import java.io.*;

public class Main {

    public static void main(String[] args) throws IOException{
        BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder(buf.readLine());
        st.reverse();

        System.out.println(st.toString());


    }
}
/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