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

class Main{


	public static void main(String[] a){

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader br = new BufferedReader(is);


        String str = "";
        char[] chr;

		try {
			str = br.readLine();
			chr = new char[str.length()];

			for(int i = 0; i < str.length(); i++) {
				 chr[i] = str.charAt(i);
			}

			String ans = "";

			for(int i = (chr.length - 1); i >= 0; i--) {
				ans += chr[i];
			}
			System.out.println(ans);

		} catch (IOException e) {
			e.printStackTrace();
		}

	}


}
/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