import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution { public static void main(String[] args) { Scanner in = new Scanner(System.in); int t=in.nextInt(); int n; for (int i = 0; i < t; i++) { n=in.nextInt(); int a[]=new int[n]; for (int j = 0; j