import java.util.Scanner;

public class Main
{
	public static void main(String arg[])
	{
		Scanner scan = new Scanner(System.in);
		String str = scan.next();

		String box[] = new String[str.length()];

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

		String rebox[] = new String[str.length()];

		for(int i=0; i<str.length(); i++)
			rebox[i] =box[str.length()-1-i];

		for(int i=0; i<str.length(); i++)
			System.out.print(rebox[i]);

		System.out.println();
	}
}
/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