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

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

data_ans=[]
data1=[A[0]]
data2=[A[N-1]]
l=A[0]
m=A[N-1]
for i in range(1,N-3):
  l=gcd(l,A[i])
  m=gcd(m,A[N-i])
  data1.append(l)
  data2.append(m)
l=gcd(l,A[N-1])
m=gcd(m,A[1])
data_ans.append(l)
data_ans.append(m)
for i in range(0,N-3):
  data_ans.append(data1[i],data2[N-2-i])
print(max(data_ans))

Fixed submission:
def gcd(a,b):
  if a==b:
    return a 
  elif a<b:
    a,b=b,a
    while a%b!=0:
      a,b=b,a%b
    return b
  else:
    while a%b!=0:
      a,b=b,a%b
    return b
 

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

data_ans=[]
data1=[A[0]]
data2=[A[N-1]]
l=A[0]
m=A[N-1]
for i in range(1,N-2):
  l=gcd(l,A[i])
  m=gcd(m,A[N-i-1])
  data1.append(l)
  data2.append(m)
l=gcd(l,A[N-2])
m=gcd(m,A[1])
data_ans.append(l)
data_ans.append(m)
for i in range(0,N-2):
  data_ans.append(gcd(data1[i],data2[N-3-i]))
print(max(data_ans))

Buggy python submission (verdict: Time Limit Exceeded):
N=int(input())
A=list(map(int,input().split()))
mi_A=min(A)
count=0
bad=0
for j in range(N-1,-1,-1):
  if A[j]%mi_A==0:
    count=count+1
  elif bad==1:
    break
  else:
    bad=bad+1
if count>=N-1:
  ans=mi_A 
else:
  for i in range(mi_A//2+1,0,-1):
    if mi_A%i==0:
      count=0
      bad=0
      for j in range(N-1,-1,-1):
        if A[j]%i==0:
          count=count+1
        elif bad==1:
          break
        else:
          bad=bad+1
      if count>=N-1:
        ans=i
        break
A.remove(min(A))
if len(A)==N-1:
  mi_A=min(A)
  count=0
  bad=0
  for j in range(0,N-1):
    if A[j]%mi_A==0:
      count=count+1
    else:
      break
  if count>=N-1:
    ans=mi_A    
  else:
    for i in range(mi_A//2+1,ans,-1):
      if mi_A%i==0:   
        count=0
        bad=0
        for j in range(0,N-1):        
          if A[j]%i==0:
            count=count+1         
          else:
            break
        if (count>=N-1) and (i>ans):
          ans=i
          break
print(ans)


Fixed submission:
def gcd(a,b):
  if a==b:
    return a 
  elif a<b:
    a,b=b,a
    while a%b!=0:
      a,b=b,a%b
    return b
  else:
    while a%b!=0:
      a,b=b,a%b
    return b
 

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

data_ans=[]
data1=[A[0]]
data2=[A[N-1]]
l=A[0]
m=A[N-1]
for i in range(1,N-2):
  l=gcd(l,A[i])
  m=gcd(m,A[N-i-1])
  data1.append(l)
  data2.append(m)
l=gcd(l,A[N-2])
m=gcd(m,A[1])
data_ans.append(l)
data_ans.append(m)
for i in range(0,N-2):
  data_ans.append(gcd(data1[i],data2[N-3-i]))
print(max(data_ans))

Buggy python submission (verdict: Time Limit Exceeded):
N=int(input())
A=list(map(int,input().split()))
mi_A=min(A)
count=0
bad=0
for j in range(N-1,-1,-1):
  if A[j]%mi_A==0:
    count=count+1
  elif bad==1:
    break
  else:
    bad=bad+1
if count>=N-1:
  ans=mi_A 
else:
  for i in range(mi_A//2+1,0,-1):
    if mi_A%i==0:
      count=0
      bad=0
      for j in range(N-1,-1,-1):
        if A[j]%i==0:
          count=count+1
        elif bad==1:
          break
        else:
          bad=bad+1
      if count>=N-1:
        ans=i
        break
A.remove(min(A))
if len(A)==N-1:
  mi_A=min(A)
  count=0
  bad=0
  for j in range(0,N-1):
    if A[j]%mi_A==0:
      count=count+1
    else:
      break
  if count>=N-1:
    ans=mi_A    
  else:
    for i in range(mi_A//2+1,0,-1):
      if mi_A%i==0:   
        count=0
        bad=0
        for j in range(0,N-1):        
          if A[j]%i==0:
            count=count+1         
          else:
            break
        if (count>=N-1) and (i>ans):
          ans=i
          break
print(ans)


Fixed submission:
def gcd(a,b):
  if a==b:
    return a 
  elif a<b:
    a,b=b,a
    while a%b!=0:
      a,b=b,a%b
    return b
  else:
    while a%b!=0:
      a,b=b,a%b
    return b
 

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

data_ans=[]
data1=[A[0]]
data2=[A[N-1]]
l=A[0]
m=A[N-1]
for i in range(1,N-2):
  l=gcd(l,A[i])
  m=gcd(m,A[N-i-1])
  data1.append(l)
  data2.append(m)
l=gcd(l,A[N-2])
m=gcd(m,A[1])
data_ans.append(l)
data_ans.append(m)
for i in range(0,N-2):
  data_ans.append(gcd(data1[i],data2[N-3-i]))
print(max(data_ans))

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

mi_A=min(A)

count=0
bad=0
for j in range(N-1,-1,-1):
  if A[j]%mi_A==0:
    count=count+1
  elif bad==1:
    break
  else:
    bad=bad+1
if count>=N-1:
  ans=mi_A
  
else:
  for i in range(mi_A//2+1,0,-1):
    if mi_A%i==0:
      count=0
      bad=0
      for j in range(N-1,-1,-1):
        if A[j]%i==0:
          count=count+1
        elif bad==1:
          break
        else:
          bad=bad+1
      if count>=N-1:
        ans=i
        break


A.remove(min(A))
if len(A)==N-1:
  mi_A=min(A)
  count=0
  bad=0
  for j in range(0,N-1):
    if A[j]%mi_A==0:
      count=count+1
    else:
      break
  if count>=N-1:
    ans=mi_A
    
  else:
    for i in range(mi_A//2+1,0,-1):
      if mi_A%i==0:
   
        count=0
        bad=0
        for j in range(0,N-1):
        
          if A[j]%i==0:
            count=count+1
         
          else:
        
            break
        if (count>=N-1) and (i>ans):
          ans=i
          break
  
print(ans)

Fixed submission:
def gcd(a,b):
  if a==b:
    return a 
  elif a<b:
    a,b=b,a
    while a%b!=0:
      a,b=b,a%b
    return b
  else:
    while a%b!=0:
      a,b=b,a%b
    return b
 

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

data_ans=[]
data1=[A[0]]
data2=[A[N-1]]
l=A[0]
m=A[N-1]
for i in range(1,N-2):
  l=gcd(l,A[i])
  m=gcd(m,A[N-i-1])
  data1.append(l)
  data2.append(m)
l=gcd(l,A[N-2])
m=gcd(m,A[1])
data_ans.append(l)
data_ans.append(m)
for i in range(0,N-2):
  data_ans.append(gcd(data1[i],data2[N-3-i]))
print(max(data_ans))