo[i] != omax2:
            tempo += 1
    count=min(tempe,tempo)
else:
    for i in range(n // 2):
        if ve[i] != emax:
            count += 1
    for i in range(n // 2):
        if vo[i] != omax:
            count += 1
    
print(count)



Fixed submission:
import collections

n=int(input())
v=list(map(int,input().split()))
count=0
vo=[]
ve=[]
for i in range(n):
    if i%2==0:
        ve.append(v[i])
    else:
        vo.append(v[i])
e=collections.Counter(ve)
o=collections.Counter(vo)

emax=e.most_common()[0][0]
omax=o.most_common()[0][0]

if emax==omax:
    if e.most_common()[0][1]==len(ve) and o.most_common()[0][1]==len(vo):
        count=n//2
    else:
        omax2 = o.most_common()[1][0]
        emax2 = e.most_common()[1][0]
        tempe = 0
        tempo = 0
        for i in range(n // 2):
            if ve[i] != emax2:
                tempe += 1
        for i in range(n // 2):
            if vo[i] != omax:
                tempe += 1
        for i in range(n // 2):
            if ve[i] != emax:
                tempo += 1
        for i in range(n // 2):
            if vo[i] != omax2:
                tempo += 1
        count = min(tempe, tempo)
else:
    for i in range(n // 2):
        if ve[i] != emax:
            count += 1
    for i in range(n // 2):
        if vo[i] != omax:
            count += 1

print(count)
print()