We need to construct an array of $$$N$$$ elements.

All elements of array need to be **pairwise distinct**.

Also for each index $$$i$$$ we have two choice of integers $$$a_i$$$, $$$b_i$$$.

**Example**:

let $$$N = 5$$$

$$$a = {[1, 1, 1, 3, 5]}$$$

$$$b = {[2, 3, 4, 5, 4]}$$$

then our constructed array would be $$$[2, 3, 1, 5, 4]$$$.

There can be multiple solution possible also sometimes it is impossible to find a solution.

We can assume $$$N < 10^{5} $$$ and $$$a_i ,b_i < 10^9$$$.