Buggy python submission (verdict: Time Limit Exceeded):
#!/usr/bin/env python3
#ABC134 D

import sys
import math
import bisect
from heapq import heappush, heappop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
mod = 10**9 + 7

n = int(input())
a = list(map(int,input().split()))

b = []

for i in range(n//2,n):
    if a[i] == 1:
        b.append(i+1)

for i in range(1,n//2+1)[::-1]:
    s = 0
    if i == 1:
        if len(b) == 0 and a[0]:
            b.append(1)
        elif len(b) % 2 != a[0]:
            b.append(1)
        break
    for j in b:
        if j % i == 0:
            s += 1
    if s % 2:
        if a[i-1] == 1:
            continue
        b.append(i)
    elif s % 2 == 0 and a[i-1] == 1:
        b.append(i)

m = len(b)
if m == 0:
    print(0)
    quit()
else:
    b.sort()
    print(m)
    for i in range(m-1):
        print(b[i],end=' ')
    print(b[-1])


Fixed submission:
#!/usr/bin/env python3
#ABC134 D

import sys
import math
import bisect
from heapq import heappush, heappop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
mod = 10**9 + 7

n = int(input())
a = list(map(int,input().split()))

b = [0]*(n+1)

for i in range(n//2,n):
    if a[i] == 1:
        b[i+1] = 1

for i in range(1,n//2+1)[::-1]:
    s = 0
    if i == 1:
        if sum(b) == 0 and a[0]:
            b[1] = 1
        elif sum(b) % 2 != a[0]:
            b[1] = 1
        break
    for j in range(2,n):
        if i*j > n:
            break
        if b[i*j] == 1:
            s += 1
    if s % 2:
        if a[i-1] == 1:
            continue
        b[i] = 1
    elif s % 2 == 0 and a[i-1] == 1:
        b[i] = 1

m = sum(b)
if m == 0:
    print(0)
    quit()
else:
    print(m)
    ans = [i for i,v in enumerate(b) if v]
    print(*ans)

Buggy python submission (verdict: Time Limit Exceeded):
#!/usr/bin/env python3
#ABC134 D

import sys
import math
import bisect
from heapq import heappush, heappop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
mod = 10**9 + 7

n = int(input())
a = list(map(int,input().split()))

b = []

for i in range(n//2,n):
    if a[i] == 1:
        b.append(i+1)

for i in range(1,n//2+1)[::-1]:
    s = 0
    if i == 1:
        if len(b) == 0 and a[0]:
            b.append(1)
        elif len(b) % 2 != a[0]:
            b.append(1)
        break
    for j in b:
        if j % i == 0:
            s += 1
    if s % 2:
        if a[i-1] == 1:
            continue
        b.append(i)
    elif s % 2 == 0 and a[i-1] == 1:
        b.append(i)

m = len(b)
if m == 0:
    print(0)
    quit()
else:
    b.sort()
    print(m)
    for i in range(m-1):
        print(b[i],end=' ')
    print(b[-1])


Fixed submission:
#!/usr/bin/env python3
#ABC134 D

import sys
import math
import bisect
from heapq import heappush, heappop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
mod = 10**9 + 7

n = int(input())
a = list(map(int,input().split()))

b = [0]*(n+1)

for i in range(n//2,n):
    if a[i] == 1:
        b[i+1] = 1

for i in range(1,n//2+1)[::-1]:
    s = 0
    if i == 1:
        if sum(b) == 0 and a[0]:
            b[1] = 1
        elif sum(b) % 2 != a[0]:
            b[1] = 1
        break
    for j in range(2,n):
        if i*j > n:
            break
        if b[i*j] == 1:
            s += 1
    if s % 2:
        if a[i-1] == 1:
            continue
        b[i] = 1
    elif s % 2 == 0 and a[i-1] == 1:
        b[i] = 1

m = sum(b)
if m == 0:
    print(0)
    quit()
else:
    print(m)
    ans = [i for i,v in enumerate(b) if v]
    print(*ans)