import java.util.Scanner;

class Main {
	public static void main(String[] args){
		Scanner cin = new Scanner(System.in);
		
		String str = cin.next();
		reverse(str);
		
	}
	
	private static void reverse(String str){
		int len = str.length();
		for (int i = 0; i < len; i++){
			System.out.print(str.charAt(len - i - 1));
		}
		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