|Codeforces Round #636 (Div. 3)|
You are given a positive integer $$$n$$$, it is guaranteed that $$$n$$$ is even (i.e. divisible by $$$2$$$).
You want to construct the array $$$a$$$ of length $$$n$$$ such that:
If there are multiple answers, you can print any. It is not guaranteed that the answer exists.
You have to answer $$$t$$$ independent test cases.
The first line of the input contains one integer $$$t$$$ ($$$1 \le t \le 10^4$$$) — the number of test cases. Then $$$t$$$ test cases follow.
The only line of the test case contains one integer $$$n$$$ ($$$2 \le n \le 2 \cdot 10^5$$$) — the length of the array. It is guaranteed that that $$$n$$$ is even (i.e. divisible by $$$2$$$).
It is guaranteed that the sum of $$$n$$$ over all test cases does not exceed $$$2 \cdot 10^5$$$ ($$$\sum n \le 2 \cdot 10^5$$$).
For each test case, print the answer — "NO" (without quotes), if there is no suitable answer for the given test case or "YES" in the first line and any suitable array $$$a_1, a_2, \dots, a_n$$$ ($$$1 \le a_i \le 10^9$$$) satisfying conditions from the problem statement on the second line.
5 2 4 6 8 10
NO YES 2 4 1 5 NO YES 2 4 6 8 1 3 5 11 NO