import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        try{
            StringBuilder sb = new StringBuilder();
            String str = br.readLine();
            String[] s= str.split("",0);
            for(int i=0;i<s.length;i++){
                sb.append(s[s.length-1-i]);
            }
            System.out.println(sb);
        }catch(Exception ex){
            System.exit(0);
        }
    }
}
/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