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();
}
}