import java.io.*;

public class Main {
	public static void main(String[] args) throws IOException {
		String str = "",rts="";
		BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
		if((str=bf.readLine())==null)return;
		bf.close();
		for(int i=str.length()-1;i>=0;i--)rts+=str.charAt(i);
		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