Buggy python submission (verdict: Runtime Error):
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])

maxA = np.max(A)

if(maxA == np.min(A)):
    print(maxA)
else:
    #check = (np.unique(maxA // np.arange(1,maxA)))[::-1]
    #check = minA // np.arange(1,minA)
    check = np.arange(1,maxA)[::-1]
    for i in check:
        #全てのAに対してiで割り切れるか＝最大公約数
        #iで割り切れた数＝len(A)-1なら，残りの数にiをかけて最大公約数に出来る．
        num = np.sum((A % i>0))
        if(num < 2):
            #j = A[np.where(A % i>0)][0]
            #print(i,j,i*j//math.gcd(i,j))
            #if(i*j//fractions.gcd(i,j) < 10**9):
            print(i)
            break

Fixed submission:
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])

maxA = np.max(A)


if(maxA == np.min(A)):
    print(maxA)
elif(N==2):
    print(maxA)
else:
    R=np.zeros((N))
    L=np.zeros((N))
    M=np.zeros((N))

    L[0] = 0
    R[N-1] = 0
    for i in range(1,N):
        #0~i-1番目までの最大公約数
        L[i] = fractions.gcd(A[i-1],L[i-1])
        #i~N番
        R[N-1-i] = fractions.gcd(A[N-1-i+1],R[N-1-i+1])

    M[0] = R[0]
    M[-1] = L[-1]
    for i in range(1,N-1):
        M[i] = fractions.gcd(L[i],R[i])

    print("{}".format(int(np.max(M))))

Buggy python submission (verdict: Runtime Error):
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])

maxA = np.max(A)

if(maxA == np.min(A)):
    print(maxA)
else:
    check = np.unique(maxA // np.arange(1,maxA))
    #check = minA // np.arange(1,minA)
    for i in check[::-1]:
        #全てのAに対してiで割り切れるか＝最大公約数
        #iで割り切れた数＝len(A)-1なら，残りの数にiをかけて最大公約数に出来る．
        num = np.sum((A % i>0))
        if(num < 2):
            j = A[np.where(A % i>0)][0]
            #print(i,j,i*j//math.gcd(i,j))
            if(i*j//fractions.gcd(i,j) < 10**9):
                print(i)
                break


Fixed submission:
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])

maxA = np.max(A)


if(maxA == np.min(A)):
    print(maxA)
elif(N==2):
    print(maxA)
else:
    R=np.zeros((N))
    L=np.zeros((N))
    M=np.zeros((N))

    L[0] = 0
    R[N-1] = 0
    for i in range(1,N):
        #0~i-1番目までの最大公約数
        L[i] = fractions.gcd(A[i-1],L[i-1])
        #i~N番
        R[N-1-i] = fractions.gcd(A[N-1-i+1],R[N-1-i+1])

    M[0] = R[0]
    M[-1] = L[-1]
    for i in range(1,N-1):
        M[i] = fractions.gcd(L[i],R[i])

    print("{}".format(int(np.max(M))))

Buggy python submission (verdict: Runtime Error):
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])
minA = np.min(A)

if(minA == np.max(A)):
    print(minA)
else:
    check = np.unique(minA // np.arange(1,minA))
    #check = minA // np.arange(1,minA)
    for i in check[::-1]:
        #全てのAに対してiで割り切れるか＝最大公約数
        #iで割り切れた数＝len(A)-1なら，残りの数にiをかけて最大公約数に出来る．
        num = np.sum((A % i>0))
        if(num < 2):
            j = A[np.where(A % i>0)][0]
            #print(i,j,i*j//math.gcd(i,j))
            if(i*j//fractions.gcd(i,j) < 10**9):
                print(i)
                break

Fixed submission:
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])

maxA = np.max(A)


if(maxA == np.min(A)):
    print(maxA)
elif(N==2):
    print(maxA)
else:
    R=np.zeros((N))
    L=np.zeros((N))
    M=np.zeros((N))

    L[0] = 0
    R[N-1] = 0
    for i in range(1,N):
        #0~i-1番目までの最大公約数
        L[i] = fractions.gcd(A[i-1],L[i-1])
        #i~N番
        R[N-1-i] = fractions.gcd(A[N-1-i+1],R[N-1-i+1])

    M[0] = R[0]
    M[-1] = L[-1]
    for i in range(1,N-1):
        M[i] = fractions.gcd(L[i],R[i])

    print("{}".format(int(np.max(M))))

Buggy python submission (verdict: Runtime Error):
import numpy as np
import math

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])
minA = np.min(A)

if(minA == np.max(A)):
    print(minA)
else:
    check = np.unique(minA // np.arange(1,minA))
    #check = minA // np.arange(1,minA)
    for i in check[::-1]:
        #全てのAに対してiで割り切れるか＝最大公約数
        #iで割り切れた数＝len(A)-1なら，残りの数にiをかけて最大公約数に出来る．
        num = np.sum((A % i>0))
        if(num < 2):
            j = A[np.where(A % i>0)][0]
            #print(i,j,i*j//math.gcd(i,j))
            if(i*j//math.gcd(i,j) < 10**9):
                print(i)
                break

Fixed submission:
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])

maxA = np.max(A)


if(maxA == np.min(A)):
    print(maxA)
elif(N==2):
    print(maxA)
else:
    R=np.zeros((N))
    L=np.zeros((N))
    M=np.zeros((N))

    L[0] = 0
    R[N-1] = 0
    for i in range(1,N):
        #0~i-1番目までの最大公約数
        L[i] = fractions.gcd(A[i-1],L[i-1])
        #i~N番
        R[N-1-i] = fractions.gcd(A[N-1-i+1],R[N-1-i+1])

    M[0] = R[0]
    M[-1] = L[-1]
    for i in range(1,N-1):
        M[i] = fractions.gcd(L[i],R[i])

    print("{}".format(int(np.max(M))))

Buggy python submission (verdict: Runtime Error):
import numpy as np

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])
minA = np.min(A)

if(minA == np.max(A)):
    print(minA)
else:
    check = np.unique(minA // np.arange(1,minA))
    for i in check[::-1]:
        #全てのAに対してiで割り切れるか＝最大公約数
        #iで割り切れた数＝len(A)-1なら，残りの数にiをかけて最大公約数に出来る．
        if(np.sum((A % i>0)) < 2):
            print(i)
            break

Fixed submission:
import numpy as np
import fractions

N = int(input())
A = np.array([int(i) for i in (input()).split(" ")])

maxA = np.max(A)


if(maxA == np.min(A)):
    print(maxA)
elif(N==2):
    print(maxA)
else:
    R=np.zeros((N))
    L=np.zeros((N))
    M=np.zeros((N))

    L[0] = 0
    R[N-1] = 0
    for i in range(1,N):
        #0~i-1番目までの最大公約数
        L[i] = fractions.gcd(A[i-1],L[i-1])
        #i~N番
        R[N-1-i] = fractions.gcd(A[N-1-i+1],R[N-1-i+1])

    M[0] = R[0]
    M[-1] = L[-1]
    for i in range(1,N-1):
        M[i] = fractions.gcd(L[i],R[i])

    print("{}".format(int(np.max(M))))