
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException
    {
        StringBuffer sBuffer = new StringBuffer();
        BufferedReader bReader = 
                new BufferedReader(new InputStreamReader(System.in));
        
        String str = bReader.readLine();
        sBuffer.append(str);
        System.out.println(sBuffer.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