Buggy python submission (verdict: Runtime Error):
from copy import copy
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)

n = int(input())
A = list(map(int, input().split()))

if n==2:
	print(max(A))
	quit()

a = list(set(A))

gcds = []
for i in range(len(a)):
	temp = copy(a)
	temp.pop(i)

	num1 = temp[0]
	num2 = temp[1]
	result = gcd(num1, num2)
	for j in range(2, len(temp)):
		if result in gcds:
			break
		result = gcd(result, temp[j])
	
	if result not in gcds:
		gcds.append(result)

gcds = sorted(gcds)

if len(gcds)==1:
	print(gcds[0])
else:
	gcds = sorted(gcds)
	if len(a)==len(A):
		print(gcds[1])
	else:
		print(gcds[0])

Fixed submission:
from copy import copy
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)

def factor(n):
	factors = [1, n]
	i=2
	while i*i <= n:
		if n%i==0:
			factors.append(i)
			factors.append(n//i)
		i+=1

	return factors

n = int(input())
A = list(map(int, input().split()))

if n==2:
	print(max(A))
	quit()

gcd1 = 0
fac1 = sorted(factor(A[0]),reverse=True)
for i in range(len(fac1)):
	count = 0
	for j in range(1, n):
		if A[j]%fac1[i]!=0:
			count += 1
			if count >= 2:
				break
	if count <= 1:
		gcd1 = fac1[i]
		break

fac2 = sorted(factor(A[1]),reverse=True)
gcd2 = 0
for i in range(len(fac2)):
	count = 0
	for j in range(2, n):
		if A[j]%fac2[i]!=0:
			count += 1
			break
	if count <= 0:
		gcd2 = fac2[i]
		break

print(max(gcd1, gcd2))

Buggy python submission (verdict: Runtime Error):
from copy import copy
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)

n = int(input())
a = list(map(int, input().split()))

if n==2:
	print(max(a))
	quit()

a = list(set(a))

gcds = []
for i in range(len(a)):
	temp = copy(a)
	temp.pop(i)

	num1 = temp[0]
	num2 = temp[1]
	result = gcd(num1, num2)
	for j in range(2, len(temp)):
		if result in gcds:
			break
		result = gcd(result, temp[j])
	
	if result not in gcds:
		gcds.append(result)

gcds = sorted(gcds)

if len(gcds)==1:
	print(gcds[0])
else:
	gcds = sorted(gcds)
	print(gcds[1])

Fixed submission:
from copy import copy
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)

def factor(n):
	factors = [1, n]
	i=2
	while i*i <= n:
		if n%i==0:
			factors.append(i)
			factors.append(n//i)
		i+=1

	return factors

n = int(input())
A = list(map(int, input().split()))

if n==2:
	print(max(A))
	quit()

gcd1 = 0
fac1 = sorted(factor(A[0]),reverse=True)
for i in range(len(fac1)):
	count = 0
	for j in range(1, n):
		if A[j]%fac1[i]!=0:
			count += 1
			if count >= 2:
				break
	if count <= 1:
		gcd1 = fac1[i]
		break

fac2 = sorted(factor(A[1]),reverse=True)
gcd2 = 0
for i in range(len(fac2)):
	count = 0
	for j in range(2, n):
		if A[j]%fac2[i]!=0:
			count += 1
			break
	if count <= 0:
		gcd2 = fac2[i]
		break

print(max(gcd1, gcd2))

Buggy python submission (verdict: Runtime Error):
from copy import copy
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)

n = int(input())
a = list(map(int, input().split()))

if n==2:
	print(max(a))
	quit()

a = list(set(a))

gcds = []
for i in range(len(a)):
	temp = copy(a)
	temp.pop(i)

	num1 = temp[0]
	num2 = temp[1]
	result = gcd(num1, num2)
	for j in range(2, len(temp)):
		if result in gcds:
			break
		result = gcd(result, temp[j])
	
	if result not in gcds:
		gcds.append(result)

if len(gcds)==1:
	print(gcds[0])
else:
	gcds = sorted(gcds)
	print(gcds[1])

Fixed submission:
from copy import copy
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)

def factor(n):
	factors = [1, n]
	i=2
	while i*i <= n:
		if n%i==0:
			factors.append(i)
			factors.append(n//i)
		i+=1

	return factors

n = int(input())
A = list(map(int, input().split()))

if n==2:
	print(max(A))
	quit()

gcd1 = 0
fac1 = sorted(factor(A[0]),reverse=True)
for i in range(len(fac1)):
	count = 0
	for j in range(1, n):
		if A[j]%fac1[i]!=0:
			count += 1
			if count >= 2:
				break
	if count <= 1:
		gcd1 = fac1[i]
		break

fac2 = sorted(factor(A[1]),reverse=True)
gcd2 = 0
for i in range(len(fac2)):
	count = 0
	for j in range(2, n):
		if A[j]%fac2[i]!=0:
			count += 1
			break
	if count <= 0:
		gcd2 = fac2[i]
		break

print(max(gcd1, gcd2))

Buggy python submission (verdict: Runtime Error):
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)


n = int(input())
a = list(map(int, input().split()))

if n==2:
	print(max(a))
	quit()

a = sorted(a)

gcds = []
for i in range(n-1):
	for j in range(1, n):
		cur = gcd(a[i], a[j])
		count = 0
		for k in range(n):
			if a[k]%cur != 0:
				count += 1
				if count>=2:
					break
		if count <= 1:
			gcds.append(cur)

gcds = list(set(gcds))
if len(gcds)==1:
	print(gcds[0])
else:
	gcds = sorted(gcds)
	print(gcds[1])

Fixed submission:
from copy import copy
def gcd(a, b):
	if a%b == 0:
		return b
	else:
		return gcd(b, a%b)

def factor(n):
	factors = [1, n]
	i=2
	while i*i <= n:
		if n%i==0:
			factors.append(i)
			factors.append(n//i)
		i+=1

	return factors

n = int(input())
A = list(map(int, input().split()))

if n==2:
	print(max(A))
	quit()

gcd1 = 0
fac1 = sorted(factor(A[0]),reverse=True)
for i in range(len(fac1)):
	count = 0
	for j in range(1, n):
		if A[j]%fac1[i]!=0:
			count += 1
			if count >= 2:
				break
	if count <= 1:
		gcd1 = fac1[i]
		break

fac2 = sorted(factor(A[1]),reverse=True)
gcd2 = 0
for i in range(len(fac2)):
	count = 0
	for j in range(2, n):
		if A[j]%fac2[i]!=0:
			count += 1
			break
	if count <= 0:
		gcd2 = fac2[i]
		break

print(max(gcd1, gcd2))