Buggy python submission (verdict: Runtime Error):
import math
import sys

sys.setrecursionlimit(10**9)
N = int(input())
A = list(map(int, input().split()))
A.sort()
mx = 10 ** 9
idx = 0
g = []
for i in range(N-1):
    tmp = math.gcd(A[i], A[i+1])
    #print(A[i], A[i+1], tmp)
    if tmp < mx:
        mx = tmp
        idx = i
    g.append([tmp, i])
g.sort(key=lambda x:x[0])
print(g)
if N > 2:
    if g[0][1] + 1 == g[1][1]:
        A.remove(A[g[0][1]+1])
    else :
        tmp1 = math.gcd(A[g[0][1]], A[g[0][1]])
        tmp2 = math.gcd(A[g[0][1]+1], A[g[0][1]+1])
        #print(tmp1, tmp2)
        A.remove(A[g[0][1]] if tmp1 > tmp2 else A[g[0][1]+1])
else :
    A = [max(A)]
tmp = A[0]
for i in A:
    tmp = math.gcd(i, tmp)
print(tmp)


Fixed submission:
from fractions import gcd
N = int(input())
A = list(map(int, input().split()))

L = []
R = []
tl = A[0]
tr = A[-1]
for i in range(N):
  tl = gcd(tl, A[i])
  L.append(tl)
  tr = gcd(tr, A[N-1-i])
  R.append(tr)
mx = 1
R.reverse()
for i in range(N):
  tl = L[i-1] if i else R[i+1]
  tr = R[i+1] if i+1 < N else L[i-1]
  mx = max(mx, gcd(tl, tr))
print(mx)

Buggy python submission (verdict: Runtime Error):
import math
import sys

sys.setrecursionlimit(10**9)
N = int(input())
A = list(map(int, input().split()))
A.sort()
mx = 10 ** 9
idx = 0
g = []
for i in range(N-1):
    tmp = math.gcd(A[i], A[i+1])
    #print(A[i], A[i+1], tmp)
    if tmp < mx:
        mx = tmp
        idx = i
    g.append([tmp, i])
g.sort(key=lambda x:x[0])
#print(g)
if N > 2:
    if g[0][1] + 1 == g[1][1]:
        A.remove(A[g[0][1]+1])
    else :
        tmp1 = math.gcd(A[g[0][1]], A[g[1][1]])
        tmp2 = math.gcd(A[g[0][1]+1], A[g[1][1]])
        A.remove(A[g[0][1]] if tmp1 < tmp2 else A[g[0][1]+1])
else :
    A = [max(A)]
tmp = A[0]
for i in A:
    tmp = math.gcd(i, tmp)
#import functools
#print(functools.reduce(math.gcd, A))
print(tmp)

Fixed submission:
from fractions import gcd
N = int(input())
A = list(map(int, input().split()))

L = []
R = []
tl = A[0]
tr = A[-1]
for i in range(N):
  tl = gcd(tl, A[i])
  L.append(tl)
  tr = gcd(tr, A[N-1-i])
  R.append(tr)
mx = 1
R.reverse()
for i in range(N):
  tl = L[i-1] if i else R[i+1]
  tr = R[i+1] if i+1 < N else L[i-1]
  mx = max(mx, gcd(tl, tr))
print(mx)

Buggy python submission (verdict: Runtime Error):
import math
import sys

sys.setrecursionlimit(10**9)
N = int(input())
A = list(map(int, input().split()))
A.sort()
mx = 10 ** 9
idx = 0
g = []
for i in range(N-1):
    tmp = math.gcd(A[i], A[i+1])
    #print(A[i], A[i+1], tmp)
    if tmp < mx:
        mx = tmp
        idx = i
    g.append([tmp, i])
g.sort(key=lambda x:x[0])
#print(g)
if N > 2:
    if g[0][1] + 1 == g[1][1]:
        A.remove(A[g[0][1]+1])
    else :
        tmp1 = math.gcd(A[g[0][1]], A[g[1][1]])
        tmp2 = math.gcd(A[g[0][1]+1], A[g[1][1]])
        A.remove(A[g[0][1]] if tmp1 < tmp2 else A[g[0][1]+1])
else :
    A = [max(A)]
import functools

print(functools.reduce(math.gcd, A))


Fixed submission:
from fractions import gcd
N = int(input())
A = list(map(int, input().split()))

L = []
R = []
tl = A[0]
tr = A[-1]
for i in range(N):
  tl = gcd(tl, A[i])
  L.append(tl)
  tr = gcd(tr, A[N-1-i])
  R.append(tr)
mx = 1
R.reverse()
for i in range(N):
  tl = L[i-1] if i else R[i+1]
  tr = R[i+1] if i+1 < N else L[i-1]
  mx = max(mx, gcd(tl, tr))
print(mx)

Buggy python submission (verdict: Runtime Error):
import math

N = int(input())
A = list(map(int, input().split()))
A.sort()
mx = 10 ** 9
idx = 0
g = []
for i in range(N-1):
    tmp = math.gcd(A[i], A[i+1])
    #print(A[i], A[i+1], tmp)
    if tmp < mx:
        mx = tmp
        idx = i
    g.append([tmp, i])
g.sort(key=lambda x:x[0])
#print(g)
if N > 2:
    if g[0][1] + 1 == g[1][1]:
        A.remove(A[g[0][1]+1])
    else :
        tmp1 = math.gcd(A[g[0][1]], A[g[1][1]])
        tmp2 = math.gcd(A[g[0][1]+1], A[g[1][1]])
        #print(tmp1, tmp2)
        A.remove(A[g[0][1]] if tmp1 < tmp2 else A[g[0][1]+1])
else :
    A = [max(A)]
import functools

print(functools.reduce(math.gcd, A))


Fixed submission:
from fractions import gcd
N = int(input())
A = list(map(int, input().split()))

L = []
R = []
tl = A[0]
tr = A[-1]
for i in range(N):
  tl = gcd(tl, A[i])
  L.append(tl)
  tr = gcd(tr, A[N-1-i])
  R.append(tr)
mx = 1
R.reverse()
for i in range(N):
  tl = L[i-1] if i else R[i+1]
  tr = R[i+1] if i+1 < N else L[i-1]
  mx = max(mx, gcd(tl, tr))
print(mx)