Buggy python submission (verdict: Time Limit Exceeded):
import copy
n = int(input())
x = [int(i) for i in input().split()]

#ユークリッド互除法の関数の定義
def gcd(a,b):
    if b==0:return a
    return gcd(b,a%b)


def gcd_multi(n,x):
    if n==1:
        return x[0]
    else:
        element = gcd(x[0], x[1])
        if n==2:
            return element
        else:
            for i in range(2,n):
                element=gcd(element,x[i])
            return element

ans = []
for i in range(n):
    l = copy.deepcopy(x)
    del l[i]
    ans.append(gcd_multi(n-1,l))

print(max(ans))


Fixed submission:
import copy
n = int(input())
x = [int(i) for i in input().split()]

#ユークリッド互除法の関数の定義
def gcd(a,b):
    if b==0:return a
    return gcd(b,a%b)


def gcd_multi(n,x):
    if n==1:
        return x[0]
    else:
        element = gcd(x[0], x[1])
        if n==2:
            return element
        else:
            for i in range(2,n):
                element=gcd(element,x[i])
            return element

X=[0 for i in range(n)]
Y=[0 for i in range(n)]

for i in range(1,n):
    X[i]=gcd(X[i-1],x[i-1])

for i in range(n-1)[::-1]:
    Y[i]=gcd(Y[i+1],x[i+1])

Z=[gcd(X[i],Y[i]) for i in range(n)]
print(max(Z))

Buggy python submission (verdict: Time Limit Exceeded):
import collections

n = int(input())
a = [int(i) for i in input().split()]

def make_divisors(n):
    divisors = []
    for i in range(1, int(n**0.5)+1):
        if n % i == 0:
            divisors.append(i)
            if i != n // i:
                divisors.append(n//i)

    # divisors.sort()
    return divisors

list = []
for i in a:
    list.extend(make_divisors(i))

c = collections.Counter(list)
values, counts = zip(*c.most_common())

first = []
second = []
for value, count in zip(values,counts):
    if count == n:
        first.append(value)
    if count == n-1:
        second.append(value)
    if count < n-1:
        break

if len(second) == 0:
    print(max(first))

elif max(first) > max(second):
    print(max(first))

else:
    print(max(second))

Fixed submission:
import copy
n = int(input())
x = [int(i) for i in input().split()]

#ユークリッド互除法の関数の定義
def gcd(a,b):
    if b==0:return a
    return gcd(b,a%b)


def gcd_multi(n,x):
    if n==1:
        return x[0]
    else:
        element = gcd(x[0], x[1])
        if n==2:
            return element
        else:
            for i in range(2,n):
                element=gcd(element,x[i])
            return element

X=[0 for i in range(n)]
Y=[0 for i in range(n)]

for i in range(1,n):
    X[i]=gcd(X[i-1],x[i-1])

for i in range(n-1)[::-1]:
    Y[i]=gcd(Y[i+1],x[i+1])

Z=[gcd(X[i],Y[i]) for i in range(n)]
print(max(Z))

Buggy python submission (verdict: Time Limit Exceeded):
import collections

n = int(input())
a = [int(i) for i in input().split()]

def make_divisors(n):
    divisors = []
    for i in range(1, int(n**0.5)+1):
        if n % i == 0:
            divisors.append(i)
            if i != n // i:
                divisors.append(n//i)

    # divisors.sort()
    return divisors

list = []
for i in a:
    list.extend(make_divisors(i))

c = collections.Counter(list)
values, counts = zip(*c.most_common())

first = []
second = []
for value, count in zip(values,counts):
    if count == n:
        first.append(value)
    if count == n-1:
        second.append(value)

if len(second) == 0:
    print(max(first))

elif max(first) > max(second):
    print(max(first))

else:
    print(max(second))

Fixed submission:
import copy
n = int(input())
x = [int(i) for i in input().split()]

#ユークリッド互除法の関数の定義
def gcd(a,b):
    if b==0:return a
    return gcd(b,a%b)


def gcd_multi(n,x):
    if n==1:
        return x[0]
    else:
        element = gcd(x[0], x[1])
        if n==2:
            return element
        else:
            for i in range(2,n):
                element=gcd(element,x[i])
            return element

X=[0 for i in range(n)]
Y=[0 for i in range(n)]

for i in range(1,n):
    X[i]=gcd(X[i-1],x[i-1])

for i in range(n-1)[::-1]:
    Y[i]=gcd(Y[i+1],x[i+1])

Z=[gcd(X[i],Y[i]) for i in range(n)]
print(max(Z))