import java.util.*;
 
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String strstr = sc.next();
		char[] str = strstr.toCharArray();
		char[] rs = new char[str.length];
		for(int i=0;i<str.length;i++){
			rs[i] = str[str.length-i-1];
		}
		System.out.println(rs);
	}
}
/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