Buggy python submission (verdict: Runtime Error):
n = int(input())
l = list(map(int, input().split()))
l = list(set(l))
n = len(l)

from itertools import combinations
a = list(combinations(l, n-1))
#print(a)

from fractions import gcd
from functools import reduce

def gcd_list(numbers):
    return reduce(gcd, numbers)

g = []
for i in range(len(a)):
    g.append(gcd_list(a[i]))
#print(g)
print(max(g))

Fixed submission:
n = int(input())
l = list(map(int, input().split()))
#print(l)
l2 = list(reversed(l))
#print(l2)
#from itertools import combinations
#a = list(combinations(l, n-1))
#print(a)
from fractions import gcd
L, R = [0], [0]
for i in range(n):
    L.append(gcd(L[i],l[i]))
    R.append(gcd(R[i],l2[i]))
#print(L)
R = list(reversed(R))
#print(R)
g = []
for j in range(n):
    g.append(gcd(L[j],R[j+1]))
print(max(g))


#from functools import reduce

#def gcd_list(numbers):
#    return reduce(gcd, numbers)

Buggy python submission (verdict: Runtime Error):
n = int(input())
l = list(map(int, input().split()))
l = list(set(l))
n = len(l)

from itertools import combinations
a = list(combinations(l, n-1))
#print(a)

from fractions import gcd
from functools import reduce

def gcd_list(numbers):
    return reduce(gcd, numbers)

g = []
for i in range(len(a)):
    g.append(gcd_list(a[i]))

print(max(g))

Fixed submission:
n = int(input())
l = list(map(int, input().split()))
#print(l)
l2 = list(reversed(l))
#print(l2)
#from itertools import combinations
#a = list(combinations(l, n-1))
#print(a)
from fractions import gcd
L, R = [0], [0]
for i in range(n):
    L.append(gcd(L[i],l[i]))
    R.append(gcd(R[i],l2[i]))
#print(L)
R = list(reversed(R))
#print(R)
g = []
for j in range(n):
    g.append(gcd(L[j],R[j+1]))
print(max(g))


#from functools import reduce

#def gcd_list(numbers):
#    return reduce(gcd, numbers)

Buggy python submission (verdict: Runtime Error):
n = int(input())
l = list(map(int, input().split()))
l = list(set(l))
#print(l)

from itertools import combinations
a = list(combinations(l, n-1))
#print(a)

from fractions import gcd
from functools import reduce

def gcd_list(numbers):
    return reduce(gcd, numbers)

g = []
for i in range(len(a)):
    g.append(gcd_list(a[i]))

print(max(g))

Fixed submission:
n = int(input())
l = list(map(int, input().split()))
#print(l)
l2 = list(reversed(l))
#print(l2)
#from itertools import combinations
#a = list(combinations(l, n-1))
#print(a)
from fractions import gcd
L, R = [0], [0]
for i in range(n):
    L.append(gcd(L[i],l[i]))
    R.append(gcd(R[i],l2[i]))
#print(L)
R = list(reversed(R))
#print(R)
g = []
for j in range(n):
    g.append(gcd(L[j],R[j+1]))
print(max(g))


#from functools import reduce

#def gcd_list(numbers):
#    return reduce(gcd, numbers)

Buggy python submission (verdict: Runtime Error):
n = int(input())
l = list(map(int, input().split()))
l = set(l)
#print(l)

from itertools import combinations
a = list(combinations(l, n-1))
#print(a)

from fractions import gcd
from functools import reduce

def gcd_list(numbers):
    return reduce(gcd, numbers)

g = []
for i in range(len(a)):
    g.append(gcd_list(a[i]))

print(max(g))

Fixed submission:
n = int(input())
l = list(map(int, input().split()))
#print(l)
l2 = list(reversed(l))
#print(l2)
#from itertools import combinations
#a = list(combinations(l, n-1))
#print(a)
from fractions import gcd
L, R = [0], [0]
for i in range(n):
    L.append(gcd(L[i],l[i]))
    R.append(gcd(R[i],l2[i]))
#print(L)
R = list(reversed(R))
#print(R)
g = []
for j in range(n):
    g.append(gcd(L[j],R[j+1]))
print(max(g))


#from functools import reduce

#def gcd_list(numbers):
#    return reduce(gcd, numbers)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
l = list(map(int, input().split()))

from itertools import combinations
a = list(combinations(l, n-1))
#print(a)

from fractions import gcd
from functools import reduce

def gcd_list(numbers):
    return reduce(gcd, numbers)

g = []
for i in range(len(a)):
    g.append(gcd_list(a[i]))

print(max(g))

Fixed submission:
n = int(input())
l = list(map(int, input().split()))
#print(l)
l2 = list(reversed(l))
#print(l2)
#from itertools import combinations
#a = list(combinations(l, n-1))
#print(a)
from fractions import gcd
L, R = [0], [0]
for i in range(n):
    L.append(gcd(L[i],l[i]))
    R.append(gcd(R[i],l2[i]))
#print(L)
R = list(reversed(R))
#print(R)
g = []
for j in range(n):
    g.append(gcd(L[j],R[j+1]))
print(max(g))


#from functools import reduce

#def gcd_list(numbers):
#    return reduce(gcd, numbers)