import java.io.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;
class Main{
    public static void main(String[] a) throws Exception{
    	ArrayList<String> lst = new ArrayList<String>();
    	
    	Scanner scan = new Scanner(System.in);
    	
    	StringBuffer a1 = new StringBuffer(scan.next());
        System.out.println(a1.reverse());
    }
}
/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