Buggy python submission (verdict: Time Limit Exceeded):
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
all_gcd = [0]*N

def calc_gcd(idx,array):
  gcd_arr = []
  for i in range(idx):
    if gcd_arr == []:
      gcd_arr.append(array[i])
    else:
      gcd_arr.append(gcd(gcd_arr[-1],array[i]))
  for j in range(idx+1,N,1):
    if gcd_arr == []:
      gcd_arr.append(array[j])
    else:
      gcd_arr.append(gcd(gcd_arr[-1],array[j]))
  return(gcd_arr[-1])

for k in range(N):
  all_gcd[k] = calc_gcd(k,array)

print(max(all_gcd))

Fixed submission:
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
all_gcd = [0]*N
#calc from start to end
gcd_L = [array[0]]
for i in range(N-1):
  gcd_L.append(gcd(gcd_L[-1],array[i+1]))
  
#calc from end to start
gcd_R = [array[-1]]
for j in range(N-1,0,-1):
  gcd_R.append(gcd(gcd_R[-1],array[j-1]))
  
gcd_arr = []
  
for idx in range(N):
  if idx==0:
    gcd_arr.append(gcd_R[-2])
  elif idx==N-1:
    gcd_arr.append(gcd_L[-2])
  else:
    gcd_arr.append(gcd(gcd_L[idx-1],gcd_R[N-1-idx-1]))
print(max(gcd_arr))

Buggy python submission (verdict: Runtime Error):
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
gcd_arr = [array[0]]

for i in range(N-1):
  gcd_arr.append(gcd(gcd_arr[-1],array[i+1]))
  
gcd_arr.reverse()

for i in range(N):
  if gcd_arr[i+1] > gcd_arr[i]:
    break
    
if (N-i-1) == 1:
  new_gcd1 = array[1]
  for i in range(N-2):
    new_gcd1 = gcd(new_gcd1,array[i+2])
  array.pop(1)
  new_gcd2 = array[0]
  for i in range(N-2):
    new_gcd2 = gcd(new_gcd2,array[i+1])
  print(max(new_gcd1,new_gcd2))
  
else:
  array.pop(N-i-1)  
  new_gcd = array[0]
  for i in range(N-2):
    new_gcd = gcd(new_gcd,array[i+1])

  print(new_gcd)


Fixed submission:
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
all_gcd = [0]*N
#calc from start to end
gcd_L = [array[0]]
for i in range(N-1):
  gcd_L.append(gcd(gcd_L[-1],array[i+1]))
  
#calc from end to start
gcd_R = [array[-1]]
for j in range(N-1,0,-1):
  gcd_R.append(gcd(gcd_R[-1],array[j-1]))
  
gcd_arr = []
  
for idx in range(N):
  if idx==0:
    gcd_arr.append(gcd_R[-2])
  elif idx==N-1:
    gcd_arr.append(gcd_L[-2])
  else:
    gcd_arr.append(gcd(gcd_L[idx-1],gcd_R[N-1-idx-1]))
print(max(gcd_arr))

Buggy python submission (verdict: Runtime Error):
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
gcd_arr = [array[0]]

for i in range(N-1):
  gcd_arr.append(gcd(gcd_arr[-1],array[i+1]))

gcd_arr.reverse()

for i in range(N):
  if gcd_arr[i+1] > gcd_arr[i]:
    break
    
array.pop(N-i-1)

new_gcd = array[0]
for i in range(N-2):
  new_gcd = gcd(new_gcd,array[i+1])

print(new_gcd)


Fixed submission:
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
all_gcd = [0]*N
#calc from start to end
gcd_L = [array[0]]
for i in range(N-1):
  gcd_L.append(gcd(gcd_L[-1],array[i+1]))
  
