A13706 · Big Vova · GESP考级

题目描述

Alexander is a well-known programmer. Today he decided to finally go out and play football, but with the first hit he left a dent on the new Rolls-Royce of the wealthy businessman Big Vova. Vladimir has recently opened a store on the popular online marketplace "Zmey-Gorynych", and offers Alex a job: if he shows his programming skills by solving a task, he'll work as a cybersecurity specialist. Otherwise, he'll be delivering some doubtful products for the next two years. You're given $n$ positive integers $a_1, a_2, \dots, a_n$ . Using each of them exactly at once, you're to make such sequence $b_1, b_2, \dots, b_n$ that sequence $c_1, c_2, \dots, c_n$ is lexicographically maximal, where $c_i=GCD(b_1,\dots,b_i)$ - the greatest common divisor of the first $i$ elements of $b$ . Alexander is really afraid of the conditions of this simple task, so he asks you to solve it. A sequence $a$ is lexicographically smaller than a sequence $b$ if and only if one of the following holds: - $a$ is a prefix of $b$ , but $a \ne b$ ; - in the first position where $a$ and $b$ differ, the sequence $a$ has a smaller element than the corresponding element in $b$ .

Each test contains multiple test cases. The first line contains the number of test cases $t$ ( $1 \le t \le 10^3$ ). Description of the test cases follows. The first line of each test case contains a single integer $n$ ( $1 \le n \le 10^3$ ) — the length of the sequence $a$ . The second line of each test case contains $n$ integers $a_1,\dots,a_n$ ( $1 \le a_i \le 10^3$ ) — the sequence $a$ . It is guaranteed that the sum of $n$ over all test cases does not exceed $10^3$ .

For each test case output the answer in a single line — the desired sequence $b$ . If there are multiple answers, print any.

输入 #1

7
2
2 5
4
1 8 2 3
3
3 8 9
5
64 25 75 100 50
1
42
6
96 128 88 80 52 7
5
2 4 8 16 17

输出 #1

5 2 
8 2 1 3 
9 3 8 
100 50 25 75 64 
42 
128 96 80 88 52 7 
17 2 4 8 16