Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = [0]+[int(x) for x in input().split()]
dp = [0]*(N+1)
res = 0
resstr = ''
for i in range(N):
    # 今見てるところ
    k = N-i
    if k < N//2:
        dp[k] = A[k]-sum([x for i,x in enumerate(dp[k+1:]) if i%k==0])%2
    else:
        dp[k] = A[k]
    if dp[k]==1:
        resstr = str(k)+' '+resstr
    res += dp[k]

print(res)
print(' '.join(resstr))

Fixed submission:
N = int(input())
A = [0]+[int(x) for x in input().split()]
res = [0]*(N+1)
sum_res = 0
for i in range(N):
    # 今見てるところ
    k = N-i
    tmp = 0
    for j in range(k,N+1,k):
       	tmp += res[j]
    res[k] = A[k] ^ tmp%2
    sum_res += res[k]
 
print(sum_res)
print(' '.join([str(i) for i,x in enumerate(res) if x==1]))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = [0]+[int(x) for x in input().split()]
dp = [0]*(N+1)
res = 0
for i in range(N):
    # 今見てるところ
    k = N-i
    if k < N//2:
        dp[k] = A[k]-sum([x for i,x in enumerate(dp[k+1:]) if i%k==0])%2
    else:
        dp[k] = A[k]
    res += dp[k]

print(res)
print(' '.join([str(i) for i,x in enumerate(dp) if x==1]))

Fixed submission:
N = int(input())
A = [0]+[int(x) for x in input().split()]
res = [0]*(N+1)
sum_res = 0
for i in range(N):
    # 今見てるところ
    k = N-i
    tmp = 0
    for j in range(k,N+1,k):
       	tmp += res[j]
    res[k] = A[k] ^ tmp%2
    sum_res += res[k]
 
print(sum_res)
print(' '.join([str(i) for i,x in enumerate(res) if x==1]))

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = [0]+[int(x) for x in input().split()]
dp = [0]*(N+1)
res = 0
for i in range(N):
    k = N-i
    if k < N//2:
        l = N//k
        dp[k] = A[k]-sum([dp[k*j] for j in range(2,l+1)])%2
    else:
        dp[k] = A[k]
    res += dp[k]
     
print(res)
print(' '.join([i for i,x in enumerate(dp) if x==1]))

Fixed submission:
N = int(input())
A = [0]+[int(x) for x in input().split()]
res = [0]*(N+1)
sum_res = 0
for i in range(N):
    # 今見てるところ
    k = N-i
    tmp = 0
    for j in range(k,N+1,k):
       	tmp += res[j]
    res[k] = A[k] ^ tmp%2
    sum_res += res[k]
 
print(sum_res)
print(' '.join([str(i) for i,x in enumerate(res) if x==1]))

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = [0]+[int(x) for x in input().split()]
dp = [0]*(N+1)
res = 0
for i in range(N):
    # 今見てるところ
    k = N-i
    if k < N//2:
        dp[k] = A[k]-sum([x for i,x in enumerate(dp[k+1:]) if i%k==0])%2
    else:
        dp[k] = A[k]
    res += dp[k]

print(res)
print(' '.join([i for i,x in enumerate(dp) if x==1]))

Fixed submission:
N = int(input())
A = [0]+[int(x) for x in input().split()]
res = [0]*(N+1)
sum_res = 0
for i in range(N):
    # 今見てるところ
    k = N-i
    tmp = 0
    for j in range(k,N+1,k):
       	tmp += res[j]
    res[k] = A[k] ^ tmp%2
    sum_res += res[k]
 
print(sum_res)
print(' '.join([str(i) for i,x in enumerate(res) if x==1]))

Buggy python submission (verdict: Runtime Error):
# 明らかにTLEする
N = int(input())
A = [0]+[int(x) for x in input().split()]
dp = [0]*(N+1)
res = 0
for i in range(N):
    k = N-i
    if k < N//2:
        dp[k] = A[k]-sum([x for i,x in enumerate(dp[k+1:]) if i%k==0])%2
    else:
        dp[k] = A[k]
    res += dp[k]

print(res)
print('0'.join([i for i,x in enumerate(dp) if x==1]))

Fixed submission:
N = int(input())
A = [0]+[int(x) for x in input().split()]
res = [0]*(N+1)
sum_res = 0
for i in range(N):
    # 今見てるところ
    k = N-i
    tmp = 0
    for j in range(k,N+1,k):
       	tmp += res[j]
    res[k] = A[k] ^ tmp%2
    sum_res += res[k]
 
print(sum_res)
print(' '.join([str(i) for i,x in enumerate(res) if x==1]))