import java.util.Scanner;


public class Main {
	Scanner sc = new Scanner(System.in);
	
	void run(){
		char c[] = sc.next().toCharArray();
		int l = c.length;
		while(l-- != 0){
			System.out.print(c[l]);
		}
		System.out.println();
	}
	
	public static void main(String[] args) {
		new Main().run();
	}
}
/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