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.Collections;
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		ArrayList<String> list = new ArrayList<String>();
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		sc.close();
		
		String[] str = s.split("");
		for(String a : str){
			list.add(a);
		}
		Collections.reverse(list);
		
		for(String a : list){
			System.out.print(a);
		}
	}

}