import java.util.Scanner;

public class Main
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
			String str = sc.next();
			char[] str_array = new char[20];
				for(int i = 0; i < str.length(); i++)
				{
					str_array[i] = str.charAt(i);
				}
				for(int i = 0; i < str.length(); i++)
				{
					System.out.print(str_array[str.length()-i-1]);
				}
					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