import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        try (Scanner scan = new Scanner(System.in)) {
            StringBuffer str = new StringBuffer(scan.nextLine());
            System.out.println(str.reverse());
        } catch (Exception e) {
            System.exit(0);
        }
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz