#P1283C. Friends and Gifts

    ID: 3752 Type: RemoteJudge 2000ms 256MiB Tried: 0 Accepted: 0 Difficulty: 5 Uploaded By: Tags>constructive algorithmsdata structuresmath*1500

Friends and Gifts

Description

There are nn friends who want to give gifts for the New Year to each other. Each friend should give exactly one gift and receive exactly one gift. The friend cannot give the gift to himself.

For each friend the value fif_i is known: it is either fi=0f_i = 0 if the ii-th friend doesn't know whom he wants to give the gift to or 1fin1 \le f_i \le n if the ii-th friend wants to give the gift to the friend fif_i.

You want to fill in the unknown values (fi=0f_i = 0) in such a way that each friend gives exactly one gift and receives exactly one gift and there is no friend who gives the gift to himself. It is guaranteed that the initial information isn't contradictory.

If there are several answers, you can print any.

The first line of the input contains one integer nn (2n21052 \le n \le 2 \cdot 10^5) — the number of friends.

The second line of the input contains nn integers f1,f2,,fnf_1, f_2, \dots, f_n (0fin0 \le f_i \le n, fiif_i \ne i, all fi0f_i \ne 0 are distinct), where fif_i is the either fi=0f_i = 0 if the ii-th friend doesn't know whom he wants to give the gift to or 1fin1 \le f_i \le n if the ii-th friend wants to give the gift to the friend fif_i. It is also guaranteed that there is at least two values fi=0f_i = 0.

Print nn integers nf1,nf2,,nfnnf_1, nf_2, \dots, nf_n, where nfinf_i should be equal to fif_i if fi0f_i \ne 0 or the number of friend whom the ii-th friend wants to give the gift to. All values nfinf_i should be distinct, nfinf_i cannot be equal to ii. Each friend gives exactly one gift and receives exactly one gift and there is no friend who gives the gift to himself.

If there are several answers, you can print any.

Input

The first line of the input contains one integer nn (2n21052 \le n \le 2 \cdot 10^5) — the number of friends.

The second line of the input contains nn integers f1,f2,,fnf_1, f_2, \dots, f_n (0fin0 \le f_i \le n, fiif_i \ne i, all fi0f_i \ne 0 are distinct), where fif_i is the either fi=0f_i = 0 if the ii-th friend doesn't know whom he wants to give the gift to or 1fin1 \le f_i \le n if the ii-th friend wants to give the gift to the friend fif_i. It is also guaranteed that there is at least two values fi=0f_i = 0.

Output

Print nn integers nf1,nf2,,nfnnf_1, nf_2, \dots, nf_n, where nfinf_i should be equal to fif_i if fi0f_i \ne 0 or the number of friend whom the ii-th friend wants to give the gift to. All values nfinf_i should be distinct, nfinf_i cannot be equal to ii. Each friend gives exactly one gift and receives exactly one gift and there is no friend who gives the gift to himself.

If there are several answers, you can print any.

Sample Input 1

5
5 0 0 2 4

Sample Output 1

5 3 1 2 4

Sample Input 2

7
7 0 0 1 4 0 6

Sample Output 2

7 3 2 1 4 5 6

Sample Input 3

7
7 4 0 3 0 5 1

Sample Output 3

7 4 2 3 6 5 1

Sample Input 4

5
2 1 0 0 0

Sample Output 4

2 1 4 5 3