Buggy python submission (verdict: Time Limit Exceeded):
from math import gcd

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

buf = A[0]
for a in A[1:]:
    buf = gcd(buf, a)
if buf == 1:
    npcf = False
    for i in range(N - 1):
        for j in range(i + 1, N):
            if gcd(A[i], A[j]) != 1:
                npcf = True
                break
        if npcf:
            break
    
    if not npcf:
        print('pairwise coprime')
    else:
        print('setwise coprime')
else:
    print('not coprime')

Fixed submission:
from math import gcd

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

prime = list(range(max(A) + 1))

for i in range(2, len(prime)):
    if prime[i] != i:
        continue
    for j in range(i, len(prime), i):
        if prime[j] != j:
            continue
        prime[j] = i

used = set()
pc = True
for a in A:
    used_this = set()
    while a != 1:
        div = prime[a]
        if div in used:
            pc = False
            break
        used_this.add(div)
        a //= div
    used.update(used_this)

if pc:
    print('pairwise coprime')
    exit()

buf = A[0]
for a in A[1:]:
    buf = gcd(buf, a)
if buf == 1:
    print('setwise coprime')
else:
    print('not coprime')

Buggy python submission (verdict: Time Limit Exceeded):
from math import gcd
from itertools import zip_longest

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

npcf = False
while True:
    B = []
    for x, y in zip_longest(A[:len(A)//2], A[len(A)//2:], fillvalue=1):
        if gcd(x, y) != 1:
            npcf = True
            break
        B.append(x*y)
    if len(B) == 1:
        break
    A = B

if not npcf:
    print('pairwise coprime')
    exit()

buf = A[0]
for a in A[1:]:
    buf = gcd(buf, a)
if buf == 1:
    print('setwise coprime')
else:
    print('not coprime')

Fixed submission:
from math import gcd

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

prime = list(range(max(A) + 1))

for i in range(2, len(prime)):
    if prime[i] != i:
        continue
    for j in range(i, len(prime), i):
        if prime[j] != j:
            continue
        prime[j] = i

used = set()
pc = True
for a in A:
    used_this = set()
    while a != 1:
        div = prime[a]
        if div in used:
            pc = False
            break
        used_this.add(div)
        a //= div
    used.update(used_this)

if pc:
    print('pairwise coprime')
    exit()

buf = A[0]
for a in A[1:]:
    buf = gcd(buf, a)
if buf == 1:
    print('setwise coprime')
else:
    print('not coprime')

Buggy python submission (verdict: Time Limit Exceeded):
from math import gcd

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

npcf = False
for i in range(N - 1):
    for j in range(i + 1, N):
        if gcd(A[i], A[j]) != 1:
            npcf = True
            break
    if npcf:
        break

if not npcf:
    print('pairwise coprime')
    exit()

buf = A[0]
for a in A[1:]:
    buf = gcd(buf, a)
if buf == 1:
    print('setwise coprime')
else:
    print('not coprime')

Fixed submission:
from math import gcd

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

prime = list(range(max(A) + 1))

for i in range(2, len(prime)):
    if prime[i] != i:
        continue
    for j in range(i, len(prime), i):
        if prime[j] != j:
            continue
        prime[j] = i

used = set()
pc = True
for a in A:
    used_this = set()
    while a != 1:
        div = prime[a]
        if div in used:
            pc = False
            break
        used_this.add(div)
        a //= div
    used.update(used_this)

if pc:
    print('pairwise coprime')
    exit()

buf = A[0]
for a in A[1:]:
    buf = gcd(buf, a)
if buf == 1:
    print('setwise coprime')
else:
    print('not coprime')