Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
v = list(map(int,input().split()))
v_odd = []
v_even = []
for i in range(n//2):
    v_odd.append(v[2*i])
    v_even.append(v[2*i+1])
p1 = 0
p2 = 0
q1 = 0
q2 = 0
o_max = -1
e_max = -1
for i in range(n//2):
    a = v_odd[i]
    b = v_even[i]
    x = v_odd.count(a)
    y = v_even.count(b)
    if p1 <= x:
        if o_max != a:
            o_max = a
            p2 = p1
            p1 = x
    else:
        if x > p2:
            p2 = x
    if q1 <= y:
        if e_max != b:
            e_max = b
            q2 = q1
            q1 = y
    else:
        if y > q2:
            q2 = y
s = p1 + q1
if o_max == e_max:
    s = max(p1+q2,q1+p2)
ans = n-s
print(ans)

Fixed submission:
n = int(input())
v = list(map(int,input().split()))
v_odd = []
v_even = []
d_odd = {}
d_even = {}
o = []
e = []
for i in range(n//2):
    a = v[2*i]
    b = v[2*i+1]
    if a in d_odd:
        d_odd[a] += 1
    else:
        d_odd[a] = 1
        o.append(a)
    if b in d_even:
        d_even[b] += 1
    else:
        d_even[b] = 1
        e.append(b)
O = 0
E = 0
o_max = 0
o_second = 0
e_max = 0
e_second = 0
for i in o:
    x = d_odd[i]
    if x >= o_max:
        O = i
        o_max = x
d_odd.pop(O)
o.remove(O)
for i in o:
    x = d_odd[i]
    if x >= o_second:
        o_second = x
for i in e:
    y = d_even[i]
    if y >= e_max:
        E = i
        e_max = y
d_even.pop(E)
e.remove(E)
for i in e:
    y = d_even[i]
    if y >= e_second:
        e_second = y
if O == E:
    m = max(o_max+e_second,e_max+o_second)
else:
    m = o_max + e_max
print(n-m)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
v = list(map(int,input().split()))
v_odd = []
v_even = []
for i in range(n//2):
    v_odd.append(v[2*i])
    v_even.append(v[2*i+1])
p1 = 0
p2 = 0
q1 = 0
q2 = 0
o_max = -1
e_max = -1
for i in range(n//2):
    a = v_odd[i]
    b = v_even[i]
    x = v_odd.count(a)
    y = v_even.count(b)
    if p1 <= x:
        if o_max != a:
            o_max = a
            p2 = p1
            p1 = x
    else:
        if x > p2:
            p2 = x
    if q1 <= y:
        if e_max != b:
            e_max = b
            q2 = q1
            q1 = y
    else:
        if y > q2:
            q2 = y
s = p1 + q1
if p1 == q1:
    if o_max == e_max:
        s = max(p2,q2) + p1
elif p1 > q2:
    if o_max == e_max:
        s = p1 + q2
else: 
    if o_max == e_max:
        s = p2 + q1
ans = n - s
print(ans)
  
        

Fixed submission:
n = int(input())
v = list(map(int,input().split()))
v_odd = []
v_even = []
d_odd = {}
d_even = {}
o = []
e = []
for i in range(n//2):
    a = v[2*i]
    b = v[2*i+1]
    if a in d_odd:
        d_odd[a] += 1
    else:
        d_odd[a] = 1
        o.append(a)
    if b in d_even:
        d_even[b] += 1
    else:
        d_even[b] = 1
        e.append(b)
O = 0
E = 0
o_max = 0
o_second = 0
e_max = 0
e_second = 0
for i in o:
    x = d_odd[i]
    if x >= o_max:
        O = i
        o_max = x
d_odd.pop(O)
o.remove(O)
for i in o:
    x = d_odd[i]
    if x >= o_second:
        o_second = x
for i in e:
    y = d_even[i]
    if y >= e_max:
        E = i
        e_max = y
d_even.pop(E)
e.remove(E)
for i in e:
    y = d_even[i]
    if y >= e_second:
        e_second = y
if O == E:
    m = max(o_max+e_second,e_max+o_second)
else:
    m = o_max + e_max
print(n-m)

Buggy python submission (verdict: Runtime Error):
n = int(input())
v = list(map(int,input().split()))
v_odd = []
v_even = []
for i in range(n//2):
    v_odd.append()
    v_even.append()
p1 = 0
p2 = 0
q1 = 0
q2 = 0
o_max = -1
e_max = -1
for i in range(n//2):
    a = v_odd[i]
    b = v_even[i]
    x = v_odd.count(a)
    y = v_even.count(b)
    if p1 <= x:
        if o_max != a:
            o_max = a
            p2 = p1
            p1 = x
    else:
        if x > p2:
            p2 = x
    if q1 <= y:
        if e_max != b:
            e_max = b
            q2 = q1
            q1 = y
    else:
        if y > q2:
            q2 = y
s = p1 + q1
if p1 == q1:
    if o_max == e_max:
        s = max(p2,q2) + p1
elif p1 > q2:
    if o_max == e_max:
        s = p1 + q2
else: 
    if o_max == e_max:
        s = p2 + q1
ans = n - s
print(ans)
  
        


Fixed submission:
n = int(input())
v = list(map(int,input().split()))
v_odd = []
v_even = []
d_odd = {}
d_even = {}
o = []
e = []
for i in range(n//2):
    a = v[2*i]
    b = v[2*i+1]
    if a in d_odd:
        d_odd[a] += 1
    else:
        d_odd[a] = 1
        o.append(a)
    if b in d_even:
        d_even[b] += 1
    else:
        d_even[b] = 1
        e.append(b)
O = 0
E = 0
o_max = 0
o_second = 0
e_max = 0
e_second = 0
for i in o:
    x = d_odd[i]
    if x >= o_max:
        O = i
        o_max = x
d_odd.pop(O)
o.remove(O)
for i in o:
    x = d_odd[i]
    if x >= o_second:
        o_second = x
for i in e:
    y = d_even[i]
    if y >= e_max:
        E = i
        e_max = y
d_even.pop(E)
e.remove(E)
for i in e:
    y = d_even[i]
    if y >= e_second:
        e_second = y
if O == E:
    m = max(o_max+e_second,e_max+o_second)
else:
    m = o_max + e_max
print(n-m)