import java.util.*;
public class Main{
public static void main(String[] args){
Scanner in=new Scanner(System.in);
String str=in.nextLine();
StringBuilder sbd=new StringBuilder(str);
System.out.println(sbd.reverse());
}
}
public class Main{
public static void main(String[] args){
Scanner in=new Scanner(System.in);
String str=in.nextLine();
StringBuilder sbd=new StringBuilder(str);
System.out.println(sbd.reverse());
}
}