import java.io.PrintStream;
import java.util.*;
import java.util.Scanner ; 
import java.math.BigInteger;
import java.util.Arrays;
import java.text.DecimalFormat;


public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);    
        String s;
        s = sc.nextLine();
        StringBuffer sb;
        sb = new StringBuffer(s);
        s = sb.reverse().toString();
        System.out.println(s);

    }
}
/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