#calc from end to start
gcd_R = [array[-1]]
for j in range(N-1,0,-1):
  gcd_R.append(gcd(gcd_R[-1],array[j-1]))
  
gcd_arr = []
  
for idx in range(N):
  if idx==0:
    gcd_arr.append(gcd_R[-2])
  elif idx==N-1:
    gcd_arr.append(gcd_L[-2])
  else:
    gcd_arr.append(gcd(gcd_L[idx-1],gcd_R[N-1-idx-1]))
print(max(gcd_arr))

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

N = int(input())
num_arr = list(map(int,input().split()))

def GCD_modify(a,b):
  if a==0:
    return b
  elif b==0:
    return a
  else:
    return fractions.gcd(a,b)

def RE_F(i):
  L,R = 0,0
  for j in range(i):
    L = GCD_modify(L,num_arr[j])
  for k in range(N-i-1):
    R = GCD_modify(R,num_arr[k+i+1])
    #print(R)
  return GCD_modify(L,R)

GCD_arr = [RE_F(l) for l in range(N)]

print(max(GCD_arr))

Fixed submission:
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
all_gcd = [0]*N
#calc from start to end
gcd_L = [array[0]]
for i in range(N-1):
  gcd_L.append(gcd(gcd_L[-1],array[i+1]))
  
#calc from end to start
gcd_R = [array[-1]]
for j in range(N-1,0,-1):
  gcd_R.append(gcd(gcd_R[-1],array[j-1]))
  
gcd_arr = []
  
for idx in range(N):
  if idx==0:
    gcd_arr.append(gcd_R[-2])
  elif idx==N-1:
    gcd_arr.append(gcd_L[-2])
  else:
    gcd_arr.append(gcd(gcd_L[idx-1],gcd_R[N-1-idx-1]))
print(max(gcd_arr))

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

N = int(input())
num_arr = list(map(int,input().split()))

def GCD_modify(a,b):
  if a==0:
    return b
  elif b==0:
    return a
  else:
    return fractions.gcd(a,b)

def RE_F(i):
  L,R = 0,0
  for j in range(i):
    L = GCD_modify(L,num_arr[j])
  for k in range(N-i-1):
    R = GCD_modify(R,num_arr[k+i+1])
    #print(R)
  return GCD_modify(L,R)

GCD_arr = [RE_F(l) for l in range(N)]

print(max(GCD_arr))

Fixed submission:
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
all_gcd = [0]*N
#calc from start to end
gcd_L = [array[0]]
for i in range(N-1):
  gcd_L.append(gcd(gcd_L[-1],array[i+1]))
  
#calc from end to start
gcd_R = [array[-1]]
for j in range(N-1,0,-1):
  gcd_R.append(gcd(gcd_R[-1],array[j-1]))
  
gcd_arr = []
  
for idx in range(N):
  if idx==0:
    gcd_arr.append(gcd_R[-2])
  elif idx==N-1:
    gcd_arr.append(gcd_L[-2])
  else:
    gcd_arr.append(gcd(gcd_L[idx-1],gcd_R[N-1-idx-1]))
print(max(gcd_arr))

Buggy python submission (verdict: Runtime Error):
import math
from functools import reduce

def gcd(*numbers):
    return reduce(math.gcd, numbers)

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

print(gcd(*arr))

Fixed submission:
from fractions import gcd
N = int(input())
array = list(map(int,input().split()))
all_gcd = [0]*N
#calc from start to end
gcd_L = [array[0]]
for i in range(N-1):
  gcd_L.append(gcd(gcd_L[-1],array[i+1]))
  
#calc from end to start
gcd_R = [array[-1]]
for j in range(N-1,0,-1):
  gcd_R.append(gcd(gcd_R[-1],array[j-1]))
  
gcd_arr = []
  
for idx in range(N):
  if idx==0:
    gcd_arr.append(gcd_R[-2])
  elif idx==N-1:
    gcd_arr.append(gcd_L[-2])
  else:
    gcd_arr.append(gcd(gcd_L[idx-1],gcd_R[N-1-idx-1]))
print(max(gcd_arr))