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

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

		char[] s = br.readLine().toCharArray();
		
		int N = s.length;
		for(int i=0; i<N/2; i++){
			char temp = s[i];
			s[i] = s[N-i-1];
			s[N-i-1] = temp;
		}

		System.out.println(s);
	}
}
/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