import java.util.Scanner;

public class Main {
    static char[][] arr = new char[10][100];
    static char[][] encryptArr = new char[10][100];
    static int[] arrNum = new int[10]; 

    static int repeatNum = 0;

    public static void main(String[] args) {
        repeatNum = scan().nextInt();

        for(int i=0; i<repeatNum; i++)
            inputData(i);

        for(int i = 0; i<repeatNum; i++)
            encrypt(i);

        for(int i = 0; i<repeatNum; i++)
            print(i);       
    }

    public static Scanner scan(){
        Scanner scan = null;
        if(scan==null){
            scan = new Scanner(System.in);
            return scan;
        }
        else 
            return scan;
    }


    public static void inputData(int i){
            String text = scan().nextLine();
            arrNum[i] = text.length();
            for(int j=0; j<text.length(); j++){
                arr[i][j] = text.charAt(j); 
            }

    }

    public static void encrypt(int i){
        int evenNum=0;
        for(int j=0; j<arrNum[i]; j++){
            if(j%2==0){
                encryptArr[i][j/2]= arr[i][j];
                evenNum++;
            }
        }

        for(int j=1; j<arrNum[i]; j++){
            if(j%2!=0){
                encryptArr[i][evenNum++]= arr[i][j];
            }
        }

    }

    public static void print(int i){    
        for(int j=0; j<arrNum[i]; j++)
                System.out.print(encryptArr[i][j]);
                System.out.println();

    }
}

혹시 다른 방식으로 입력하면 안되나 해서 다른 예제들도 입력해봤는데 잘나오더라고요 고수님들 문제점 좀 알려주세요 ㅜㅜ