import java.util.Scanner;

public class RevertString {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in); 

String str; 

System.out.print("Input : ");

str = scan.next();

System.out.print("Output : ");

for ( int i = str.length() -1; i >=0; i--) {......} {

System.out.print(str.charAt(i));
}

System.out.println(result);

}

}