import java.util.*;

public class Main 
{
	public static void main(String[] args) 
	{
		Scanner stdIn = new Scanner(System.in);
		String str = stdIn.next();
		int size = str.length();
		for(int i = size - 1; i >= 0; --i)
		{
			System.out.print(str.charAt(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