Buggy python submission (verdict: Runtime Error):
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (N//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (mix(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))


Fixed submission:
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (N//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (min(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))

Buggy python submission (verdict: Runtime Error):
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (n//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (mix(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))


Fixed submission:
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (N//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (min(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))

Buggy python submission (verdict: Runtime Error):
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
dic1[0] = 0
dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
#elif len(dic1) == 1 and len(dic2) == 1:
#    print (n//2)
#elif len(dic1) == 1:
#    print (N-dic1[0][1]-dic2[1][1])
#elif len(dic2) == 1:
#    print (N-dic1[1][1]-dic2[0][1])
else:
    print (mix(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))


Fixed submission:
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (N//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (min(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))

Buggy python submission (verdict: Runtime Error):
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
#elif len(dic1) == 1 and len(dic2) == 1:
#    print (n//2)
#elif len(dic1) == 1:
#    print (N-dic1[0][1]-dic2[1][1])
#elif len(dic2) == 1:
#    print (N-dic1[1][1]-dic2[0][1])
else:
    print (mix(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))


Fixed submission:
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (N//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (min(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))

Buggy python submission (verdict: Runtime Error):
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (n//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (max(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))


Fixed submission:
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (N//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (min(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())

lst = list(map(int, input().split()))
lst1 = lst[::2]
lst2 = lst[1::2]

#print (lst, lst1, lst2)

a1 = 0
a2 = 0
b1 = 0
b2 = 0
for i in range(N//2):
    a = lst1.count(lst1[i])
    b = lst2.count(lst2[i])
    if a > a1:
        c = lst1[i]
        a1, a2 = a, a1
    elif a > a2 and lst1[i] != c:
        a2 = a
    if b > b1:
        d = lst2[i]
        b1, b2 = b, b1
    elif b > b2 and lst2[i] != d:
        b2 = b

#print(a1, a2, b1, b2)
if c == d:
    ans = max(a1+b2, a2+b1)
else:
    ans =a1 + b1

print (N - ans)

Fixed submission:
N = int(input())
lst = list(map(int, input().split()))

dic1, dic2 = dict(), dict()
#dic1[0] = 0
#dic2[0] = 0
for i, x in enumerate(lst):
    dic = dic1 if  i%2 == 0 else dic2
    if x not in dic.keys():
        dic[x] = 1
    else:
        dic[x] += 1
#print (type(dic1))
dic1 =sorted(dic1.items(), key = lambda x:x[1])[::-1]
dic2 =sorted(dic2.items(), key = lambda x:x[1])[::-1]

#print (type(dic2))
#print (dic1)
#print (dic2)

if dic1[0][0] != dic2[0][0]:
    print (N-dic1[0][1]-dic2[0][1])
elif len(dic1) == 1 and len(dic2) == 1:
    print (N//2)
elif len(dic1) == 1:
    print (N-dic1[0][1]-dic2[1][1])
elif len(dic2) == 1:
    print (N-dic1[1][1]-dic2[0][1])
else:
    print (min(N-dic1[0][1]-dic2[1][1], N-dic1[1][1]-dic2[0][1]))