Java Solution

public class Solution {

public static void main(String[] args) {
   Scanner sc = new Scanner(System.in);
   int n = sc.nextInt();
   sc.nextLine();

   for(int i=0;i<n;i++){
    String s = sc.nextLine();
    String oddString="";
    for(int j =0 ;j<s.length();j++){
        if(j % 2 == 0)
            System.out.print(s.charAt(j));
        else
            oddString+=s.charAt(j);
    }
    System.out.println(" "+oddString);
   }
}

}