Problem:
Reverse Sequence

Write a program which reverses a given string str.

Input

str (the size of str ≤ 20) is given in a line.

Output

Print the reversed str in a line.

Sample Input

w32nimda

Output for the Sample Input

admin23w

Solution in JAVA (judge verdict: WA: Presentation Error)

import java.util.ArrayList;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		// ??????????????°
		ArrayList<String> str = new ArrayList <String>();		//????????????
		String[] strArray;
		//ArrayList<String> kari = new ArrayList <String>(str);
		String a;

		Scanner sc = new Scanner(System.in);		//?????????????????§??\???


		while(sc.hasNext()){
			a = sc.next();		//??\?????????????????????a?????\??????
			//str.add(a);
			strArray = a.split("");		//a?????\??£?????????????????????strArray?????\??????

			for(int b = strArray.length-1; 0 <= b ; b--){
				System.out.print(strArray[b]);
			}
		break;
		}
	}
}