import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner in = new Scanner(System.in);
while(in.hasNext()){
String str = in.nextLine();
StringBuffer sb = new StringBuffer(str);
// 以上两行代码可简写为下面这行
// StringBuffer sb = new StringBuffer(in.nextLine());
sb.reverse();
System.out.println(sb);
}
}
}