import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {

	//??????????????????????????°
	public static void main(String[] args) {

		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
		try {
			String s = input.readLine();
			StringBuffer str = new StringBuffer(s);
			s = str.reverse().toString();
			System.out.println(s);
		} catch (IOException e) {
			// TODO ????????????????????? catch ????????????
			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