import java.io.*;

class Main {
	public static void main(String args[]) {
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);

		try {
			String buf = br.readLine();
			StringBuffer sb = new StringBuffer(buf);
			System.out.println(sb.reverse());
		} catch (Exception e) {
			System.out.println("Exception!");
		}
	}
}
/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