import java.util.Scanner;

public class Main {
	public static void main(String[]args){
			Scanner scan = new Scanner(System.in);
			//System.out.println("??\???");
			String str=scan.next();
			StringBuffer sb = new StringBuffer(str);
			String hantai = sb.reverse().toString();
			System.out.println(hantai);
			
		
		}
}
/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