import java.util.Scanner;

public class Main {
	
	static Scanner sc =  new java.util.Scanner(System.in);

	public static void main(String[] args) {
		
		String str = sc.next();
		
		String[] array = str.split("");
		
		int n = array.length;
		
		String str2 = "" ;
		
		for ( int x = n - 1 ; x >= 0 ; x--){
			
			str2 = str2 + array[x] ;
		}
		System.out.println( str2 ) ;
	}

}
/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