Ehab Fails to Be Thanos

Description:

Input:

The first line contains an integer $$$n$$$ ($$$1 \le n \le 1000$$$), where $$$2n$$$ is the number of elements in the array $$$a$$$.

The second line contains $$$2n$$$ space-separated integers $$$a_1$$$, $$$a_2$$$, $$$\ldots$$$, $$$a_{2n}$$$ ($$$1 \le a_i \le 10^6$$$) — the elements of the array $$$a$$$.

Output:

If there's no solution, print "-1" (without quotes). Otherwise, print a single line containing $$$2n$$$ space-separated integers. They must form a reordering of $$$a$$$. You are allowed to not change the order.

Sample Input:

3
1 2 2 1 3 1

Sample Output:

2 1 3 1 1 2

Sample Input:

1
1 1

Sample Output:

-1

Note:

In the first example, the first $$$n$$$ elements have sum $$$2+1+3=6$$$ while the last $$$n$$$ elements have sum $$$1+1+2=4$$$. The sums aren't equal.

In the second example, there's no solution.