import java.util.Scanner;

public class Zadacha02 {
			// ne e gotova
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		System.out.println("Vyvedi dyljina na masiva ");
		int size = scan.nextInt();

		int arrNum[] = new int [size];

		for (int index=0; index<arrNum.length; index++ ){
			System.out.println("Vyvedi chislo na poziciq : "+ (index+1));
			arrNum[index]=scan.nextInt();
		}

		int arrRev[] = new int [(size*2)];


		for (int index=0; index<arrNum.length; index++ ){
			arrRev[index]=arrNum[index];
		}

		for (int index=0, indexDve=arrRev.length; index<arrNum.length; index++,indexDve-- ){
			arrRev[indexDve]=arrNum[index];
		}

		System.out.println();
		for (int index=0; index<arrRev.length; index++){
			System.out.print( " " + arrRev[index] );
		}

	}

}