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

public class Main {

	public static void main(String[] args) throws IOException{
		try{
			BufferedReader br = new BufferedReader (new InputStreamReader (System.in));
			String chain=br.readLine();
			
			for(int i=chain.length()-1; i>=0;i--){
				System.out.print(chain.charAt(i));
	        }
	        System.out.println("");
		}catch (IOException e) {
                     System.out.println(e);
                }
	}
}
/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