题目描述
Read problems statements in [Russian] and [Bengali].
You are given an integer N. Output a permutation of values from 1 to N that satisfies the following condition:
$\gcd([1+A_{1},2+A_{2},3+A_{3},\ldots,N+A_{N}]) > 1$
It can be proven that a solution always exists. If there are multiple permutations that can satisfy the condition, then output any one of them.
As a reminder,
A permutation of values from 1 to N is an array containing integers from 1 to N in any order but each of them appearing exactly once.
GCD stands for Greatest Common Divisor. The greatest common divisor of a sequence is the largest integer d such that all the numbers in sequence are divisible by d. For more information, refer to [here].
------ Input Format ------
- The first line contains an integer T denoting the number of test cases. The T test cases then follow.
- The first line of each test case contains an integer N.
------ Output Format ------
For each test case, output on one line a permutation of values from 1 to N which satisfies the above condition.
------ Constraints ------
$1 ≤ T ≤ 500$
$2 ≤ N ≤ 500$
----- Sample Input 1 ------
1
4
----- Sample Output 1 ------
3 4 1 2
----- explanation 1 ------
- For the first test case, $\gcd([1+3,2+4,3+1,4+2])= \gcd([4,6,4,6])=2$ which is greater than $1$, so the given permutation satisfies the condition.
输入格式
见题面
输出格式
见题面