import java.util.*;
public class Main {

	public static void main(String[] args) {
		Scanner cin = new Scanner(System.in);
		String x;
		x=cin.next();
		for(int i=x.length();i>0;i--){
			char s=x.charAt(i-1);
			System.out.print(s);
		}
		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