import java.util.*;

public class Main {
public static void main(String[]args){
	Scanner sc = new Scanner(System.in);
	String s=sc.next(); 
	char[] a=s.toCharArray();
	for(int i=a.length-1; i>=0; i-- )
	System.out.print(a[i]);
	System.out.println();
}
}
/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