Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict, deque
import sys

sys.setrecursionlimit(100000)

MIN = -10 ** 9
MAX = 10 ** 9 + 7


def d(n):
    divisors = []
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            if i * i != n:
                divisors.append(n // i)

    return divisors


def main():
    N = int(input())
    # A = [
    #     int(input())
    #     for _ in range(N)
    # ]
    A = [int(a) for a in input().split()]

    res_c = 0
    res1 = []
    bucket = [0] * (N + 1)

    i = N
    for Ai in reversed(A):
        i -= 1
        k = i + 1
        if k * 2 > N:
            if Ai == 1:
                res_c += 1
                res1.append(k)
                for j in range(2, int(k ** 0.5) + 1):
                    if k % j == 0:
                        bucket[j] += 1
                        if j * j != k:
                            bucket[k // j] += 1
            continue
        if k == 1:
            if res_c % 2 != Ai:
                res_c += 1
                res1.append(k)
            break

        if bucket[k] % 2 != Ai:
            res_c += 1
            res1.append(k)
            for j in range(2, int(k ** 0.5) + 1):
                if k % j == 0:
                    bucket[j] += 1
                    if j * j != k:
                        bucket[k // j] += 1
    print(res_c)
    print(*res1)


if __name__ == '__main__':
    main()


Fixed submission:
from collections import defaultdict, deque
import sys

sys.setrecursionlimit(100000)

MIN = -10 ** 9
MAX = 10 ** 9 + 7


def d(n):
    divisors = []
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            if i * i != n:
                divisors.append(n // i)

    return divisors


def main():
    N = int(input())
    # A = [
    #     int(input())
    #     for _ in range(N)
    # ]
    A = [int(a) for a in input().split()]

    res1 = []
    bucket = [0] * (N + 1)

    i = N
    for Ai in reversed(A):
        i -= 1
        k = i + 1
        if k * 2 > N:
            if Ai == 1:
                res1.append(k)
                bucket[k] = 1

            continue
        if k == 1:
            if len(res1) % 2 != Ai:
                res1.append(k)
            break

        s = 0
        j = 0
        while True:
            j+=1
            if j * k > N:
                break
            s += bucket[j * k]

        if s % 2 != Ai:
            res1.append(k)
            bucket[k] = 1
    print(len(res1))
    print(*res1)


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict, deque
import sys

sys.setrecursionlimit(100000)

MIN = -10 ** 9
MAX = 10 ** 9 + 7


def d(n):
    divisors = []
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            if i * i != n:
                divisors.append(n // i)

    return divisors


def main():
    N = int(input())
    # A = [
    #     int(input())
    #     for _ in range(N)
    # ]
    A = [int(a) for a in input().split()]

    res_c = 0
    res1 = []
    bucket = [0] * (N + 1)

    i = N
    for Ai in reversed(A):
        i -= 1
        k = i + 1
        if k * 2 > N:
            if Ai == 1:
                res_c += 1
                res1.append(k)
                for di in d(k):
                    bucket[di] += 1
                # sq = int(k ** 0.5)
                # if sq * sq == k:
                #     bucket[sq] += 1
                # for j in range(2, sq):
                #     if k % j == 0:
                #         bucket[j] += 1
            continue
        if k == 1:
            if res_c % 2 != Ai:
                res_c += 1
                res1.append(k)
            break

        if bucket[k] % 2 != Ai:
            res_c += 1
            res1.append(k)
            for di in d(k):
                bucket[di] += 1
    print(res_c)
    print(*res1)


if __name__ == '__main__':
    main()


Fixed submission:
from collections import defaultdict, deque
import sys

sys.setrecursionlimit(100000)

MIN = -10 ** 9
MAX = 10 ** 9 + 7


def d(n):
    divisors = []
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            if i * i != n:
                divisors.append(n // i)

    return divisors


def main():
    N = int(input())
    # A = [
    #     int(input())
    #     for _ in range(N)
    # ]
    A = [int(a) for a in input().split()]

    res1 = []
    bucket = [0] * (N + 1)

    i = N
    for Ai in reversed(A):
        i -= 1
        k = i + 1
        if k * 2 > N:
            if Ai == 1:
                res1.append(k)
                bucket[k] = 1

            continue
        if k == 1:
            if len(res1) % 2 != Ai:
                res1.append(k)
            break

        s = 0
        j = 0
        while True:
            j+=1
            if j * k > N:
                break
            s += bucket[j * k]

        if s % 2 != Ai:
            res1.append(k)
            bucket[k] = 1
    print(len(res1))
    print(*res1)


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict, deque
import sys

sys.setrecursionlimit(100000)

MIN = -10 ** 9
MAX = 10 ** 9 + 7


def d(n):
    divisors = []
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            if i != n // i:
                divisors.append(n // i)

    return divisors


def main():
    N = int(input())
    # A = [
    #     int(input())
    #     for _ in range(N)
    # ]
    A = [int(a) for a in input().split()]

    res_c = 0
    res1 = []
    bucket = [0] * (N + 1)

    for i in reversed(range(N)):
        k = i + 1
        if i * 2 + 2 > N:
            if A[i] == 1:
                res_c += 1
                res1.append(k)
                for di in d(k):
                    bucket[di] += 1
            continue
        if k == 1:
            if res_c % 2 != A[i]:
                res_c += 1
                res1.append(k)
            break

        if bucket[k] % 2 != A[i]:
            res_c += 1
            res1.append(k)
            for di in d(k):
                bucket[di] += 1
    print(res_c)
    print(*res1)


if __name__ == '__main__':
    main()


Fixed submission:
from collections import defaultdict, deque
import sys

sys.setrecursionlimit(100000)

MIN = -10 ** 9
MAX = 10 ** 9 + 7


def d(n):
    divisors = []
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            if i * i != n:
                divisors.append(n // i)

    return divisors


def main():
    N = int(input())
    # A = [
    #     int(input())
    #     for _ in range(N)
    # ]
    A = [int(a) for a in input().split()]

    res1 = []
    bucket = [0] * (N + 1)

    i = N
    for Ai in reversed(A):
        i -= 1
        k = i + 1
        if k * 2 > N:
            if Ai == 1:
                res1.append(k)
                bucket[k] = 1

            continue
        if k == 1:
            if len(res1) % 2 != Ai:
                res1.append(k)
            break

        s = 0
        j = 0
        while True:
            j+=1
            if j * k > N:
                break
            s += bucket[j * k]

        if s % 2 != Ai:
            res1.append(k)
            bucket[k] = 1
    print(len(res1))
    print(*res1)


if __name__ == '__main__':
    main()