import java.util.Scanner;

/**
 * HJ12 字符串反转
 */
public class HJ012 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            String str1 = sc.nextLine();
            StringBuffer sb = new StringBuffer(str1);
            System.out.println(sb.reverse().toString());
        }
        sc.close();
    }

}