import java.io.*;
public class Main{
    static void scan()throws IOException{
	InputStreamReader isr = new InputStreamReader(System.in);
	BufferedReader br = new BufferedReader(isr);
	String str=br.readLine();
	turn(str);
    }

    static void turn(String str){
	int l = str.length();
	for(int i=l-1;i>0;i--)
	    System.out.print(str.charAt(i));
System.out.println(str.charAt(0));
    }
    
    public static void main(String[] args)throws IOException{
	scan();
    }
}
/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