import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] s1 = sc.next().toCharArray();
		int n = s1.length;
		char[] s2 = new char[n];
		for(int i=0;i<n;i++) {
			s2[i] = s1[n-1-i];
		}
		System.out.println(String.valueOf(s2));
	}

}
/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