import java.util.Scanner;

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

		char ch[] = str.toCharArray();
		for(int i=ch.length-1; i>=0; i--)
			System.out.print(ch[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