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


class Main{	
	
	public static void main (String[] args)throws IOException{
		InputStreamReader in = new InputStreamReader(System.in);
		BufferedReader reader = new BufferedReader(in);
		
		String name = reader.readLine();
		char[] data = name.toCharArray();
		
		for(int i=data.length-1;i>=0;i--){
			System.out.print(data[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