import java.util.Scanner;
/**
* HJ106 字符逆序 - 简单
*/
public class HJ106 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while (sc.hasNextLine()) {
String str = sc.nextLine();
StringBuilder sb = new StringBuilder(str);
sb.reverse();
System.out.println(sb);
}
sc.close();
}
}