import java.util.*;
public class Main{
  private static String strs;
  static char []a;
public static void main(String [] args){
    Scanner sc = new Scanner(System.in);
    strs=sc.next();
    char[]a = strs.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