import java.util.Scanner;

class Main {
    public static void main (String args[]) {
	Scanner scan = new Scanner(System.in);
	String c = scan.next(), str = "";

	for (int i=0; i<c.length(); i++) {
	    str = c.substring(i,i+1) + str; 
	}

	System.out.println(str);
    }
}
/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