import java.util.Scanner;


public class Main{
	public static void main(String[] args) {
		Scanner scan =new Scanner(System.in);
		String str =scan.nextLine();
		char[] s = new char[20];
		char[] t = new char[20];
		s=str.toCharArray();
		for(int i=0;i<s.length;i++){
			t[t.length-1-i]=s[i];
		}
		str=String.valueOf(t);
		System.out.println(str);
	}

}
/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