import java.io.*;

class Main{
	public static void main(String[] args) throws IOException{
		BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
		String s=r.readLine();
		try {
			for(int i=s.length()-1;i>=0;i--){
				System.out.print(s.charAt(i));
			}
			System.out.println("");
		} catch (Exception err) {
			System.exit(0);
		}
	}
}
/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