import java.util.Scanner;

public class EX01A_Str {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		System.out.print("enter a message:");
		String msg = in.nextLine();
		int len = msg.length();
		System.out.printf("msg=[%s], len=%d\n", msg, len);
		for (int k = len - 1; k >= 0; k--) {
			System.out.printf("%c", msg.charAt(k));
		}
		System.out.println();
		for (int k = 0; k < len; k++) {
			System.out.printf("%c", msg.charAt(k));
		}
		System.out.println("\n-------");

		String a = "Merry";
		String b = "X'mas";
		String c = a + b;
		String d = a + " " + b;
		System.out.printf("a=[%s]\n", a);
		System.out.printf("b=[%s]\n", b);
		System.out.printf("c=[%s]\n", c);
		System.out.printf("d=[%s]\n", d);
		
	}
}