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


def input():
    return sys.stdin.readline().strip()


sys.setrecursionlimit(10 ** 9)


MOD = 10 ** 9 + 7


def main():
    N = int(input())
    A = list(map(int, input().split()))
    B = []
    C = [0] * N

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

        # divisors.sort()
        return divisors

    for i in range(N):
        if A[N - i - 1] == 1:
            if C[N - i - 1] == 0:
                B.append(N - i)
                D = make_divisors(N - i)
                for d in D:
                    C[d - 1] += 1
                    C[d - 1] %= 2
        else:
            if C[N - i - 1] == 1:
                B.append(N - i)
                D = make_divisors(N - i)
                for d in D:
                    C[d - 1] += 1
                    C[d - 1] %= 2
    print(len(B))
    print(*B, sep=" ")


if __name__ == "__main__":
    main()


Fixed submission:
import sys


def input():
    return sys.stdin.readline().strip()


sys.setrecursionlimit(10 ** 9)


MOD = 10 ** 9 + 7


def main():
    N = int(input())
    A = list(map(int, input().split()))
    B = []
    C = [0] * N

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

        # divisors.sort()
        return divisors

    for i in range(N):
        if A[N - i - 1] == 1:
            if C[N - i - 1] == 0:
                B.append(N - i)
                D = make_divisors(N - i)
                for d in D:
                    C[d - 1] += 1
                    C[d - 1] %= 2
        else:
            if C[N - i - 1] == 1:
                B.append(N - i)
                D = make_divisors(N - i)
                for d in D:
                    C[d - 1] += 1
                    C[d - 1] %= 2
    print(len(B))
    print(*B, sep=" ")


if __name__ == "__main__":
    main()

Buggy python submission (verdict: Runtime Error):
a=list(map(int,input().split()))
B=[]
for i in range(n,0,-1):
    if n//i>1:
        l=n//i
        cnt=0
        for k in range(2,l+1):
            cnt+=a[i*k-1]
        if cnt%2!=a[i-1]:
            B.append(str(i))
    else:
        if a[i-1]==1:
            B.append(str(i))

print(len(B))
if len(B)>0:
    for i in range(len(B)):
        B[i]=str(B[i])
    print(' '.join(B))

Fixed submission:
import sys


def input():
    return sys.stdin.readline().strip()


sys.setrecursionlimit(10 ** 9)


MOD = 10 ** 9 + 7


def main():
    N = int(input())
    A = list(map(int, input().split()))
    B = []
    C = [0] * N

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

        # divisors.sort()
        return divisors

    for i in range(N):
        if A[N - i - 1] == 1:
            if C[N - i - 1] == 0:
                B.append(N - i)
                D = make_divisors(N - i)
                for d in D:
                    C[d - 1] += 1
                    C[d - 1] %= 2
        else:
            if C[N - i - 1] == 1:
                B.append(N - i)
                D = make_divisors(N - i)
                for d in D:
                    C[d - 1] += 1
                    C[d - 1] %= 2
    print(len(B))
    print(*B, sep=" ")


if __name__ == "__main__":
    main()