import java.util.*;

class Main {
    public static void main (String [] args) {

        Scanner sc = new Scanner(System.in);

        char [] str = sc.next().toCharArray();
        for(int x = str.length-1; x >= 0; x--) {
            System.out.print(str[x]);
        }

        System.out.print("\n");
    }
}
/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