import java.io.*;
import java.util.*;
public class Main{
	public static void main(String[] args)throws IOException{
		BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
		String s=reader.readLine();
		char[] in=s.toCharArray();
		for(int i=in.length-1;i>=0;i--)System.out.print(in[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