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

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

n = int(input())
a = list(map(int, input().split()))
ans = [0 for i in range(n)]
ball = []

for ii in range(n):
    #print(ans)
    i = n-ii
    if(a[i-1]!=ans[i-1]):
        d = make_divisors(i)
        ball.append(i)
        for k in d:
            ans[k-1] = 1-ans[k-1]
print(len(ball))
print(' '.join(map(str,ball)))

Fixed submission:
import math

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

n = int(input())
a = list(map(int, input().split()))
ans = [0 for i in range(n)]
ball = []

for ii in range(n):
    #print(ans)
    i = n-ii
    if(a[i-1]!=ans[i-1]):
        d = make_divisors(i)
        ball.append(i)
        for k in d:
            ans[k-1] = 1-ans[k-1]
print(len(ball))
print(' '.join(map(str,ball)))

Buggy python submission (verdict: Time Limit Exceeded):
import math
m = list(map(int, input().split()))[0]
a = list(map(int, input().split()))


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
  
b = [False for i in range(m)]
c = [False for i in range(m)]

for i in range(m):
    ii = m - i
    if(a[ii-1] != b[ii-1]):
        k = make_divisors(ii)
        for j in k:
            b[j-1] = not b[j-1]
        c[ii-1] = True
    #print("b",b)
    #print("c",c)
    #print()

ans = ""
count = 0
for i in range(m):
    if(c[i] == True):
        ans+= str(i+1) + " "
        count +=1
        
print(count)
print(ans)

Fixed submission:
import math

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

n = int(input())
a = list(map(int, input().split()))
ans = [0 for i in range(n)]
ball = []

for ii in range(n):
    #print(ans)
    i = n-ii
    if(a[i-1]!=ans[i-1]):
        d = make_divisors(i)
        ball.append(i)
        for k in d:
            ans[k-1] = 1-ans[k-1]
print(len(ball))
print(' '.join(map(str,ball)))

Buggy python submission (verdict: Runtime Error):
import math
m = list(map(int, input().split()))[0]
a = list(map(int, input().split()))


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
  
b = [False for i in range(m)]
c = [False for i in range(m)]

for i in range(m):
    ii = m - i
    if(a[ii-1] != b[ii-1]):
        k = make_divisors(ii)
        for j in k:
            b[j-1] = not b[j-1]
        c[ii-1] = True
    print("b",b)
    print("c",c)
    print()

ans = ""
count = 0
for i in range(m):
    if(c[i] == True):
        ans+= str(i+1) + " "
        count +=1
        
print(count)
print(ans)

Fixed submission:
import math

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

n = int(input())
a = list(map(int, input().split()))
ans = [0 for i in range(n)]
ball = []

for ii in range(n):
    #print(ans)
    i = n-ii
    if(a[i-1]!=ans[i-1]):
        d = make_divisors(i)
        ball.append(i)
        for k in d:
            ans[k-1] = 1-ans[k-1]
print(len(ball))
print(' '.join(map(str,ball)))