import java.util.*;

class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);

	String str = sc.next();

	String rts = "";
	for(int i=str.length()-1; i>=0; i--){
	    String s = str.substring(i,i+1);
	    rts += s;
	}

	System.out.println(rts);
    }
}
/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