import java.io.*;

class Main{
public static void main(String[] args)
			throws java.io.IOException{
		reverse();

		// TODO 自動生成されたメソッド・スタブ
		
	}
	
	public static void reverse()throws IOException{
		BufferedReader input =
	            new BufferedReader (new InputStreamReader (System.in));
		String str = input.readLine();
		String[] strs =str.split("\\B"); //文字列を文字単位に分割
		String restr="";

		for(int i=(strs.length) - 1;i>=0;i--){
			restr+=strs[i]; //逆順に再結合
		}
		System.out.println( restr);

	}}
/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